Fedor G. Pikus

Research Highlights:

• 66 publications and presentations
• Modeling of nanoscale semiconductor devices.
• Numerical study of metal-nonmetal transition and non-Fermi-liquid behavior in two-dimensional strongly interactiong many-electron systems.
• Study of new types of spin-paired states in quantum Hall effect.
• New quantum Monte-Carlo method for systems with strong particle-particle interaction.
• Theory of weak localization in semiconductor quanum wells with correct treatment of spin-orbit interaction and spin relaxation.
• Theory of interlayer tunneling in double-laer electron gas systems.
• Comprehensive theory of thermodynamics of two-dimensional electron gas in the regime of integer of fractional quantum Hall effect.
• Extensive contribution in the theory of Coulomb gap.
• Study of impurity scattering and correlated charge distributions in modulatetion-doped heterostructures.

Computer Experise:

• Development of new Monte-Carlo algorithms.
• Development of parallel algorithms.
• Programming for parallel supercomputers.
• Program optimization for vector supercomputers.
• Parallel programming for workstation clusters.
• Programming for heterogeneous parallel systems.
• Knowledge of many programming languages, software libraries, graphics libraries, message-passing systems for parallel programming, operation systems, and hardware platforms.
• Grants for supercomputer resources from San Diego Supercomputer Center - 1000 hours on C90, 55,000 hours on Paragon, 40,000 hours on T3D in 1995/96.

Device Applications:

• Theory of mobility enhancement in high electron mobility transistors (HEMTs).
• Modeling of charge interaction effects in quantum dot arrays - prospective for future switching and storage devices.
• Study of optical phenomena in doped quantum wells - potential lasers, light-emitting diodes, and photodetectors.

Education:

• Ph. D. in Physics: A. F. Ioffe Institute; St. Petersburg, Russia.
  Dissertation finished and submitted in June 1991, formal defense in April 1992.
  Title of the dissertation: "Many-body effects in two-dimensional systems".
• Doctorate work in physics at A. F. Ioffe Institute, Leningrad, Russia. March 1990 - September 1991.
• Diploma in Physics - Equivalent of M.S. (Honors): Leningrad PolyTechnical Institute, Leningrad, Russia. February 1990.
  Title: "Electron mobility in heterostructures with wide spacer layer".
• Student at Leningrad PolyTechnical Institute, Leningrad, Russia. September 1984 - February 1990.

Research Experience:

Department of Physics, State University of New York, Stony Brook, Ney York.
Research scientist, July 1996 - December 1997.

• Analysis of nano-scale semiconductor devices. Ref. [41].
• Continued research on weak localization in semiconductor structures. Ref. [42].

Department of Physics, University of California at Santa Barbara, Santa Barbara, California.
Postdoctoral research associate, September 1994 - July 1996.
Scientific adviser - Prof. W. Kohn.

• Studied the electron systems driven by strong time-dependent electric field. This research is in progress.
• Studied non-Fermi-liquid behavior of strongly interacting two-dimensional electron systems. In collaboration with A. Efros. This research is in progress. Ref. [31].
• Studied metal-insulator transition in strongly interacting electron systems. In collaboration with A. Efros. This research is in progress. Ref. [31].
• Investigated many-electron effects in self-assembling arrays of quantum dots. In collaboration with P. M. Petroff. Ref. [[38].
• Developed the theory of weak localization in quantum wells, which takes into account different mechanisms Dyakonov-Perel spin relaxation. We have shown that, unlike metal films, the magnetoresistance and the spin relaxation time are determined by different combinations of spin-orbit interaction coefficients. This is the first theory to achieve an agreement with experiment in a wide range of magnetic fields. In collaboration with G. E. Pikus Ref. [30]; In collaboration with G. E. Pikus. W. Knap, et. al. Ref. [32];
  This theory also applies to the weak localization in bulk wurtzite-type semiconductors (Ref. [37]);
  We have also applied this theory to (110) quantum wells, where the results are rather unusual: Ref. [39].
• Studied new type of quantum Hall states in low magnetic fields. In collaboration with A. Tikofsky. Ref. [36].

Department of Physics, University of Utah, Salt Lake City, UT.
Postdoctoral research associate, September 1991 - September 1994.
Scientific adviser - Prof. A. Efros.

• Investigated the thermodynamics of a two-dimensional electron gas in the regime of the quantum Hall effect (both fractional and integer). We have studied the electron density distribution in the regime of non-linear screening in a strong magnetic field and the transition to the linear screening regime. Our results for magnetocapacitance of the two-dimensional electron gas are in excellent agreement with the experiments by J. P. Eisenstein et.al. We have also explained the "apparent'' (background) density of states as one of the manifestations of non-linear screening. Refs. [13, 15, 17].
• Investigated magnetotransport through periodic lattices of dots and antidots. Ref. [19].
• Studied classical Coulomb gap in two-dimensional double-layer systems. Our result provide an explanation for the recently observed gap in the tunneling density of states of two-dimensional electron gas. We have calculated the current-voltage characteristics for the tunneling current between the wells. The current has a maximum at a certain voltage, which is of the order of the electron-electron interaction on the average distance. The results of our calculations for this peak voltage as a function of the magnetic field are in very good agreement with experiment. At zero bias, the tunneling conductivity is exponential in temperature. The activation energy of the conductivity is related to the same average electron-electron interaction energy, however it is numerically 10 times smaller. Our calculations give this small numerical coefficient within 30% of the experimental data without any fitting parameters. We have also investigated the dependencies of the activation energy and peak voltage on the distance between the well, and obtained the results in very good agreement with the experiment. Refs. [18, 27].
• Studied the Coulomb gap in two-dimensional systems with screening by metallic electrode. Our results provide an explanation for the recently observed gap in tunneling from a metallic gate into two-dimensional electron gas. We have shown that for strongly screening of the Coulomb interaction between electrons and moderate external disorder, there exist a new, unexpected type of the Coulomb gap. In this regime the density of states at the Fermi level is independent of the filling factor (which corresponds to the experimentally observed independence of the tunneling conductivity of the electron density at a given magnetic field). We have also found an unexpected universality, which connects the density of states at the Fermi level with the temperature, disorder, and screening length. Ref. [24].
• Studied the Coulomb gap in two-dimensional and three-dimensional systems. We have studied the Coulomb gap at small external disorder and established its nature, which is completely different from the one of the "classical" large-disorder Coulomb gap. We have also investigated the transition from the small-disorder regime to large disorder. We have found that density of states at the Fermi level approaches exponentially the solution of the self-consistent equation with increasing external disorder. We have also found that at some specific temperature the density of states at the Fermi level is independent on the magnitude of disorder. We have derived new equation for the density of states, which has a fixed point at this temperature. The entire investigation of this crossover was made possible by our advances in the techniques of Monte-Carlo simulation of large systems with long-range interaction. I have developed new, improved, Metropolis-type programs, which allowed us to do simulation for very large systems and in very wide range of temperatures. Ref. [25].
• Proposed a new model for the anomalous length dependence of the conductance of a wide channel of field-effect transistor, observed by A. B. Fowler et. al. In collaboration with M. Raikh. Ref. [21].
• Investigated the magnetic susceptibility of gapless semiconductors with magnetic impurities. In collaboration with G. E. Pikus and S. V. Iordanskii. Ref. [23].
• I have participated in the research of the exciton luminescence in the regime on the fractional quantum Hall effect. The primary tool of the study is numerical diagonalization of the many-body Hamiltonian (calculations were done in Haldane spherical geometry). I have developed new program, which allowed to do the calculations for systems as large as 8 electrons (which form an incompressible Laughlin liquid) and exciton (electron-hole pair; the hole wave function is not antisymmetric with electron ones, which increases the total size of the Hamiltonian). In collaboration with E. I. Rashba and V. M. Apalkov. Ref. [29].
• Studied the luminescence of the excitons in type II GaAs/AlAs superlattices in a magnetic field. The evolution of the exciton states with the magnetic field is calculated, and the re-entrance of the luminescence polarization at certain values of the magnetic field is predicted. Our results suggest a highly sensitive experimental method to determine the exciton g-factor in quantum wells, and to establish the nature of the additional exchange splitting, existing in these structures. In collaboration with G. E. Pikus. Refs. [16, 20, 22].
• Developed new quantum Monte-Carlo method to study quantum corrections in systems with strong interaction. Ref. [28].
• Developed new Monte-Carlo algorithms for study of strongly interacting many-body systems on parallel and distributed computers. Ref. [26].

A. F. Ioffe Institute, Leningrad, Russia.
Staff scientist, March 1990 - September 1991.

• Investigated electron density distribution in periodic lattices of dots and nd antidots. Ref. [12].
• Studied the non-linear current-voltage characteristics in the quantum Hall effect regime. Our results show that electrostatic properties of two-dimensional conductors and the strong dependence of the resistance on the filling factor lead to an exponential current-voltage characteristic. In collaboration with M. I. Dyakonov. Ref. [14].
• Investigated optical properties of the excitons in quantum wells, filled with two-dimensional electron gas. New criteria for variational calculations have been put forward and new variation function, which allows one to take into account the partial occupation of the momentum space more precisely, have been proposed. Ref. [9].
• Studied electronic and optical properties of silicon carbide polytypes. In collaboration with experimental group, a new model, explaining temperature dependence of exciton luminescence in SiC, have been presented. In collaboration with M. V. Dubrovskii. Ref. [2]. In collaboration with V. V. Evstropov, I. Yu. Lin'kov, and Ya. V. Morozenko. Ref. [10].
• Continued the studies of low-temperature mobility of two-dimensional electron gas in modulation-doped heterostructures and spatial correlations in impurity distribution. We have also considered effects of finite temperature on the impurity correlation and electron mobility. A model, explaining the mobility increase under constant illumination (observed by Kukushkin et. al) have been proposed. Refs. [6, 7, 8].
• Studied cyclotron resonance in near-surface layers of ultra-high-mobility bulk GaAs. In collaboration with V. V. Bel'kov. Ref. [11].

Leningrad PolyTechnical Institute, Leningrad, Russia.
Student, September 1984 - February 1990.

• Investigated the low-temperature mobility of a two-dimensional electron gas in modulation-doped heterostructures with a wide spacer layer. We have calculated scattering potential, created by remote impurities, taking into account spatial correlations of charged impurities. Electron mobility, limited by this scattering potential, have been calculated. Refs. [3, 4, 5].
• Studied electronic properties of silicon carbide polytypes. Calculated electron spectra of noncentrosymmetric romboedrical modifications of SiC. Ref. [2].
• Investigated shift photogalvanic effect in noncentrosymmetric superlattices and their electronic spectra. Ref. [1].

Computer skills:

Hardware:

IBM PC, Macintosh, IBM 360/370, IBM 3090, RISC workstations, Cray C90 and T3D, PDP-11, VAX, Intel Paragon, MEIKO.

Operational Systems:

MS DOS, IBM OS/2 for PC, Apple System 7, OS/360, VM with CMS, UNIX, Cray Unicos, RTS, VMS, Paragon OS.

Programming languages:

Proficient in FORTRAN, Pascal, C, PL/1, IBM 370 Assembler.

Parallel Programming:

MPI, PVM, NX.

Software Packages:

Mathematica, NCAR Graphics, DISSPLA Graphics, IMSL, NAG, Quadpack, Slatec, BLAS, Eispack, Lapack, LASO, Lanczos, ODRPack, ODEPack.

Areas of expertise:

Programming on vector supercomputers (Cray and IBM 3090), parallel programming under MPI, PVM (workstation clusters, Meiko, Paragon) and on Paragon native message-passing system, realization of Monte-Carlo methods on vector and parallel supercomputers and workstations, variational computations, numerical solution of integral and integro-differential equations, linear algebra.

Strong knowledge of numerical methods:

Monte-Carlo, molecular dynamics, optimization, integration/differentiation, differential, integral and integro-differential equations, interpolation, linear algebra etc.

Word Processing:

TeX and LaTex, Microsoft Word, Ami Pro, Describe.

System programming:

MS DOS and CMS.

Awards:

1991 - Award of the Division of Solid State Electronics of A.F. Ioffe Institute of Academy of Sciences of USSR for scientific research.

Membership:

Member of the American Physical Society since 1992.

Presentations:

1. "Long-range potential fluctuations in plane impurity layers", A. L. Efros and F. G. Pikus, 3rd Seminar on Physics of Low-Dimensional Systems, February 1989, Novosibirsk, Russia.
2. "Density of States of a Two-Dimensional Electron Gas in the Regime of Non-linear Screening", F. G. Pikus, A. L. Efros, and V. G. Burnett, APS March Meeting, March 1992, Indianapolis.
3. "Classical Approach to the Gap in the tunneling density of States of Two-Dimensional Electron Liquid in a Strong Magnetic Field", F. G. Pikus and A. L. Efros, APS March Meeting, March 1993, Seattle.
4. "Electrostatics of quantum liquids", A. L. Efros, F. G. Pikus, and V. G. Burnett, APS March Meeting, March 1993, Seattle (presented by A. L. Efros).
5. "Coulomb Gap in the Tunneling Density of States of Two-Dimensional Electron Liquid in a Strong Magnetic Field", A. L. Efros and F. G. Pikus, 5th International Conference on Hopping and Related Phenomena, August - September 1993, Glasgow, Scotland, U.K. (presented by A. L. Efros).
6. "Polarized Exciton Magnetoluminescence under Resonant Excitation of GaAs/AlAs Type II Superlattices", F. G. Pikus and G. E. Pikus, 3rd International Conference on Optics of Excitons in Confined Systems, August - September 1993, Montpellier, France.
7. "Study of the mechanism of the heavy- and light-hole mixing in GaAs/AlAs Superlattices by the exciton magnetoluminescence.", G. E. Pikus and F. G. Pikus, conference on Quantum Well and Superlattice Physics V, SPIE, 22-29 January 1994, Los Angeles, California.
8. "Parallel algorithm for Monte-Carlo simulation of Coulomb gap", F. G. Pikus, Mardi Gras '94 conference on "Toward Teraflop Computing and New Grand Challenge Applications", February 10-12, 1994, Baton Rouge, Louisiana.
9. "The Coulomb gap in tunneling from metal into two-dimensional electron gas", F. G. Pikus and A. L. Efros, APS March Meeting, March 1994, Pittsburgh.
10. "Coulomb Gap: The crossover from zero to strong disorder", A. L. Efros and F. G. Pikus, APS March Meeting, March 1994, Pittsburgh (presented by A. L. Efros).
11. "The mechanism of heavy and light hole mixing in GaAs/AlAs superlattices", F. G. Pikus and G. E. Pikus, APS March Meeting, March 1994, Pittsburgh.
12. "New Monte-Carlo method for strongly interacting systems", F. G. Pikus, Mardi Gras '95 conference on "Toward Teraflop Computing and New Grand Challenge Applications", February 19-23, 1995, Baton Rouge, Louisiana.
13. "Monte-Carlo method for systems of strongly interacting particles", F. G. Pikus, Mardi Gras '96 conference on "Experimental and Simulation Challenges in Nanostructured Materials ", February 15-17, 1996, Baton Rouge, Louisiana.
14. "New critical behavior in the Coulomb gap regime", A. L. Efros and F. G. Pikus, APS March Meeting, March 1995, San Jose (presented by A. L. Efros).
15. "New Monte-Carlo method for strongly interacting systems", F. G. Pikus and A. L. Efros, APS March Meeting, March 1995, San Jose.
16. "The mechanism of heavy and light hole mixing in GaAs/AlAs superlattices", G. E. Pikus and F. G. Pikus, Workshop on properties of surfaces and interfaces, Minneapolis, MN, May 1995 (invited).
17. "Conduction Band Spin Splitting and Negative Magnetoresistance in A₃B₅ Heterostructures", G. E. Pikus and F. G. Pikus, Conference on Electronic Properties of Two-Dimensional Systems, August 1995, UK. (Presented by G. E. Pikus)
18. "Localization in disordered 2D system of spinless fermions with strong Coulomb interaction", F. G. Pikus and A. L. Efros, APS March Meeting, March 1996, St. Louis.
19. "Weak Antilocalization and Spin Precession in Quantum Wells", F. G. Pikus and G. E. Pikus, APS March Meeting, March 1996, St. Louis.
20. "Mesoscopic Capacitance Fluctuations and Metal-Insulator Transition ", B. I. Shklovskii, A. Koulakov, and F. G. Pikus, APS March Meeting, March 1996, St. Louis. (Presented by B. I. Shklovskii)
21. "Quantum melting on a 2-d lattice and a delocalization transition ", A. L. Efros, E. V. Tsiper, and F. G. Pikus, APS March Meeting, March 1996, St. Louis. (Presented by A. L. Efros)
22. "Paired States in the Even Integer Quantum Hall Effect ", A. Tikofsky and F. G. Pikus, APS March Meeting, March 1996, St. Louis. (Presented by A. Tikofsky)
23. "Weak Antilocalization and Spin Precession in Quantum Wells", W. Knap, C. Skierbiszewski, A. Zduniak, E. Litwin-Staszewska, D.Bertho, F. Kobbi, J. L. Robert, G. E. Pikus, F. G. Pikus, Yu. B. Lyanda-Geller, S. V. Iordanskii, V. Mosser, and K. Zekentes, 23rd International Conference on the Physics of Semiconductors, Berlin, August 1996.
24. "Modeling of Nano-Scale Ballistic Field-Effect Transistors", F. G. Pikus and K. K. Likharev, International Workshop on Computational Electronics (IWCE-5), Notre Dame, IN, May 1997.

Publications:

If the title of the paper looks like this, the abstract is available by clicking on the title. Preprints of some of the papers in PostScript format can be accessed from the abstract pages. Some of the links actually lead to the LANL E-print Archive.

1. "Shift photogalvanic effect in semiconductors with superlattice without inversion center", F.G. Pikus, Sov. Phys. Semiconductors 22 (1988), 594 - 594.
2. "Electronic spectra of romboedrical modifications of silicon", G.B. Dubrovskii, F.G. Pikus, Sov. Phys. Solid State 31, (1989), 1012.
3. "Large scale potential fluctuations in plane layers with impurities", F.G. Pikus, A.L. Efros, Sov. Phys. JETP 96 (1989), 558 - 563.
4. "Maximum low-temperature mobility of two-dimensional electrons in heterostructures with thick spacer layer", A.L. Efros, F.G. Pikus, G.G. Samsonidze, Phys. Rev. B 41 (1990), 8295 - 8301.
5. "Maximum low-temperature mobility of two-dimensional electrons in heterostructures with thick spacer layer", F.G. Pikus, G.G. Samsonidze, A.L. Efros, Sov. Phys. Solid State 32 (1990), 703 - 707.
6. "Increase in the low-temperature mobility of 2D electrons by constant exposure to light", F.G. Pikus, JETP Letters 52 (1990), 555 - 558.
7. "Maximum low-temperature mobility in a 2-dimensional electron-gas in heterostructures with a thick spacer layer. Computer modeling", F.G. Pikus, Sov. Phys. Semiconductors 25 (1991), 439 - 442.
8. "Temperature dependence of the mobility in a two-dimensional electron gas limited by impurity scattering in a heterostructures with a wide spacer layer. Computer simulation", F.G. Pikus, G.V. Golant, Sov. Phys. Semiconductors 26 (1992), 3437.
9. "Excitons in quantum wells with a two-dimensional electron gas", F.G. Pikus, Sov. Phys. Semiconductors 26 (1992), 2633.
10. "Photoluminescence of compensated SiC-6H", V.V. Evstropov, I.Yu. Lin'kov, Ya.V. Morozenko, F.G. Pikus, Sov. Phys. Semiconductors 26 (1992), 543 - 547.
11. "Spectral variations of the mobility of photoexcited carriers in pure GaAs", V.V. Belkov, F.G. Pikus. JETP Letters 54 (1992), 458 - 461.
12. "Effective size of scattering centers in a two-dimensional electron gas", T. Deruelle, K. Ensslin, P.M. Petroff, A.L. Efros, F.G. Pikus, Phys. Rev. B 45 (1992), 9082 - 9090.
13. "Thermodynamic density of states of two-dimensional electron gas in a strong magnetic field", A.L. Efros, F.G. Pikus, V.G. Burnett, Solid State Commun. 84 (1992), 9194.
14. "Numerical calculations of the current-voltage dependence in the quantum Hall effect regime", M.I. Dyakonov, F.G. Pikus, Solid State Commun. 83 (1992), 413 - 416.
15. "Density of states of a 2D electron gas in a long-range random potential", A.L. Efros, F.G. Pikus, V.G. Burnett, Phys. Rev. B 47 (1993), 2233 - 2243.
16. "Polarized Luminescence of the Excitons under Resonance Excitation of GaAs/AlAs Type II Superlattices in a Normal Magnetic Field", G.E. Pikus, F.G. Pikus, Journal of Luminescence 54 (1993), 279 - 284.
17. "Distribution of electron density and magnetocapacitance in the regime of fractional quantum Hall effect", F.G. Pikus, A.L. Efros, Phys. Rev. B 47 (1993), 16395 - 16403.
18. "Classical approach to the gap in the tunneling density of states of two-dimensional electron liquid in a strong magnetic field", A.L. Efros, F.G. Pikus, Phys. Rev. B, 48 (1993), 14694.
19. "Magnetotransport through antidot and dot lattices in two-dimensional structure", V.G. Burnett, A.L. Efros, F.G. Pikus, Phys. Rev. B, 48 (1993), 14365.
20. "Polarized exciton magnetoluminescence under resonance excitation of GaAs/AlAs type II superlattices", G. E. Pikus and F. G. Pikus, J. de Physique IV, 5 (1993), 187
21. "Anomalous length dependence of the conductance of a 2D channel near the threshold", M.E. Raikh, F.G. Pikus, Modern Physics Letters B, 8 (1994), 445.
22. "The mechanism of heavy and light hole mixing in GaAs/AlAs superlattices", G. E. Pikus and F. G. Pikus, Solid State Communications, 89 (1994), 319.
23. "Indirect exchange interaction for zero-gap semiconductors in Kane model", S. V. Iordanskii, F. G. Pikus, and G. E. Pikus, J. Appl. Phys., 76 (1994), 424.
24. "Coulomb Gap in a Two-Dimensional Electron Gas with a Close Metallic Electrode", F. G. Pikus and A. L. Efros, Phys. Rev. B., 51 (1995), 16871.
25. "Critical behavior of density of states in disordered system with localized electrons", F. G. Pikus and A. L. Efros, Phys. Rev. Lett., 73 (1994), 3014.
26. "Simulation of the Coulomb gap on a parallel computer", F. G. Pikus, Newsletter of Utah Supercomputer Institute, 5 (1994), 1.
27. "Coulomb Gap in the Tunneling Density of States of Two-Dimensional Electron Liquid in a Strong Magnetic Field", A. L. Efros and F. G. Pikus, Int. J. Mod. Phys. B, 8 (1994), 913.
28. "New Quantum Monte-Carlo Method for Strongly Correlated Systems. Quantum Melting", F. G. Pikus and A. L. Efros, Solid State Commun., 92 (1994), 485.
29. "Theory of exciton spectra of incompressible quantum liquids", V.M. Apalkov, E.I. Rashba, and F. G. Pikus, Phys. Rev. B., 52 (1995), 6111.
30. "Conduction band spin splitting and negative magnetoresistance in A3B5 heterostructures", F. G. Pikus and G. E. Pikus, Phys. Rev. B., 51 (1995), 16928.
31. "Non-Fermi-Liquid Behavior in Two-Dimensional Electron Gas with Disorder", A. L. Efros and F. G. Pikus, Solid State Commun., 96 (1995), 183.
32. "Weak Antilocalization and Spin Precession in Quantum Wells", W. Knap, C. Skierbiszewski, A. Zduniak, E. Litwin-Staszewska, D.Bertho, F. Kobbi, J. L. Robert, G. E. Pikus, F. G. Pikus, Yu. B. Lyanda-Geller, S. V. Iordanskii, V. Mosser, and K. Zekentes, Phys. Rev. B. 53 , 3912 (1996.
33. "Conduction Band Spin Splitting and Negative Magnetoresistance in A₃B₅ Heterostructures", G. E. Pikus and F. G. Pikus, Accepted to Semiconductors Science and Technology.
34. "Quantum Melting on a Lattice and a Delocalization Transition", E. V. Tsiper, F. G. Pikus, and A. L. Efros, Submitted to Phys. Rev. Lett.
35. "Exciton luminescence of compensated SiC-6H ", V.V. Evstropov, I.Yu. Linkov, Ya.V. Morozenko, and F. G. Pikus, Physica B, 185 (1993), 313.
36. "Properties of Paired Quantum Hall States at \nu=2", F. G. Pikus and A. M. Tikofsky, submitted to PRL.
37. "Weak Localization and Negative Magnetoresistance in Wurtzite-type Crystals", F. G. Pikus and G. E. Pikus, Solid State Commun., 100 (1996), 95.
38. "Single-Electron Charging and Coulomb Interaction in InAs Self-Assembled Quantum Dot Arrays", G. Medeiros-Ribeiro, F. G. Pikus, P. M. Petroff, and A. L. Efros, Phys. Rev. B. 100 (1997), 1568.
39. "Spin Splitting and Weak Localization in (110) GaAs/AlGaAs Quantum Wells ", T. Hassenkam, S. Pedersen, K. Baklanov, A. Kristensen, C. B. Sorensen, P. E. Lindelof, F. G. Pikus, and G. E. Pikus, Phys. Rev. B. 55 (1997), 9298.
40. "Statistics of the charging spectrum of a two-dimensional Coulomb-glass island", A. A. Koulakov, F. G. Pikus, and B.I. Shklovskii, Phys. Rev. B. 55 (1997), 9233.
41. "Nanoscale Field-Effect Transistors: An Ultimate Size Analysis", F. G. Pikus and K. K. Likharev, accepted to Applied Physics Letters.
42. " Weak Localization in Semiconductor Multi-Quantum Well Structures ", F. G. Pikus and G. E. Pikus, submitted to Phys. Rev. B.

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