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Title: Spin-orbit interactions in inversion-asymmetric two-dimensional hole systems: A variational analysis

Authors:
; ; ;
Publication Date:
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1343466
Grant/Contract Number:
AC02-06CH11357
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 95; Journal Issue: 7; Related Information: CHORUS Timestamp: 2017-02-10 22:08:36; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Marcellina, E., Hamilton, A. R., Winkler, R., and Culcer, Dimitrie. Spin-orbit interactions in inversion-asymmetric two-dimensional hole systems: A variational analysis. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.95.075305.
Marcellina, E., Hamilton, A. R., Winkler, R., & Culcer, Dimitrie. Spin-orbit interactions in inversion-asymmetric two-dimensional hole systems: A variational analysis. United States. doi:10.1103/PhysRevB.95.075305.
Marcellina, E., Hamilton, A. R., Winkler, R., and Culcer, Dimitrie. Fri . "Spin-orbit interactions in inversion-asymmetric two-dimensional hole systems: A variational analysis". United States. doi:10.1103/PhysRevB.95.075305.
@article{osti_1343466,
title = {Spin-orbit interactions in inversion-asymmetric two-dimensional hole systems: A variational analysis},
author = {Marcellina, E. and Hamilton, A. R. and Winkler, R. and Culcer, Dimitrie},
abstractNote = {},
doi = {10.1103/PhysRevB.95.075305},
journal = {Physical Review B},
number = 7,
volume = 95,
place = {United States},
year = {Fri Feb 10 00:00:00 EST 2017},
month = {Fri Feb 10 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevB.95.075305

Citation Metrics:
Cited by: 4works
Citation information provided by
Web of Science

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  • We present a detailed theoretical study on zero-frequency Drude weight and optical conductivity of a two-dimensional heavy-hole gas (2DHG) with k-cubic Rashba and Dresselhaus spin-orbit interactions. The presence of k-cubic spin-orbit couplings strongly modifies the Drude weight in comparison to the electron gas with k-linear spin-orbit couplings. For large hole density and strong k-cubic spin-orbit couplings, the density dependence of Drude weight deviates from the linear behavior. We establish a relation between optical conductivity and the Berry connection. Unlike two-dimensional electron gas with k-linear spin-orbit couplings, we explicitly show that the optical conductivity does not vanish even for equal strengthmore » of the two spin-orbit couplings. We attribute this fact to the non-zero Berry phase for equal strength of k-cubic spin-orbit couplings. The least photon energy needed to set in the optical transition in hole gas is one order of magnitude smaller than that of electron gas. Types of two van Hove singularities appear in the optical spectrum are also discussed.« less
  • The effect of spin splitting caused by structural asymmetry (Rashba's contribution) and bulk asymmetry (Dresselhaus's contribution) on the magnetoconductance of two-dimensional structures with high mobility of charge carriers is studied. The theory of weak localization with regard to both of the contributions is developed. The theory is valid in the entire region of classically low magnetic fields for arbitrary relations between the frequencies of spin precession and elastic collisions. The suppression of the correction for antilocalization is demonstrated in the case of equal contributions of structural anisotropy and bulk anisotropy to the spin splitting. The effect of the contribution, cubicmore » in the wave vector, to the spin splitting on the quantum magnetoresistance is studied.« less
  • We analyze the spin-orbit terms in multi-subband quasi-two-dimensional electron systems, and how they descend from the bulk Hamiltonian of the conduction band. Measurements of spin-orbit terms in one subband alone are shown to give incomplete information on the spin-orbit Hamiltonian of the system. They should be complemented by measurements of inter-subband spin-orbit matrix elements. Tuning electron energy levels with a quantizing magnetic field is proposed as an experimental approach to this problem.
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