ITP OpenIR  > 理论物理所2011年知识产出
Plasmon mass and Drude weight in strongly spin-orbit-coupled two-dimensional electron gases
Agarwal, A; Chesi, S; Jungwirth, T; Sinova, J; Vignale, G; Polini, M; Agarwal, A (reprint author), CNR, Ist Nanosci, NEST, I-56126 Pisa, Italy.
2011
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号83期号:11页码:115135
摘要Spin-orbit-coupled two-dimensional electron gases (2DEGs) are a textbook example of helical Fermi liquids, i.e., quantum liquids in which spin (or pseudospin) and momentum degrees of freedom at the Fermi surface have a well-defined correlation. Here we study the long-wavelength plasmon dispersion and the Drude weight of archetypical spin-orbit-coupled 2DEGs. We first show that these measurable quantities are sensitive to electron-electron interactions due to broken Galilean invariance and then discuss in detail why the popular random phase approximation is not capable of describing the collective dynamics of these systems even at very long wavelengths. This work is focused on presenting approximate microscopic calculations of these quantities based on the minimal theoretical scheme that captures the basic physics correctly, i.e., the time-dependent Hartree-Fock approximation. We find that interactions enhance the "plasmon mass" and suppress the Drude weight. Our findings can be tested by inelastic light scattering, electron energy loss, and far-infrared optical-absorption measurements.
部门归属[Agarwal, Amit; Polini, Marco] CNR, Ist Nanosci, NEST, I-56126 Pisa, Italy; [Agarwal, Amit; Polini, Marco] Scuola Normale Super Pisa, I-56126 Pisa, Italy; [Chesi, Stefano] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland; [Jungwirth, T.; Sinova, Jairo] Inst Phys ASCR, Vvi, Prague 16253 6, Czech Republic; [Jungwirth, T.] Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England; [Sinova, Jairo] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA; [Sinova, Jairo; Vignale, G.; Polini, Marco] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Vignale, G.] Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA
关键词Hgte Quantum-wells Single Dirac Cone Topological Insulators Spintronics Excitations Scattering Systems Surface
学科领域Physics
资助者European Community [215368]; Czech Republic [AV0Z10100521, KAN400100652, LC510]; NSF [DMR-0547875, DMR-0705460]; Preamium Academiae ; European Community [215368]; Czech Republic [AV0Z10100521, KAN400100652, LC510]; NSF [DMR-0547875, DMR-0705460]; Preamium Academiae ; European Community [215368]; Czech Republic [AV0Z10100521, KAN400100652, LC510]; NSF [DMR-0547875, DMR-0705460]; Preamium Academiae ; European Community [215368]; Czech Republic [AV0Z10100521, KAN400100652, LC510]; NSF [DMR-0547875, DMR-0705460]; Preamium Academiae
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收录类别SCI
语种英语
资助者European Community [215368]; Czech Republic [AV0Z10100521, KAN400100652, LC510]; NSF [DMR-0547875, DMR-0705460]; Preamium Academiae ; European Community [215368]; Czech Republic [AV0Z10100521, KAN400100652, LC510]; NSF [DMR-0547875, DMR-0705460]; Preamium Academiae ; European Community [215368]; Czech Republic [AV0Z10100521, KAN400100652, LC510]; NSF [DMR-0547875, DMR-0705460]; Preamium Academiae ; European Community [215368]; Czech Republic [AV0Z10100521, KAN400100652, LC510]; NSF [DMR-0547875, DMR-0705460]; Preamium Academiae
WOS记录号WOS:000288896400005
引用统计
被引频次:29[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14389
专题理论物理所2011年知识产出
通讯作者Agarwal, A (reprint author), CNR, Ist Nanosci, NEST, I-56126 Pisa, Italy.
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Agarwal, A,Chesi, S,Jungwirth, T,et al. Plasmon mass and Drude weight in strongly spin-orbit-coupled two-dimensional electron gases[J]. PHYSICAL REVIEW B,2011,83(11):115135.
APA Agarwal, A.,Chesi, S.,Jungwirth, T.,Sinova, J.,Vignale, G.,...&Agarwal, A .(2011).Plasmon mass and Drude weight in strongly spin-orbit-coupled two-dimensional electron gases.PHYSICAL REVIEW B,83(11),115135.
MLA Agarwal, A,et al."Plasmon mass and Drude weight in strongly spin-orbit-coupled two-dimensional electron gases".PHYSICAL REVIEW B 83.11(2011):115135.
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