Time-dependent local spin density approximation study of Luttinger liquids

被引：1

作者：

Lipparini, E. ^{[1
,2
]}

Zobele, G. ^{[3
]}

机构：

[1] Univ Trent, Dipartimento Fis, I-38050 Trento, Italy

[2] Ist Nazl Fis Nucl, Grp Collegato Trento, Trento, Italy

[3] Museo Tridentino Sienze Nat, I-38100 Trento, Italy

来源：

PHYSICAL REVIEW B | 2011年 / 84卷 / 07期

关键词：

DIMENSIONAL ELECTRON-GAS; QUANTUM POINT CONTACTS; CARBON NANOTUBES; QUANTIZED CONDUCTANCE; ELEMENTARY EXCITATIONS; EDGE EXCITATIONS; FERMION SYSTEM; HALL STATES; WIRES; TRANSPORT;

D O I：

10.1103/PhysRevB.84.075317

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We perform a time-dependent local spin density approximation (TDLSDA) study of one-dimensional Fermions with a contact interaction. We show that the simple TDLSDA approximation provides an exact description for density and spin density modes and conductance G in one-dimensional quantum wires, by establishing a general equivalence between TDSLDA and Tomonaga-Luttinger model for the elementary excitation spectra in one-dimensional Fermi systems. The role of interaction effects is carefully analyzed especially in relation to the problem of the universality of the result G = 2e(2)/h for the conductance of one-dimensional systems. Finally our results are in good agreement with the available experimental data on the one-dimensional plasmon dispersion, and conductance in GaAs quantum wires.

引用

页数：7

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