Magnetic field effects on the DOS of a Kondo quantum dot coupled to LL leads

被引：1

作者：

Yang, Kai-Hua ^{[1
]}

Qin, Chang-Dong ^{[1
]}

Wang, Huai-Yu ^{[2
]}

Wang, Xu ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Appl Sci, Beijing 100122, Peoples R China

[2] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2017年 / 250卷

基金：

中国国家自然科学基金;

关键词：

Luttinger liquid; Kondo regime; Density of states; Quantum dot; Magnetic field; LUTTINGER LIQUID LEADS; ANDERSON MODEL; CARBON NANOTUBES; TRANSPORT; EQUILIBRIUM; REGIME; STATES;

D O I：

10.1016/j.ssc.2016.11.017

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We investigate the joint effects of a magnetic field and electron-electron interaction on the tunneling density of states (DOS) of a quantum dot coupled to the Luttinger liquid leads in the Kondo regime. We find that for intralead electron interaction, the DOS develops two peaks deviated from the origin by the Zeeman energy. With the increase of the intralead interaction, a phase transition occurs. For moderately strong interaction, the Zeeman splitting peaks develop into two dips. The splitting of the Kondo peak and dip is not symmetric with respect to up and down spins. In the limit of strong interaction the Zeeman splitting behavior disappears and there appears a power-law scaling behavior.

引用

页码：57 / 63

页数：7

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