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作者:

Yang, Kai-Hua (Yang, Kai-Hua.) | Qin, Chang-Dong (Qin, Chang-Dong.) | Wang, Huai Yu (Wang, Huai Yu.) | Liu, Kai -Di (Liu, Kai -Di.)

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摘要:

We investigate the joint effects of the intralead electron interaction and an external alternating gate voltage on the transport of a quantum dot coupled to two Luttinger liquid leads in the Kondo regime. We find the transferring between two Kondo physics mechanics by investigation of differential conductance. For very weak intralead interaction, the satellite and main Kondo resonant peaks appear in the differential conductance. For moderately strong intralead interaction, all the peaks disappear and evolve into dips, which signifies that a photon-assisted single-channel Rondo (1CK) physics turns into two-channel Rondo (2CK) physics. The 1CK and 2CK mechanisms can coexist within a region of the intralead interaction parameter. The 1CK physics transits to the 2CK one gradually, not suddenly. In the limit of strong interaction, all dips disappear. When the bias voltage is small, there is no photon exchange between the quantum dot and alternative field, and the differential conductance scales as a power law both in bias voltage and in temperature. As the field becomes stronger, the quantum dot will emit and absorb photons. (C) 2017 Elsevier B.V. All rights reserved.

关键词:

Luttinger liquid Quantum dot Kondo effect Ac field

作者机构:

  • [ 1 ] [Yang, Kai-Hua]Beijing Univ Technol, Coll Appl Sci, Beijing 100122, Peoples R China
  • [ 2 ] [Qin, Chang-Dong]Beijing Univ Technol, Coll Appl Sci, Beijing 100122, Peoples R China
  • [ 3 ] [Liu, Kai -Di]Beijing Univ Technol, Coll Appl Sci, Beijing 100122, Peoples R China
  • [ 4 ] [Wang, Huai Yu]Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

通讯作者信息:

  • [Yang, Kai-Hua]Beijing Univ Technol, Coll Appl Sci, Beijing 100122, Peoples R China

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来源 :

PHYSICS LETTERS A

ISSN: 0375-9601

年份: 2017

期: 15

卷: 381

页码: 1328-1334

2 . 6 0 0

JCR@2022

ESI学科: PHYSICS;

ESI高被引阀值:158

中科院分区:3

被引次数:

WoS核心集被引频次: 1

SCOPUS被引频次: 1

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