中文
相关论文

相关论文: Andreev bound state spectroscopy of a quantum-dot-…

200 篇论文

We study three-terminal linear and nonlinear transport through an Aharonov-Bohm interferometer containing a double quantum dot using the nonequilibrium Green's function method. Under the condition that one of the three terminals is a…

介观与纳米尺度物理 · 物理学 2015-05-28 Toshihiro Kubo , Yuki Ichigo , Yasuhiro Tokura

We theoretically investigate the behavior of Andreev levels in a single-orbital interacting quantum dot in contact to superconducting leads, focusing on the effect of electrostatic gating and applied magnetic field, as relevant for recent…

强关联电子 · 物理学 2016-10-12 Nils Wentzell , Serge Florens , Tobias Meng , Volker Meden , Sabine Andergassen

A quantum Hall interferometer containing a grounded superconducting terminal is proposed. This geometry allows to control the Andreev and normal scattering amplitudes of sub-gap Bogoliubov quasiparticles with the Aharonov-Bohm phase, as…

介观与纳米尺度物理 · 物理学 2023-06-08 Vadim Khrapai

We present an exhaustive theoretical analysis of a double-loop Josephson proximity interferometer, as the one recently realized by Strambini et al. for the control of the Andreev spectrum via an external magnetic field. This system, called…

介观与纳米尺度物理 · 物理学 2017-08-28 F. Vischi , M. Carrega , E. Strambini , S. D'Ambrosio , F. S. Bergeret , Yu. V. Nazarov , F. Giazotto

We demonstrate delicate control over the Kondo effect and its interplay with quantum interference in an Aharonov-Bohm interferometer containing one Kondo dot and one noninteracting dot. It is shown that the Kondo resonance undergoes a…

强关联电子 · 物理学 2013-06-10 Tie-Feng Fang , Hong-Gang Luo

The first evidence of anomalous Josephson effect is reported in mesoscopic superconductor-normal metal-superconductor (SNS) junctions forming a crosslike Andreev Interferometer in the absence of magnetic and spin-orbit interactions normally…

超导电性 · 物理学 2023-06-02 D. Margineda , J. S. Claydon , F. Qejvanaj , C. Checkley

Mesoscopic Aharonov-Bohm interferometers have been used in attempts to measure the transmission phase of a quantum dot which is placed on one arm of the interferometer. Here we review theoretical results for the conductance through such…

介观与纳米尺度物理 · 物理学 2020-04-01 A. Aharony , O. Entin-Wohlman , Y. Imry

Aharonov-Bohm (AB) oscillations are studied for a parallel coupled vertical double quantum dot with a common source and drain electrode. We observe AB oscillations of current via a one-electron bonding state as the ground state and an…

介观与纳米尺度物理 · 物理学 2011-02-18 T. Hatano , T. Kubo , Y. Tokura , S. Amaha , S. Teraoka , S. Tarucha

We study the in-gap states of the quantum dot hybridized to a conducting and superconducting electrode. The usual proximity effect suppresses electronic states over the entire subgap regime $|\omega| < \Delta$, where $\Delta$ denotes the…

介观与纳米尺度物理 · 物理学 2013-10-14 J. Baranski , T. Domanski

In this article we review the state of the art on the transport properties of quantum dot systems connected to superconducting and normal electrodes. The review is mainly focused on the theoretical achievements although a summary of the…

介观与纳米尺度物理 · 物理学 2011-11-22 A. Martin-Rodero , A. Levy Yeyati

We theoretically examine the transport through an Aharonov-Bohm ring with an embedded quantum dot (QD), the so-called QD interferometer, to address two controversial issues regarding the shape of the Coulomb peaks and measurement of the…

介观与纳米尺度物理 · 物理学 2020-12-04 Mikio Eto , Rui Sakano

We report experiments on a quantum electron interferometer fabricated from high mobility, low density GaAs/AlGaAs heterostructure material. In this device, a nearly circular electron island is defined by four front gates deposited in etched…

介观与纳米尺度物理 · 物理学 2007-05-23 F. E. Camino , W. Zhou , V. J. Goldman

We realize a hybrid superconductor-semiconductor transmon device in which the Josephson effect is controlled by a gate-defined quantum dot in an InAs/Al nanowire. Microwave spectroscopy of the transmon's transition spectrum allows us to…

The physics of a system consisting of an Aharonov Bohm (AB) interferometer containing a single level interacting quantum dot (QD) on one of its arms, and attached to normal (N) and superconducting (S) leads is studied and elucidated. Here…

强关联电子 · 物理学 2009-11-10 Anatoly Golub , Yshai Avishai

Spectra and spin structures of Andreev interface states and the Josephson current are investigated theoretically in junctions between clean superconductors (SC) with ordered interlayers. The Josephson current through the…

超导电性 · 物理学 2009-11-11 Yuri Barash , I. V. Bobkova , Brian M. Andersen , T. Kopp , P. J. Hirschfeld

We study the fermionic boundary modes (Andreev bound states) in a time-reversal invariant one-dimensional superconductor. In the presence of a substrate, spatial inversion symmetry is broken and the electronic properties are strongly…

超导电性 · 物理学 2017-02-15 K. V. Samokhin

We investigate the possibility of an electromechanical which-path interferometer, in which electrons travelling through an Aharonov-Bohm ring incorporating a quantum dot in one of the arms are dephased by an interaction with the fundamental…

介观与纳米尺度物理 · 物理学 2009-11-07 A. D. Armour , M. P. Blencowe

We investigate theoretically the transport properties of a closed Aharonov-Bohm interferometer containing two quantum dots in the strong coupling regime. We find two distinct physical scenarios depending on the strength of the interdot…

介观与纳米尺度物理 · 物理学 2009-11-10 Rosa Lopez , David Sanchez , Minchul Lee , Mahn-Soo Choi , Pascal Simon , Karyn Le Hur

We study low-energy transport through a quantum dot coupled to one normal and two superconducting (SC) leads in a junction of Y-shape. In this geometry a crossover between Kondo dominated and Cooper-pairing dominated states occurs by tuning…

介观与纳米尺度物理 · 物理学 2015-06-11 Akira Oguri , Yoichi Tanaka , Johannes Bauer

Electronic transport through a quantum dot chain embodied in an Aharonov-Bohm interferometer is theoretically investigated. In such a system, it is found that only for the configurations with the same-numbered quantum dots side-coupled to…

介观与纳米尺度物理 · 物理学 2015-05-13 Yu Han , Weijiang Gong , Haina Wu , Guozhu Wei