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We study the quantum transport behavior of a normal-superconductor-normal junction based on type-II Weyl semimetal, which is arranged in the tilting direction of the Weyl semimetal. We find that both the crossed Andreev reflection and…

介观与纳米尺度物理 · 物理学 2018-11-14 Xue-Si Li , Shu-Feng Zhang , Xue-Rui Sun , Wei-Jiang Gong

We study the sub-gap spectrum and the transport properties of a double quantum dot coupled to metallic and superconducting leads. The coupling of both quantum dots to the superconducting lead induces a non-local pairing in both quantum dots…

介观与纳米尺度物理 · 物理学 2020-10-28 G. Górski , K. Kucab

We investigate transport in a superconducting nanostructure housing a Weyl point in the spectrum of Andreev bound states. A minimum magnet state is realized in the vicinity of the point. One or more normal-metal leads are tunnel-coupled to…

介观与纳米尺度物理 · 物理学 2021-05-05 Yuguang Chen , Yuli Nazarov

We theoretically study low energy electric transport in a junction consisting of a Weyl semimetal and a metallic superconductor. The characteristic features of the differential conductance depend on the relative directions between the…

超导电性 · 物理学 2014-07-10 Shuhei Uchida , Tetsuro Habe , Yasuhiro Asano

We propose a universal method to detect the specular Andreev reflection taking the simple two dimensional Weyl nodal-line semimetal-superconductor double-junction structure as an example. The quasiclassical quantization conditions are…

超导电性 · 物理学 2021-04-27 Qiang Cheng , Qing-Feng Sun

We review recent work on resonant Andreev tunneling through a strongly interacting quantum dot connected to a normal and to a superconducting lead. We derive a general expression for the current flowing in the structure and discuss the…

介观与纳米尺度物理 · 物理学 2009-10-31 R. Raimondi , P. Schwab

We have studied the Waiting Time Distributions (WTDs) for sub-gap transport through a single-level quantum dot tunnel coupled to one normal and one superconducting lead. The WTDs reveal the internal dynamics of the system in particular the…

介观与纳米尺度物理 · 物理学 2013-08-23 Leila Rajabi , Christina Pöltl , Michele Governale

We study the transport properties of junctions of normal and superconducting Weyl semi-metal with tilted dispersion, in the presence of magnetization induced by magnetic strips. The sub gap tunnelling conductance shows robust signatures in…

介观与纳米尺度物理 · 物理学 2020-08-12 M. Maiti , J. Smotlacha

We study resonant Andreev tunneling through a strongly interacting quantum dot connected to a normal and to a superconducting lead. We obtain a formula for the Andreev current and apply it to discuss the linear and non-linear transport in…

介观与纳米尺度物理 · 物理学 2009-10-30 Rosario Fazio , Roberto Raimondi

We study the nonequilibrium transport through a quantum dot coupled to normal and superconducting leads. We use the modified second-order perturbation theory to calculate the differential conductance and the local density of states at the…

介观与纳米尺度物理 · 物理学 2010-03-26 Yasuhiro Yamada , Yoichi Tanaka , Norio Kawakami

We explore the thermoelectric transport properties of a coexistence topological semimetal, characterized by the presence of both a pair of Weyl points and a nodal ring in the quantum limit. This system gives rise to complex Landau bands…

介观与纳米尺度物理 · 物理学 2024-03-12 L. W. Guo , C. M. Wang

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

Using the modified perturbation theory, we theoretically study the nonequilibrium Andreev transport through a quantum dot coupled to normal and superconducting leads (N-QD-S), which is strongly influenced by the Kondo and superconducting…

介观与纳米尺度物理 · 物理学 2015-03-18 Yasuhiro Yamada , Yoichi Tanaka , Norio Kawakami

Klein tunneling is an old topic in relativistic quantum physics, and has been observed recently in graphene where massless particles reside. Here, we propose a new heterostructure platform for Klein tunneling to occur, which consists of a…

介观与纳米尺度物理 · 物理学 2024-04-26 Jiajia Huang , Luyang Wang , Dao-Xin Yao

We investigate transport properties of a superconducting junction of many ($N \ge 2$) one-dimensional quantum wires. We include the effectofelectron-electron interaction within the one-dimensional quantum wire using a weak interaction…

介观与纳米尺度物理 · 物理学 2008-04-15 Sourin Das , Sumathi Rao , Arijit Saha

Weyl semimetal is a recently discovered state of quantum matter, which generally possesses tilted energy dispersion. Here, we investigate the electron tunneling through a Weyl semimetal p-n-p junction. The angular dependence of electron…

介观与纳米尺度物理 · 物理学 2017-08-23 Can Yesilyurt , Seng Ghee Tan , Gengchiau Liang , Shengyuan A. Yang , Mansoor B. A. Jalil

We propose a phenomenological description of electronic transport through a normal metal/superconductor interface of arbitrary transparency, which accounts for the presence of electron-electron interaction in the normal metal. The effect of…

超导电性 · 物理学 2007-05-23 H. T. Man , T. M. Klapwijk , A. F. Morpurgo

We study transport through double quantum dots coupled to normal and superconducting leads, where the Andreev reflection plays a key role in determining characteristic transport properties. We shall discuss two typical cases, i.e. double…

介观与纳米尺度物理 · 物理学 2007-05-23 Yoichi Tanaka , Norio Kawakami

We investigate the conductance through and the spectrum of ballistic chaotic quantum dots attached to two s-wave superconductors, as a function of the phase difference $\phi$ between the two order parameters. A combination of analytical…

介观与纳米尺度物理 · 物理学 2009-11-13 M. C. Goorden , Ph. Jacquod , J. Weiss

We study the transport properties of a quantum dot coupled to a normal and a superconducting lead. The dot is represented by a generalized Anderson model. Correlation effects are taken into account by an appropriate self-energy which…

强关联电子 · 物理学 2009-10-31 J. C. Cuevas , A. Levy Yeyati , A. Martin-Rodero
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