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相关论文: Fano-Andreev effect in T-shape double-quantum-dot …

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In this paper, we investigate the transport through a T-shaped double quantum dot coupled to two normal metal leads left and right and a superconducting lead. Analytical expressions of Andreev transmission and local Density of States of the…

介观与纳米尺度物理 · 物理学 2015-06-15 A. M. Calle , M. Pacheco , P. A. Orellana

We studied the effects of superconducting quantum correlations in a system consisting of two quantum dots, two normal leads, and a superconductor. Using the non-equilibrium Green's functions method, we analyzed the transmission, density of…

介观与纳米尺度物理 · 物理学 2023-11-29 A. González I. , A. M. Calle , M. Pacheco , E. C. Siqueira , Pedro A. Orellana

Correlation effects on electron transport through a system of T-shaped double-dots are investigated, for which only one of the dots is directly connected to the leads. We evaluate the local density of states and the conductance by means of…

介观与纳米尺度物理 · 物理学 2009-11-07 Yusuke Takazawa , Yoshiki Imai , Norio Kawakami

We investigate theoretically the Andreev transport through a quantum dot strongly coupled with a normal metal/ferromagnet and a superconductor (N/F-QD-S), in which the interplay between the Kondo resonance and the Andreev bound states…

强关联电子 · 物理学 2015-12-09 Lin Li , Zhan Cao , Hong-Gang Luo , Fu-Chun Zhang , Wei-Qiang Chen

We analyze the quantum interference effects appearing in the charge current through the double quantum dots coupled in T-shape configuration to an isotropic superconductor and metallic lead. Owing to proximity effect the quantum dots…

强关联电子 · 物理学 2011-11-09 J. Baranski , T. Domanski

We study the transport through side-coupled double quantum dots, connected to normal and superconducting (SC) leads with a T-shape configuration. We find, using the numerical renormalization group, that the Coulomb interaction suppresses SC…

介观与纳米尺度物理 · 物理学 2009-11-13 Yoichi Tanaka , Norio Kawakami , Akira Oguri

We examine the influence of the superconducting proximity effect on the transport properties of a T-shaped double quantum dot strongly coupled to two normal, nonmagnetic or ferromagnetic leads. We show that the two-stage Kondo screening may…

介观与纳米尺度物理 · 物理学 2018-07-02 Krzysztof P. Wójcik , Ireneusz Weymann

We systematically investigate electron transport through double quantum dots with particular emphasis on interference induced via multiple paths of electron propagation. By means of the slave-boson mean-field approximation, we calculate the…

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

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

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

We study Andreev transport through double quantum dots connected in series normal and superconducting (SC) leads, using the numerical renormalization group. The ground state of this system shows a crossover between a local Cooper-pairing…

介观与纳米尺度物理 · 物理学 2015-05-14 Yoichi Tanaka , Norio Kawakami , Akira Oguri

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

We analyze the transport properties of a double quantum dot device with both dots coupled to perfect conducting leads and to a finite chain of N non-interacting sites connecting both of them. The inter-dot chain strongly influences the…

介观与纳米尺度物理 · 物理学 2013-08-08 L. Costa Ribeiro , I. J. Hamad , G. Chiappe , E. V. Anda

We report transport measurements of gate-tunable Andreev bound states in a carbon nanotube quantum dot coupled to two superconducting leads. In particular, we observe clear features of two types of Kondo ridges, which can be understood in…

介观与纳米尺度物理 · 物理学 2013-02-26 Bum-Kyu Kim , Ye-Hwan Ahn , Ju-Jin Kim , Mahn-Soo Choi , Myung-Ho Bae , Kicheon Kang , Jong Soo Lim , Rosa Lopez , Nam Kim

We investigate the Fano-type spectroscopic lineshapes of the T-shape double quantum dot coupled between the conducting and superconducting electrodes and analyze their stability on a decoherence. Because of the proximity effect the quantum…

介观与纳米尺度物理 · 物理学 2012-06-01 J. Baranski , T. Domanski

Electronic transport through a quantum dot strongly coupled to electrodes is studied within a model with two conduction channels. It is shown that multiple scattering and interference of transmitted waves through both channels lead to Fano…

介观与纳米尺度物理 · 物理学 2009-11-07 Bogdan R. Bulka , Piotr Stefanski

Electron transport through parallel double quantum dot system with interdot tunneling and strong on-site Coulomb interaction is studied in the Kondo regime by using the finite-$U$ slave boson technique. For a system of quantum dots with…

介观与纳米尺度物理 · 物理学 2009-11-10 Guo-Hui Ding , C. K. Kim , K. Nahm

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

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 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
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