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We investigate electron transport inside a ring system composed of a quantum dot (QD) coupled to two Majorana bound states confined at the ends of a one-dimensional topological superconductor nanowire. By tuning the magnetic flux threading…

介观与纳米尺度物理 · 物理学 2020-12-16 Qi-Bo Zeng , Shu Chen , L. You , Rong Lv

We explore theoretically the influence of Fano interference in the so-called Majorana oscillations in a T-shaped hybrid setup formed by a quantum dot (QD) placed between conducting leads and side-coupled to a topological superconducting…

介观与纳米尺度物理 · 物理学 2018-10-02 L. S. Ricco , V. L. Campo , I. A. Shelykh , A. C. Seridonio

We investigate transport properties through a crossbar-shaped structure formed by a quantum dot (QD) coupled to two normal leads and embedded between two one-dimensional topological superconductors (TSCs). Each TSC hosts Majorana bound…

介观与纳米尺度物理 · 物理学 2019-05-23 J. P. Ramos-Andrade , D. Zambrano , P. A. Orellana

We investigate the quantum transport in a hybrid ring system consisting of a quantum dot (QD) coupled to two Majorana bound states (MBSs) hosted in a topological superconducting nanowire, threaded by a magnetic flux. Utilizing the…

介观与纳米尺度物理 · 物理学 2025-10-10 Sirui Yu , Junrong Wang , Huajin Zhao , Hong Mao , Jinshuang Jin

In this work, we investigate the conductance and current correlations properties of a quantum topological inteferometer consisting of a QD coupled to two Majorana Bound States (MBSs) confined at both ends of a 1D topological superconductor…

介观与纳米尺度物理 · 物理学 2021-09-01 Ana M. Calle , Pedro A. Orellana , Jorge A. Otalora

We theoretically study quantum transport through a quantum dot coupled to Majorana bound states confined at the ends of a topological superconducting nanowire. The topological superconductor forms a loop and is threaded by a tunable…

介观与纳米尺度物理 · 物理学 2022-04-25 Levente Máthé , Doru Sticlet , Liviu P. Zârbo

We consider a quantum wire, containing two Majorana bound states (MBS) at its ends that are coupled to a current lead on one side and to a quantum dot (QD) on the other side. Using the method of full counting statistics we calculate the…

介观与纳米尺度物理 · 物理学 2017-08-16 Alexander Schuray , Luzie Weithofer , Patrik Recher

We consider a triple-quantum-dot (TQD) system composed by an interacting quantum dot connected to two effectively non-interacting dots, which in turn are both connected in parallel to metallic leads. As we show, this system can be mapped…

强关联电子 · 物理学 2016-12-21 Arturo Wong , Francisco Mireles

Electron transport through the T-shaped quantum-dot (QD) structure is theoretically investigated, by considering a Majorana zero mode coupled to the terminal QD. It is found that in the double-QD case, the presence of the Majorana zero mode…

介观与纳米尺度物理 · 物理学 2015-06-17 Wei-Jiang Gong , Shu-Feng Zhang , Zhi-Chao Li , Guangyu Yi , Yi-Song Zheng

Based on Keldysh non-equilibrium Green function method, we have investigated spin current production in a hybrid T-shaped device, consisting of a central quantum dot connected to the leads and a side dot which only couples to the central…

介观与纳米尺度物理 · 物理学 2018-03-14 I. L. Fernandes , G. G. Cabrera

We investigate the interaction between a topological insulator nanoparticle and a quantum dot in an impulse magnetic field. Since topological insulators are nonmagnetic, after the impulse has ended only the localised topological surface…

量子物理 · 物理学 2020-12-02 L. A. Castro-Enriquez , A. Martín-Ruiz

We consider the transport and the noise characteristics for the case of a T-shape double quantum dot system using the equation of motion method. Our theoretical results, obtained in an approximation equivalent to the Hartree-Fock…

介观与纳米尺度物理 · 物理学 2015-05-13 K. Brown , M. Crisan , I. Tifrea

We discuss the properties of topologically nontrivial superconducting phases and the conditions for their realization in condensed matter, and the principles for identifying Majorana bound states (MBSs). Along with the well-known Kitaev…

介观与纳米尺度物理 · 物理学 2022-05-23 V. V. Val'kov , M. S. Shustin , S. V. Aksenov , A. O. Zlotnikov , A. D. Fedoseev , V. A. Mitskan , M. Yu. Kagan

Based on calculations of the electronic structure of coupled multiple quantum dots, we study systemically the transport properties of the system driven by an ac electric field. We find qualitative difference between transport properties of…

介观与纳米尺度物理 · 物理学 2009-11-13 Wanyuan Xie , Hui Pan , Weidong Chu , Wei Zhang , Suqing Duan

We theoretically investigate electronic transport through a junction where a quantum dot (QD) is tunnel coupled on both sides to semiconductor nanowires with strong spin-orbit interaction and proximity-induced superconductivity. The results…

超导电性 · 物理学 2014-12-09 Guang-Yao Huang , Martin Leijnse , Karsten Flensberg , Hongqi Xu

We study two-terminal configurations in junctions between a topological superconducting wire with spin-orbit coupling and magnetic field, and an ordinary conductor with an embedded quantum dot. One of the signatures of the Majorana zero…

超导电性 · 物理学 2023-07-26 Leonel Gruñeiro , Miguel Alvarado , Alfredo Levy Yeyati , Liliana Arrachea

We analyze a quantum dot strongly coupled to the conducting leads via quantum point contacts - Fano regime of transport - and report a variety of resonant states which demonstrate the dominance of the interacting resonances in the…

介观与纳米尺度物理 · 物理学 2010-08-18 E. R. Racec , U. Wulf , P. N. Racec

The transmission of electrons through a non-interacting tight-binding chain with an interacting side quantum dot (QD) is analized. When the Kondo effect develops at the dot the conductance presents a wide minimum, reaching zero at the…

强关联电子 · 物理学 2009-11-07 M. E. Torio , K. Hallberg , A. H. Ceccatto , C. R. Proetto

Transient electron dynamics and the Fano resonance formation over time in transport through a two quantum dot system in a T-shape geometry (2QD-T) are analysed for free electrons. Time evolution of the transport characteristics are…

介观与纳米尺度物理 · 物理学 2021-11-01 Grzegorz Michałek , Bogdan R. Bułka

Electron transport through a strongly correlated quantum dot (QD) embedded in an Aharonov-Bohm (AB) ring is investigated with the aid of the finite-U slave-boson mean-field (SBMF) approach extended to nonequilibrium regime. A nonequilibrium…

介观与纳米尺度物理 · 物理学 2009-11-11 Junko Takahashi , Shuichi Tasaki
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