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We study orbital entanglement production in a chaotic cavity connected to four single-channel normal-metal leads and one superconducting lead, assuming the presence of time-reversal symmetry (TRS). The scattered state of two incident…

介观与纳米尺度物理 · 物理学 2013-04-23 Sergio Rodríguez-Pérez , Marcel Novaes

Topological superconductors differ from topologically trivial ones for the presence of topologically protected zero-energy modes. To date, experimental evidence of topological superconductivity in nanostructures has been mainly obtained by…

介观与纳米尺度物理 · 物理学 2016-07-22 Pasquale Marra , Roberta Citro , Alessandro Braggio

The Josephson junction (JJ) is an essential element of superconducting (SC) devices for both fundamental and applied physics. The short-range coherent coupling of two adjacent JJs forms the Andreev molecule states (AMSs), which will provide…

A growing body of work suggests that planar Josephson junctions fabricated using superconducting hybrid materials provide a highly controllable route toward one-dimensional topological superconductivity. Among the experimental controls are…

We study systematically the scattering processes and the conductance spectra in nodal-line semimetalsuperconductor junctions using the extended Blonder-Tinkham-Klapwijk theory. The coexistence of peculiar quadruple reflections are found,…

超导电性 · 物理学 2020-03-11 Qiang Cheng , Zhe Hou , Qing-Feng Sun

We discuss some experimental signatures associated with the topological structures of unconventional superconductor order parameters of form $d_{x^2-y^2}+ix$, where $x=s,p_x \pm p_y$, or $d_{xy}$. Specifically, we study the topological…

超导电性 · 物理学 2009-11-10 T. K. Ng , C. M. Varma

Motivated by the orientation-dependent properties of d-wave superconductors (SCs), we investigate Andreev bound states (ABSs) and Josephson current in s-wave SC/altermagnet/d-wave SC (S/AM/D) and d-wave SC/altermagnet/d-wave SC (D/AM/D)…

超导电性 · 物理学 2025-07-03 Mohammad Alipourzadeh , Yaser Hajati

Planar Josephson junctions (JJs) have emerged as a promising platform for the realization of topological superconductivity and Majorana zero modes. To obtain robust quasi one-dimensional (1D) topological superconducting states using planar…

Tunneling spectroscopy at surfaces of unconventional superconductors has proven an invaluable tool for obtaining information about the pairing symmetry. It is known that mid gap Andreev bound states manifest itself as a zero bias…

超导电性 · 物理学 2015-09-09 Matthias Eschrig , Christian Iniotakis , Yukio Tanaka

We present a real-time diagrammatic theory for transport through interacting quantum dots tunnel coupled to normal and superconducting leads. Our formulation describes both the equilibrium and non-equilibrium superconducting proximity…

超导电性 · 物理学 2008-09-05 Michele Governale , Marco G. Pala , Jürgen König

We have generalized the scattering-matrix theory of multiple Andreev reflections in mesoscopic Josephson junctions to the multi-mode case, and applied it to short superconductor/normal metal/superconductor junctions with diffusive electron…

超导电性 · 物理学 2008-02-03 Athanassios Bardas , Dmitri V. Averin

We investigate nonlocal coherent transport in ballistic four-terminal Josephson structures (where bulk superconductors (terminals) are connected through a clean normal layer, e.g., a two-dimensional electron gas). Coherent anisotropic…

超导电性 · 物理学 2009-11-07 M. H. S. Amin , A. N. Omelyanchouk , A. M. Zagoskin

We theoretically analyze the Andreev bound states and their coupling to external radiation in superconductor-nanowire-superconductor Josephson junctions. We provide an effective Hamiltonian for the junction projected onto the Andreev level…

介观与纳米尺度物理 · 物理学 2017-09-18 Sunghun Park , A. Levy Yeyati

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 investigate the Josephson radiation emitted by a junction made of a quantum dot coupled to two conventional superconductors. Close to resonance, the particle-hole symmetric Andreev states that form in the junction are detached from the…

超导电性 · 物理学 2020-08-05 Baptiste Lamic , Julia S. Meyer , Manuel Houzet

It is shown that the low energy spectrum of mesoscopic superconductors coupled by Josephson interaction can be probed by two-electron tunneling from a normal electrode. The Andreev reflection in the NS junction of a…

凝聚态物理 · 物理学 2009-10-22 F. W. J. Hekking , L. I. Glazman , Gerd Schoen

We study Andreev reflection and Josephson currents in topological bilayer exciton condensates (TEC). These systems can create 100% spin entangled nonlocal currents with high amplitudes due to perfect nonlocal Andreev reflection. This…

介观与纳米尺度物理 · 物理学 2015-06-22 M. Veldhorst , M. Hoek , M. Snelder , H. Hilgenkamp , A. A. Golubov , A. Brinkman

Superconductor-topological insulator-superconductor Josephson junctions have been fabricated in order to study the width dependence of the critical current, normal state resistance and flux periodicity of the critical current modulation in…

超导电性 · 物理学 2015-06-22 C. G. Molenaar , D. P. Leusink , X. L. Wang , A. Brinkman

We propose a microscopic model of critical current noise in Josephson-junctions based on individual trapping-centers in the tunnel barrier hybridized with electrons in the superconducting leads. We calculate the noise exactly in the limit…

超导电性 · 物理学 2009-09-19 Rogerio de Sousa , K. Birgitta Whaley , Theresa Hecht , Jan von Delft , Frank K. Wilhelm

We theoretically study Josephson junctions with a transition metal dichalcogenide zigzag ribbon as a weak link. We demonstrate that the spatial profile of the supercurrent carried by the edge modes determines the critical current dependence…

介观与纳米尺度物理 · 物理学 2020-10-20 D. Sticlet , P. Wójcik , M. P. Nowak