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We study the nonlocal magnetotransport through a strongly correlated quantum dot, connected to multiple terminals consisting of two normal and one superconducting (SC) leads. Specifically, we present a comprehensive view on the interplay…

Mesoscale and Nanoscale Physics · Physics 2026-03-11 Masashi Hashimoto , Yasuhiro Yamada , Yoichi Tanaka , Yoshimichi Teratani , Takuro Kemi , Norio Kawakami , Akira Oguri

Andreev reflection is a smart tool to investigate the spin polarisation P of the current through point contacts between a superconductor and a ferromagnet. We compare different models to extract P from experimental data and investigate the…

Mesoscale and Nanoscale Physics · Physics 2015-06-12 S. Bouvron , M. Stokmaier , M. Marz , G. Goll

Directional point-contact Andreev-reflection (PCAR) measurements in Ba(Fe1-xCox)2As2 single crystals (Tc=24.5 K) indicate the presence of two superconducting gaps with no line nodes on the Fermi surface. The PCAR spectra also feature…

We study crossed Andreev reflection (CAR) of electrons or holes in normal metal-superconductor-normal metal junctions and highlight some very strong effects of the underlying lattice. In particular, we demonstrate that for sharp interfaces…

Mesoscale and Nanoscale Physics · Physics 2013-06-17 François Crépin , Hans Hettmansperger , Patrik Recher , Björn Trauzettel

The pairing symmetry of the superconducting order parameter in iron-based superconductors has been a subject of debate, with various models proposing s-wave, d-wave, and mixed combinations as possible candidates. Here we probe the pairing…

Superconductivity · Physics 2024-04-23 Wonhee Ko , Sang Yong Song , Jiaqiang Yan , Jose L. Lado , Petro Maksymovych

The electric current and the magnetoresistance effect are studied in a double quantum-dot system, where one of the dots QDa is coupled to two ferromagnetic electrodes (F1,F2), while the second QDb is connected to a superconductor S. For…

Mesoscale and Nanoscale Physics · Physics 2012-06-05 E. C. Siqueira , G. G. Cabrera

A single mode electromagnetic resonator coupled to a two-level hybrid-quantum-dot(hQD) is studied theoretically as a laser(maser), when the hQD is driven out of equilibrium with external applied d.c. bias voltage. Using the formalism of the…

Mesoscale and Nanoscale Physics · Physics 2017-08-31 S. Mojtaba Tabatabaei , Farshad Ebrahimi

Mesoscopic systems possess shot noise in their currents due to the quantization of the conducting quasiparticles. Measurements of this shot noise are useful to study phenomena that do not manifest themselves in standard conductance or…

Mesoscale and Nanoscale Physics · Physics 2025-10-30 Austin Marga , Venkat Chandrasekhar

We theoretically investigate the subgapped transport phenomena through a normal-superconductor-normal (NSN) junction made up of ultra thin topological insulator with proximity induced superconductivity. The dimensional crossover from three…

Mesoscale and Nanoscale Physics · Physics 2017-10-18 SK Firoz Islam , Paramita Dutta , Arijit Saha

We theoretically study the crossed Andreev reflection in a hybrid nanostructure which comprises a d-wave superconductor and two normal-metal quantum wires. When the superconductor of the (110) oriented surface is in contact with the wires…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 S. Takahashi , T. Yamashita , S. Maekawa

We theoretically study the Andreev reflection (AR) in AA-stacked bilayer graphene/superconductor (AABG/SC) junction. AABG has a linear gapless energy band with two shifted Dirac cones and the electronic states are described by the cone…

Mesoscale and Nanoscale Physics · Physics 2025-09-08 Wei-Tao Lu , Qing-Feng Sun

We investigate conductances and current correlations in a system consisting of a normal multichannel conductor connected to one superconducting and two ferromagnetic electrodes. For antiparallel orientation of the ferromagnet polarizations,…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 David Sanchez , Rosa Lopez , Peter Samuelsson , Markus Buttiker

We propose a novel method for the generation of the transverse valley currents, which is based on the pure crossed Andreev reflection (pCAR) in the superconducting hybrid junctions composed of the gapped $\alpha-\mathcal{T}_3$ lattices with…

Superconductivity · Physics 2022-09-13 W. Zeng , R. Shen

The comment (arXiv:2505.23490) fails to identify any scientific errors and its central arguments actually support the main conclusions of our publication [Nat. Phys. 21, 708 (2025)]. Firstly, the whole argument of the comment to try to…

Mesoscale and Nanoscale Physics · Physics 2025-09-08 Junya Feng , Henry F. Legg , Mahasweta Bagchi , Daniel Loss , Jelena Klinovaja , Yoichi Ando

Coherent quantum transport in ferromagnet/superconductor/ferromagnet (FSF) double-barrier junctions is studied. Analytic expressions for charge and spin conductance spectra are derived for the general case of insulating interfaces (from…

Superconductivity · Physics 2009-11-11 Milos Bozovic , Zoran Radovic

Nonlocal currents, in devices where two normal metal terminals are contacted to a superconductor, are determined using the circuit theory of mesoscopic superconductivity. We calculate the conductance associated with crossed Andreev…

Mesoscale and Nanoscale Physics · Physics 2007-09-26 Jan Petter Morten , Arne Brataas , Wolfgang Belzig

Andreev reflection at the interface between a ferromagnet and a superconductor has become a foundation of a versatile new technique of measuring the spin polarization of magnetic materials. In this paper we will briefly outline a general…

Materials Science · Physics 2009-10-31 I. I. Mazin , A. A. Golubov , B. Nadgorny

We investigate the transport properties of a ferromagnet-superconductor interface within the framework of a modified three-dimensional Blonder-Tinkham-Klapwijk formalism. In particular, we propose that charge inhomogeneity forms via two…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 Ya-Fen Hsu , Tian-Wei Chiang , Guang-Yu Guo , Shang-Fan Lee , Jun-Jih Liang

A-type antiferromagnetism, with an in-plane ferromagnetic order and the interlayer antiferromagnetic coupling, owns inborn advantages for electrical manipulations but is naturally rare in real materials except in those artificial…

Materials Science · Physics 2023-04-18 Xinyu Yang , Ning Ding , Jun Chen , Ziwen Wang , Ming An , Shuai Dong

In this work, we theoretically study transverse magnetic focusing in a two-dimensional electron gas with strong Rashba spin-orbit interaction when proximitized along its edge with a superconducting contact. The presence of superconducting…

Mesoscale and Nanoscale Physics · Physics 2021-10-05 Lucila Peralta Gavensky , Gonzalo Usaj , C. A. Balseiro