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We have performed low-temperature specific heat and thermal conductivity measurements of the Ni-based superconductor BaNi$_2$As$_2$ ($T_\mathrm{c}$ = 0.7 K) in magnetic field. In zero field, thermal conductivity shows $T$-linear behavior in…

Superconductivity · Physics 2015-05-13 N. Kurita , F. Ronning , Y. Tokiwa , E. D. Bauer , A. Subedi , D. J. Singh , J. D. Thompson , R. Movshovich

We study single electron transport across a single Bi dopant in a Silicon Nanotransistor to assess how the strong hyperfine coupling with the Bi nuclear spin $I=9/2$ affects the transport characteristics of the device. In the sequential…

Mesoscale and Nanoscale Physics · Physics 2013-08-19 F. Delgado , R. Aguado , J. Fernández-Rossier

We have calculated the temperature dependence of the conductance variation ($\delta S(T)$) of mesoscopic superconductor normal metal(S/N) structures, in the diffusive regime, analysing both weak and strong proximity effects. We show that in…

Superconductivity · Physics 2009-10-31 R. Seviour , C. J. Lambert , A. F. Volkov

We demonstrate that antiferromagnet-superconductor (AF-S) junctions show qualitatively different transport properties than normal metal-superconductor (N--S) and ferromagnet-superconductor (F-S) junctions. We attribute these transport…

Superconductivity · Physics 2020-11-30 Martin F. Jakobsen , Kristian B. Naess , Paramita Dutta , Arne Brataas , Alireza Qaiumzadeh

We study the magnetotransport in small hybrid junctions formed by high-mobility GaInAs/InP heterostructures coupled to superconducting (S) and normal metal (N) terminals. Highly transmissive superconducting contacts to a two-dimensional…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 I. E. Batov , Th. Schapers , N. M. Chtchelkatchev , H. Hardtdegen , A. V. Ustinov

Semiconducting diode with nonreciprocal transport effect underlies the cornerstone of contemporary integrated circuits (ICs) technology. Due to isotropic superconducting properties and the lack of breaking of inversion symmetry for…

We theoretically study the differential conductance of a one-dimensional normal-superconductor-normal-superconductor (N-SNS) junction with a phase bias applied between the two superconductors. We consider specifically a junction formed by a…

Mesoscale and Nanoscale Physics · Physics 2016-08-31 Esben Bork Hansen , Jeroen Danon , Karsten Flensberg

Transition-metal nitrides constitute a versatile class of materials with diverse properties and wide-ranging applications. Exploring new surface orientations and uncovering novel properties can enable innovative material configurations with…

Materials Science · Physics 2025-06-12 Duc V. Dinh , Esperanza Luna , Oliver Brandt

We discuss the quantum transport of electrons through a resonant tunnel junction coupled to a nanomechanical oscillator at zero temperature. By using the Green's function technique we calculate the transport properties of electrons through…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 M Tahir , A MacKinnon

Through the solid state reaction method, we synthesized a new BiSe2-based superconductor Sr0:5La0:5FBiSe2 with superconducting transition temperature Tc?3.8 K. A strong diamagnetic signal below Tc in susceptibility ?(T) is observed…

Superconductivity · Physics 2016-05-02 Lin Li , Yongliang Xiang , Yihong Chen , Wenhe Jiao , Chuhang Zhang , Li Zhang , Jianhui Dai , Yuke Li

Future of silicon-based microelectronics relies on solving the heat dissipation problem. A solution may lie in a nanoscale phenomenon known as ballistic heat conduction, which implies heat conduction without heating the conductor. But,…

Mesoscale and Nanoscale Physics · Physics 2018-09-27 Roman Anufriev , Sergei Gluchko , Sebastian Volz , Masahiro Nomura

Hybrid superconductor-semiconductor materials are fueling research in mesoscopic physics and quantum technology. Recently demonstrated smooth $\beta$-Sn superconductor shells, due to the increased induced gap, are expanding the available…

Superconductivity · Physics 2025-02-04 B. Zhang , Z. Li , H. Wu , M. Pendharkar , C. Dempsey , J. S. Lee , S. D. Harrington , C. J. Palmstrom , S. M. Frolov

We present research on the superconducting properties of Nb$_{x}$Re$_{1-x}$ ($x$ = 0.13-0.38) obtained by measuring the electrical resistivity $\rho(T)$, magnetic susceptibility $\chi(T)$, specific heat $C_P(T)$, and London penetration…

Superconductivity · Physics 2013-11-01 J. Chen , L. Jiao , J. L. Zhang , Y. Chen , L. Yang , M. Nicklas , F. Steglich , H. Q. Yuan

Symmetry plays a critical role in determining various properties of a material. Semiconducting p-n junction diode exemplifies the engineered skew electronic response and is at the heart of contemporary electronic circuits. The…

We examine the possibility of high temperature superconductivity from two-dimensional semiconductor without antiferromagnetic fluctuations. The weak coupling BCS theory is applied, especially where the Fermi level is near the bottom of the…

Superconductivity · Physics 2007-05-23 Mahito Kohmoto , Iksoo Chang , Jacques Friedel

We demonstrate a controllable p$-$n junction in a three$-$dimensional Dirac semimetal (DSM) Cd$_3$As$_2$ nanowire with two recessed bottom gates. The device exhibits four different conductance regimes with gate voltages, the unipolar (n$-$n…

Superconducting circuits are arguably taking a leading role in driving the ongoing quantum technological revolution. A detailed knowledge of the microscopic fluctuating electromagnetic properties plays an important role in advancing the…

Mesoscale and Nanoscale Physics · Physics 2026-02-23 Senlei Li , Shane P. Kelly , Jingcheng Zhou , Hanyi Lu , Yaroslav Tserkovnyak , Hailong Wang , Chunhui Rita Du

Superconducting triangular Nb wire networks with high normal-state resistance are fabricated by using a negative tone hydrogen silsesquioxane (HSQ) resist. Robust magnetoresistance oscillations are observed up to high magnetic fields and…

Mesoscale and Nanoscale Physics · Physics 2015-06-04 W. J. Zhang , S. K. He , H. Xiao , G. M. Xue , Z. C. Wen , X. F. Han , S. P. Zhao , C. Z. Gu , X. G. Qiu

We investigate a non-equilibrium aspect of the current-driven superconducting-normal phase transition in floating Al islands of epitaxial full-shell Al/InAs nanowires. Within a transition region discontinuous voltage jumps and hysteretic…

Mesoscale and Nanoscale Physics · Physics 2025-10-07 E. V. Shpagina , E. S. Tikhonov , D. Ruhstorfer , G. Koblmueller , V. S. Khrapai

We report bulk superconductivity (SC) in Eu$_{0.2}$Sr$_{0.8}$(Fe$_{0.86}$Co$_{0.14}$)$_{2}$As$_{2}$ single crystals by means of electrical resistivity, magnetic susceptibility, and specific heat measurements with $T$$_{\mathrm{c}}$ $\simeq$…

Superconductivity · Physics 2012-01-05 R. Sarkar , R. Nath , P. Khuntia , H. S. Jeevan , P. Gegenwart , M. Baenitz
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