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相关论文: A generalized proximity effect model in supercondu…

200 篇论文

The coupling of superconductivity to unconventional materials may lead to novel quantum states and potential applications. Controlling the quality of the superconductor-normal metal interface is of crucial importance to the understanding…

We show that the pairing resonance in the Pauli-limited normal state of ultra-thin superconducting Al films provides a spin-resolved probe of conduction electron polarization in thin magnetic films. A superconductor-insulator-ferromagnet…

超导电性 · 物理学 2009-08-17 Y. M. Xiong , P. W. Adams , G. Catelani

The present paper is an extension of 'cond-mat/0312673'. The construction of a hybrid discrete-continuous model of layered superconductors is presented. The model bases on the classic Lawrence-Doniach scenario with admitting, however,…

超导电性 · 物理学 2007-05-23 M. Sztyren

We study theoretically proximity-induced superconductivity and its inverse effect in dice lattice flat band model by considering Josephson junction with an s-wave pairing in the superconducting leads. Using self-consistent tight-binding…

介观与纳米尺度物理 · 物理学 2020-06-24 Somayeh Ahmadkhani , Mir Vahid Hosseini

We present a theoretical analysis of the proximity effect at a graphene-superconductor interface. We use a tight-binding model for the electronic states in this system which allows to describe the interface at the microscopic level. Two…

介观与纳米尺度物理 · 物理学 2009-11-13 P. Burset , A. L. Yeyati , A. Martín-Rodero

We study a superconducting single-charge transistor, where the coherence of Cooper pair tunneling is destroyed by the coupling to a tunable dissipative environment. Sequential tunneling and cotunneling processes are analyzed to construct…

介观与纳米尺度物理 · 物理学 2007-05-23 Frank K. Wilhelm , Gerd Schoen , Gergely T. Zimanyi

We propose a novel experiment to identify the symmetry of superconductivity on the basis of theoretical results for differential conductance of a normal metal connected to a superconductor. The proximity effect from the superconductor…

超导电性 · 物理学 2007-08-13 Yasuhiro Asano , Yukio Tanaka , Alexander A. Golubov , Satoshi Kashiwaya

The performance of many superconducting devices is degraded in presence of non-equilibrium quasiparticles in the superconducting part. One promising approach towards their evacuation is the use of normal-metal quasiparticle traps, where…

介观与纳米尺度物理 · 物理学 2020-05-15 R. P. Schmit , F. K. Wilhelm

We demonstrate Cooper-pair's drastic enhancement effect on band-to-band radiative recombination in a semiconductor. Electron Cooper pairs injected from a superconducting electrode into an active layer by the proximity effect recombine with…

其他凝聚态物理 · 物理学 2013-07-05 H. Sasakura , S. Kuramitsu , Y. Hayashi , K. Tanaka , T. Akazaki , E. Hanamura , R. Inoue , H. Takayanagi , Y. Asano , I. Suemune

Charging effects in mesoscopic junctions suppress the tunneling of electrons. In normal metal - superconductor systems they also suppress the proximity effect, thereby revealing the nature of the microscopic processes and of the ground…

凝聚态物理 · 物理学 2015-06-25 C. Bruder , Rosario Fazio , Gerd Schön

We propose a compact and highly-efficient scheme for complete Bell-state analysis using two-photon absorption in a superconducting proximity region of a semiconductor avalanche photodiode. One-photon transitions to the superconducting…

量子物理 · 物理学 2017-04-05 Evyatar Sabag , Shlomi Bouscher , Raja Marjieh , Alex Hayat

We theoretically explore the possibility of a superconducting proximity effect in single-walled metallic carbon nanotubes due to the presence of a superconducting substrate. An unconventional double-gap situation can arise in the two bands…

强关联电子 · 物理学 2009-11-13 Karyn Le Hur , Smitha Vishveshwara , Cristina Bena

On a basis of earlier substantiated expression for effective potential of electron-electron attraction in metals the assumption of an opportunity of formation of classically bound pairs is put forward. It was shown that in distinction from…

超导电性 · 物理学 2007-05-23 I. M. Yurin , V. B. Kalinin

Nonlinear I-V characteristics have been observed in insulating quench-condensed films which are locally superconducting. We suggest an interpretation in terms of the enhancement of conduction by the depinning of a Cooper pair charge density…

超导电性 · 物理学 2009-11-07 C. Christiansen , L. M. Hernandez , A. M. Goldman

We combine density functional theory and scanning tunneling microscopy to study the proximity effects between a bulk Ru(0001) superconductor and an atomically thin overlayer of Co. We have identified that the Co monolayer can grow in two…

Recent experimental advances in surface science have made it possible to track the evolution of superconductivity in films as the thickness enters the nanoscale region where it is expected that the substrate plays an important role. Here,…

超导电性 · 物理学 2016-01-15 Aurelio Romero-Bermúdez , Antonio M. García-García

Due to the value of the isotope shift in sulfur hydrides, a phonon-mediated pairing scenario of superconductivity is generally accepted for these high-temperature superconductors which is consistent with the Bardeen-Cooper-Schrieffer (BCS)…

超导电性 · 物理学 2018-12-11 R. M. Méndez-Moreno

In this work we introduce the possibility of unparticle mediated superconductivity. We discuss a theoretical scenario where it can emerge and show that a superconducting state is allowed by deriving and solving the gap equation for $s$-wave…

强关联电子 · 物理学 2015-03-31 James P. F. LeBlanc , Adolfo G. Grushin

The impact of the transport supercurrent on the density of states in the superconducting thin film with the weak link is investigated. At the weak link the order parameter is locally suppressed due to the order parameter phase difference.…

超导电性 · 物理学 2009-11-11 Sergey N. Shevchenko

Thin films of alkali metals when sandwiched at both surfaces by thin metal films loose their conductance. The superconducting proximity effect is used to investigate the change in the alkali film. On the length scale of the film thickness…

介观与纳米尺度物理 · 物理学 2009-11-10 Manjiang Zhang , Gerd Bergmann