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We have studied the variation of Tc with charge density and lattice parameters in Mg1-xAlxB2 superconducting samples at low Al doping x<8%. We show that high Tc occurs where the chemical potential is tuned at a "superconducting shape…

超导电性 · 物理学 2011-02-01 A. Bianconi , D. Di Castro , S. Agrestini , G. Campi , N. L. Saini , A. Saccone , S. De Negri , M. Giovannini

The manipulation of Rashba-type spin-orbit coupling (SOC) in molecular beam epitaxy-grown Al$_x$In$_{1-x}$Sb/InSb/CdTe quantum well heterostructures is reported. The effective band bending provides robust two-dimensional quantum…

The momentum dependence of Rashba spin-orbit coupling (RSOC) is a key ingredient for engineering topological superconductors (TSCs), yet research has overwhelmingly focused on its linear-in-momentum form. This focus has restricted…

超导电性 · 物理学 2026-05-11 Qi-Sheng Xu , Zi-Ming Wang , Chui-Zhen Chen , Lun-Hui Hu , Rui Wang , Dong-Hui Xu

We derive an effective Hamiltonian which describes the dynamics of electrons in the conduction band of transition metal dichalcogenides (TMDC) in the presence of perpendicular electric and magnetic fields. We discuss in detail both the…

介观与纳米尺度物理 · 物理学 2014-03-18 Andor Kormányos , Viktor Zólyomi , Neil D. Drummond , Guido Burkard

The rise and fall of the superconducting transition temperature $T_c$ upon tuning carrier density or external parameters, such as pressure or magnetic field, is ubiquitously observed in a wide range of quantum materials. In order to…

超导电性 · 物理学 2020-08-17 Nazim Boudjada , Finn Lasse Buessen , Arun Paramekanti

In this paper, we study the quantum transport at the Ferromagnet$|$Noncentrosymmetric Superconductor (F$|$NCSC) interface of an F$|$S$|$F spin valve. In this context, we investigate the tunneling conductance and its dependence on Rashba…

超导电性 · 物理学 2019-10-15 Saumen Acharjee , Umananda Dev Goswami

Two dimensional electron systems at oxide interfaces are often influenced by a Rashba type spin- orbit coupling (SOC), which is tunable by a transverse electric field. Ferromagnetism at the interface can simultaneously induce strong local…

超导电性 · 物理学 2013-08-23 Florian Loder , Arno P. Kampf , Thilo Kopp

Recently room temperature superconductivity with Tc=15 degrees Celsius has been discovered in a pressurized complex ternary hydride, CSHx, which is a carbon doped H3S alloy. The nanoscale structure of H3S is a particular realization of the…

超导电性 · 物理学 2021-05-28 M. V. Mazziotti , T. Jarlborg , A. Bianconi , A. Valletta

SrTiO3 is known for its proximity to a ferroelectric phase and for showing an 'optimal' doping for superconductivity with a characteristic dome-like behaviour resembling systems close to a quantum critical point. Several mechanisms have…

超导电性 · 物理学 2023-06-28 Maria N. Gastiasoro , Maria Eleonora Temperini , Paolo Barone , Jose Lorenzana

High Tc superconductivity in FeAs-based multilayers (pnictides), evading temperature decoherence effects in a quantum condensate, is assigned to a Feshbach resonance (called also shape resonance) in the exchange-like interband pairing. The…

The mechanism of spin-phonon coupling in high-T$_C$ copper oxides is explored from band calculations on La$_{(2-x)}$Sr$_x$CuO$_4$ and HgBa$_2$CuO$_4$ systems. The LMTO band calculations, based on the local density approximation, are made…

材料科学 · 物理学 2015-06-25 T. Jarlborg

Motivated by the recent findings of unconventional superconductivity in $\mathrm{CoSi_2 / TiSi_2}$ heterostructures, we study the effect of interface induced Rashba spin orbit coupling on the conductance of a three terminal "T" shape…

超导电性 · 物理学 2021-05-18 Vivek Mishra , Yu Li , Fu-Chun Zhang , Stefan Kirchner

We theoretically study finite-momentum superconductivity in two-dimensional (2D) altermagnets with a Rashba-type spin-orbit coupling (RSOC). We show the phase diagrams obtained by solving a linearized gap equation, considering two…

超导电性 · 物理学 2025-05-26 Kohei Mukasa , Yusuke Masaki

Controlling lattice complexity or inhomogeneity of the doped oxide superconductors is shown to be a key term for control of the superconductivity critical temperature. All high temperature superconductors show anisotropic gaps and/or…

超导电性 · 物理学 2012-09-11 Antonio Bianconi

We conduct a thorough study of the persistent currents in a spin-orbit coupled ${\alpha}-T_3$ pseudospin-1 fermionic quantum ring (QR) that smoothly interpolates between graphene (${\alpha} = 0$, pseudospin-1/2) and a dice lattice…

介观与纳米尺度物理 · 物理学 2023-08-15 Mijanur Islam , Saurabh Basu

Spin-orbit coupling (SOC) is a key interaction in spintronics, allowing an electrical control of spin or magnetization and, vice versa, a magnetic control of electrical current. However, recent advances have revealed much broader…

The influence of Rashba spin-orbit coupling (SOC) on superconducting correlations in thin-film superconductor/antiferromagnet (S/AF) structures with compensated interfaces is studied. A unique effect of anisotropic enhancement of…

超导电性 · 物理学 2023-10-17 G. A. Bobkov , I. V. Bobkova , A. A. Golubov

We investigate the superconductivity in two-dimensional electron systems formed in SrTiO3 nanostructures. Our the- oretical analysis is based on the three-orbital model, which takes into account t2g orbitals of Ti ions. Because of the…

超导电性 · 物理学 2013-07-10 Yasuharu Nakamura , Youichi Yanase

Recent experiments have reported the emergence of high temperature superconductivity with critical temperature $T_c$ between 43K and 123K in a potassium doped aromatic hydrocarbon para-Terphenyl or p-Terphenyl. This achievement provides the…

We study spin-orbital coupling effect on the Josephson current through a superconductor (SC) heterojunction, consisting of two s-wave superconductors and a two-dimensional electron gas (2DEG) layer between them. The Rashba-type (RSOC)…

超导电性 · 物理学 2009-11-13 Z. H. Yang , Y. H. Yang , J. Wang , K. S. Chan