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Related papers: K2Mo3As3 is a Multi-Gap Electron-Phonon Supercondu…

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We use a first-principles based self-consistent momentum-resolved density fluctuation (MRDF) model to compute the combined effects of electron-electron and electron-phonon interactions to describe the superconducting dome in the correlated…

Superconductivity · Physics 2015-03-31 Tanmoy Das , Kapildeb Dolui

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…

Superconductivity · Physics 2023-06-28 Maria N. Gastiasoro , Maria Eleonora Temperini , Paolo Barone , Jose Lorenzana

We present a review of quasi-two-dimensional organic superconductors. These systems exhibit many interesting phenomena, including reduced dimensionality, strong electron-electron and electron-phonon interactions and the proximity of…

Strongly Correlated Electrons · Physics 2009-11-07 John Singleton , Charles Mielke

Density functional theory (DFT) based ab-initio calculations of electronic, phononic, and superconducting properties of 1T MoS2 are reported. The phonon dispersions are computed within density-functional-perturbation-theory (DFPT). We have…

Superconductivity · Physics 2021-07-08 Jagdish Kumar , Harkirat Singh

In this work, we show that a quasi-one-dimensional $d_{x^2-y^2}$-wave superconductor with Rashba spin-orbit coupling is a topological superconductor (TS). This time-reversal invariant DIII class TS supports two topologically protected zero…

Superconductivity · Physics 2012-01-31 L. M. Wong , K. T. Law

We report the superconductivity evolution of one unit cell (1-UC) and 2-UC FeSe films on SrTiO3(001) substrates with potassium (K) adsorption. By in situ scanning tunneling spectroscopy measurement, we find that the superconductivity in…

The binary compound V$_3$Ga can exhibit two near-equilibrium phases, consisting of the A15 structure that is superconducting, and the Heusler D0$_3$ structure that is semiconducting and antiferromagnetic. Density functional theory…

We report the synthesis of single phase Bi3O2S3 sample and confirm the occurrence of bulk superconductivity with transition temperature at 5.8 K. The Bi3O2S3 super-conductor is categorized as the typical type-II supercon-ductor based on the…

Superconductivity · Physics 2014-11-06 Jifeng Shao , Zhongheng Liu , Xiong Yao , Li Pi , Shun Tan , Changjin Zhang , Yuheng Zhang

Superconductivity in Mo3Sb7 is analyzed using the combined electronic structure and phonon calculations, and the electron--phonon coupling constant \lambda_{ph}=0.54 is determined from first principles. This value explains the experimental…

The trivalent alkali fullerides A$_3$C$_{60}$, where C$_{60}$ are a well established family of molecular superconductors. The electron pairing has s-wave symmetry and is due to standard electron-phonon coupling, in particular by Jahn-Teller…

Superconductivity · Physics 2009-06-24 M. Capone , M. Fabrizio , C. Castellani , E. Tosatti

We examine theoretically the superconducting state of BaFe$_2$(As$_{1-x}$P$_x$)$_2$, an isovalent doping 122 iron pnictide superconductor. We construct a three dimensional ten orbital model from first principles band calculation, and…

Superconductivity · Physics 2011-01-12 Katsuhiro Suzuki , Hidetomo Usui , Kazuhiko Kuroki

We investigate the effects of electron-phonon coupling, as well as of spin and charge fluctuations on the superconducting state in a single layer of FeSe on SrTiO$_3$ substrate. These three bosonic mediators of Cooper pairing are treated on…

Superconductivity · Physics 2020-11-11 Fabian Schrodi , Alex Aperis , Peter Oppeneer

The proximity-induced spin-triplet $f$-wave symmetry pairing in a monolayer molybdenum disulfide-superconductor hybrid features an interesting electron-hole excitations and also effective superconducting subgap, giving rise to a distinct…

Mesoscale and Nanoscale Physics · Physics 2017-03-08 Hadi Goudarzi , Maryam Khezerlou , Hasan Sedghi , Afifeh Ghorbai

In the quasi-two-dimensional (quasi-2D) copper- and iron-based superconductors, the onset of superconductivity is accompanied by a prominent peak in the magnetic spectrum at momenta close to the wave-vector of the nearby antiferromagnetic…

Superconductivity · Physics 2022-07-21 Fei Chen , Rafael M. Fernandes , Morten H. Christensen

Interfaces between transition-metal oxides are able to host two-dimensional electron gases (2DEGs) and exhibit exotic quantum phenomena. Here we report the observation of superconductivity below 230 mK for the heterostructure composed of…

Superconductivity · Physics 2022-12-27 Haoran Wei , Shengru Chen , Yuting Zou , Yuxin Wang , Meng Yang , Qinghua Zhang , Lin Gu , Kun Jiang , Er-Jia Guo , Zhi Gang Cheng

Interfacial phonons between iron-based superconductors (FeSCs) and perovskite substrates have received considerable attention due to the possibility of enhancing preexisting superconductivity. Using scanning tunneling spectroscopy, we…

Nb doped SrTiO3, the first discovered two-gap superconductor, is shown to be the most unconventional one of the known multiband superconductors, since the smaller of the two superconducting gaps follows a non BCS temperature dependence.…

Superconductivity · Physics 2009-09-24 A. Bussmann-Holder , A. R. Bishop , A. Simon

We report theoretical and experimental results on the transition metal pnictide WP. The theoretical outcomes based on tight-binding calculations and density functional theory indicate that WP is a three-dimensional superconductor with an…

Two-dimensional electron gases(2DEGs)based on KTaO3 are emerging as a promising platform for spin-orbitronics due to their high Rashba spin-orbit coupling (SOC) and gate-voltage tunability. The recent discovery of a superconducting state in…

We have performed an angle-resolved photoemission study of the iron pnictide superconductor KFe2As2 with Tc 4 K. Most of the observed Fermi surfaces show almost two-dimensional shapes, while one of the quasi-particle bands near the Fermi…

Strongly Correlated Electrons · Physics 2012-01-24 T. Yoshida , I. Nishi , A. Fujimori , M. Yi , R. G. Moore , D. -H. Lu , Z. -X. Shen , K. Kihou , P. M. Shirage , H. Kito , C. H. Lee , A. Iyo , H. Eisaki , H. Harima