Interplay of superconductivity and charge-density-wave order in kagome materialsIn the AV3Sb5 (A = K, Rb, Cs) kagome materials, superconductivity coexists with a charge density wave (CDW), constituting a new platform to study the interplay of…Sofie Castro Holbæk, Mark H. Fischer·Nov 26, 2024SaveLearn
Two characteristic contributions to the superconducting state of 2H-NbSe2Multiband superconductivity arises when multiple electronic bands contribute to the formation of the superconducting state, allowing distinct pairing interactions and gap structures. Here, we present…A. Alshemi, E. M. Forgan, A. Hiess et al.·Nov 26, 2024SaveLearn
Superconductivity in WBe2WBe2, which occurs in space group 194, with hexagonal symmetry P63/mmc, is prepared by arc-melting at temperatures above 2200 C, where Be vapor loss is significant. This study is motivated by recent…J. S. Kim, P. M. Dee, J. J. Hamlin et al.·Nov 26, 2024SaveLearn
Expanding the operational temperature window of a superconducting spin valveTo increase the efficiency of the superconducting spin valve (SSV), special attention should be paid to the choice of ferromagnetic materials for the F1/F2/S SSV multilayer. Here, we report the…A. A. Kamashev, N. N. Garif'yanov, A. A. Validov et al.·Nov 26, 2024SaveLearn
Charge density waves and superconductivity in the electron-positive fermion gas using a simple intuitive model. Part I: The model, instabilities, and phase diagramThe electron-positive fermion gas in three dimensions and T=0 is modeled as two independent fermion gases interacting via the coulomb interaction. The main advantage of the simple model is that all…Carl A. Kukkonen·Nov 26, 2024SaveLearn
Origin of the Unusual Temperature Dependence of the Upper Critical Field of Kagome Superconductor CsV3Sb5: Multiple Bands or van Hove Singularities?Van Hove singularities (vHs) located close to the Fermi level in Kagome superconductors AV3Sb5 (A = K, Rb, Cs) have profound influence on their electronic and transport characteristics. Specifically,…Ramakanta Chapai, Alexei E. Koshelev, Matthew P. Smylie et al.·Nov 25, 2024SaveLearn
Intrinsic Quasiparticle Lifetime in a Superconducting AluminumWe use time-resolved thermometry to monitor the decay of nonequilibrium quasiparticles in superconducting Al in the temperature range from 0.3\,K to 1.2\,K. The quasiparticle lifetime at higher…Konrad Norowski, Marek Foltyn, Alexander Savin et al.·Nov 25, 2024SaveLearn
Two-gap superconductivity in the noncentrosymmetric La3Se4 compoundPoint-contact Andreev reflection spectroscopy at low temperatures and high magnetic fields has been performed on a noncentrosymmetric La3Se4 superconductor with a critical temperature Tc = 8…F. Košuth, N. Potomová, Z. Pribulová et al.·Nov 25, 2024SaveLearn
Decoupling between dx2-y2 and dz2 orbitals in hole doped La3Ni2O7Through Sr and Ca doping to the La sites, we successfully obtained the hole doped La3-xAxNi2O7 (A = Sr and Ca) thin films by using the pulsed-laser deposition technique. Temperature…Yuecong Liu, Mengjun Ou, Yi Wang et al.·Nov 25, 2024SaveLearn
Resonant control of magnetization in a shunted φ0 junction with LC circuitThe possibility of magnetization resonant control in a Josephson superconductor-ferromagnet-superconductor φ0 junction shunted by an LC circuit is demonstrated. As a result of the resonance of…I. R. Rahmonov, Yu. M. Shukrinov, O. A. Kibardina et al.·Nov 25, 2024SaveLearn
First-Principles Study of High-Temperature Superconductivity in X2MH6 Compounds under 20 GPaResearch on high-temperature superconductors has primarily focused on hydrogen-rich compounds, however, the need for extreme pressures limits their practical applications. The X2MH6-type structure…Jing Luo, Qun Wei, Xiaofei Jia et al.·Nov 24, 2024SaveLearn
Charge density waves and superconductivity in the electron-positive fermion gas using a simple intuitive model. Part II: Collective modes, effective interactions, superconductivity, and transportSuperconductivity and the normal state electrical resistivity which varies as T2 are strongly enhanced near the compressibility and charge density wave instabilities in the electron-positive…Carl A. Kukkonen·Nov 24, 2024SaveLearn
Evidence of the inverse proximity effect in tunnel magnetic Josephson JunctionsMagnetic Josephson Junctions (MJJs) are a special class of hybrid systems where antagonistic correlations coexist, thus providing a key for advances in weak superconductivity, superconducting…Roberta Satariano, Anatoly Fjodorovich Volkov, Halima Giovanna Ahmad et al.·Nov 24, 2024SaveLearn
Josephson transistor and robust supercurrent enhancement with spin-split superconductorsWe theoretically investigate the supercurrent flow in a Josephson junction consisting of two spin-split superconductors combined by a normal metal weak link. The normal metal may be driven out of…Chi Sun, Jacob Linder·Nov 24, 2024SaveLearn
Critical Role of Disorder for Superconductivity in the Series of Epitaxial Ti(O,N) FilmsRealizing experimental control of superconductivity is of paramount importance to advancing both basic research and technological applications. Disorder, generally existing in most superconductors,…Fengmiao Li, Oliver Dicks, Myung-Geun Han et al.·Nov 24, 2024SaveLearn
Possibility of BCS-BEC crossover in κ-type organic superconductorsThe realization of BCS-BEC crossover in superconductors, which smoothly connects Bardeen-Cooper-Schrieffer (BCS) theory with Bose-Einstein Condensation (BEC) in fermion systems, is an intriguing…Hiroshi Watanabe, Hiroaki Ikeda·Nov 23, 2024SaveLearn
Coexistence of gapless and gapped vortex modes with Majorana corner states in a 2D second-order topological superconductorAlthough the appearance of vortex-localized states with zero energy in first-order topological superconductors is well known, their possibility to form in the higher-order topological phase of 2D…A. D. Fedoseev, A. O. Zlotnikov·Nov 22, 2024SaveLearn
Ab initio study of orbital-selective superconductivity in γ-BiPdWe investigate the superconducting (SC) properties of experimentally realised γ-BiPd by solving the anisotropic Migdal-Eliashberg equations in conjunction with ab initio relativistic…Sonu Prasad Keshri, Guang-Yu Guo·Nov 22, 2024SaveLearn
Reply to "Is MgB2 a superconductor? Comment on "Evidence Against Superconductivity in Flux Trapping Experiments on Hydrides Under High Pressure" "The preceding Comment [1], previously posted as arXiv:2312.04495 [2], on our paper J. Supercond. Nov. Mag. 35, 3141 (2022) [3] provides a welcome opportunity to clarify what we understand to be…J. E. Hirsch, F. Marsiglio·Nov 22, 2024SaveLearn
Resonant escape in Josephson tunnel junctions under millimeter-wave irradiationThe microwave-driven dynamics of the superconducting phase difference across a Josephson junction is now widely employed in superconducting qubits and quantum circuits. With the typical energy level…J. N. Kämmerer, S. Masis, K. Hambardzumyan et al.·Nov 22, 2024SaveLearn
Collective mode across the BCS-BEC crossover in Holstein modelWe investigate the emergence of the collective mode in the phonon spectra of the superconducting state within the Holstein model by varying the electron-phonon coupling. Using dynamical mean field…Tae-Ho Park, Han-Yong Choi·Nov 22, 2024SaveLearn
Fermi surface reconstruction and enhanced spin fluctuations in strained La3Ni2O7 on LaAlO3(001) and SrTiO3(001)We explore the structural and electronic properties of the bilayer nickelate La3Ni2O7 on LaAlO3(001) and SrTiO3(001) by using density functional theory including a Coulomb repulsion term. For…Benjamin Geisler, James J. Hamlin, Gregory R. Stewart et al.·Nov 21, 2024SaveLearn
Superconductivity in Ternary Germanite TaAlxGe2-x with a C40 chiral structureWe report a new family of chiral intermetallic superconductors TaAlxGe2-x. The mother compound TaGe2 has a C40-type chiral hexagonal crystal structure with a pair of enantiomorphic space…Daigo Koizumi, Shingo Kisanuki, Kenta Monden et al.·Nov 21, 2024SaveLearn
Superconducting p-wave pairing effects on one-dimensional non-Hermitian quasicrystals with power law hoppingWe study the effects of superconducting p-wave pairing on the non-Hermitian Aubry-André-Harper model with power-law hopping. For the case of short-range hopping, weak pairing leads to oscillating…Shaina Gandhi, Jayendra N. Bandyopadhyay·Nov 21, 2024SaveLearn
THz optical response of Ba(Fe1-xNix)2As2 films analyzed within the three-band Eliashberg s -wave modelThe uncertainty of the nature of the normal state and superconducting condensate of unconventional superconductors continues to stimulate considerable speculation about the mechanism of…Yurii A. Aleshchenko, Andrey V. Muratov, Elena S. Zhukova et al.·Nov 21, 2024SaveLearn