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High-entropy ceramics (HECs) are solid solutions of inorganic compounds with one or more Wyckoff sites shared by equal or near-equal atomic ratios of multi-principal elements. Material design and property tailoring possibilities emerge from…

Hydrogen-rich superhydrides are believed to be very promising high-T$_c$ superconductors, with experimentally observed critical temperatures near room temperature, as shown in recently discovered lanthanide superhydrides at very high…

Superconductivity · Physics 2021-09-09 Evgeny Plekhanov , Zelong Zhao , Francesco Macheda , Yao Wei , Nicola Bonini , Cedric Weber

Due to its low atomic mass hydrogen is the most promising element to search for high-temperature phononic superconductors. However, metallic phases of hydrogen are only expected at extreme pressures (400 GPa or higher). The measurement of a…

Superconductivity · Physics 2016-03-23 José A. Flores-Livas , Antonio Sanna , E. K. U. Gross

Understanding the behavior of molecular systems under pressure is a fundamental problem in condensed matter physics. In the case of nitrogen, the determination of the phase diagram and in particular of the melting line, are largely open…

Materials Science · Physics 2010-07-27 Davide Donadio , Leonardo Spanu , Ivan Duchemin , Francois Gygi , Giulia Galli

We employ dynamical mean-field theory to identify the materials properties that optimize Tc for a generalized double-exchange (DE) model. We reach the surprising conclusion that Tc achieves a maximum when the band angular momentum j equals…

Strongly Correlated Electrons · Physics 2009-11-11 Juana Moreno , Randy S. Fishman , Mark Jarrell

A concentration-saturated helium mixture at the melting pressure consists of two liquid phases and one or two solid phases. The equilibrium system is univariant, whose properties depend uniquely on temperature. Four coexisting phases can…

Other Condensed Matter · Physics 2016-02-02 J. Rysti , M. S. Manninen , J. Tuoriniemi

Recent experimental developments in hydrogen-rich materials in high pressures have put this class of materials above others in the race toward room temperature superconductivity. As it is the basis of all the materials in this class, the…

Superconductivity · Physics 2022-02-03 Mehmet Dogan , Sehoon Oh , Marvin L. Cohen

Searching for new superconductors, especially unconventional superconductors, has been studied extensively for decades but remains one of the major outstanding challenges in condensed matter physics. Medium/high-entropy alloys (MEAs-HEAs)…

The melting temperature is important for materials design because of its relationship with thermal stability, synthesis, and processing conditions. Current empirical and computational melting point estimation techniques are limited in…

The highest critical temperature of superconductivity Tc has been achieved in cuprates: 133 K at ambient pressure and 164 K at high pressures. As the nature of superconductivity in these materials is still not disclosed, the prospects for a…

Superconductivity · Physics 2014-12-02 A. P. Drozdov , M. I. Eremets , I. A. Troyan

The search for new superconducting compounds with higher critical temperatures $T_{c}^{\prime}$s has long been the very heart of scientific research on superconductivity. It took 75 years for scientists to push the $T_{c}$ above liquid…

Superconductivity · Physics 2017-03-21 Ren-Shu Wang , Yun Gao , Zhong-Bing Huang , Xiao-Jia Chen

We describe high-Tc superconductivity in layered materials within a BCS theory as a BEC of massless-like Cooper pairons satisfying a linear dispersion relation, and propagating within quasi-2D layers of finite width defined by the charge…

Superconductivity · Physics 2017-08-23 C. Villarreal , M. de Llano

We cast the relation between the chemical composition of a solid-state material and its superconducting critical temperature (Tc) as a statistical learning problem with reduced complexity. Training of query-aware similarity-based ridge…

Superconductivity · Physics 2024-11-11 Siwoo Lee , Jason Hattrick-Simpers , Young-June Kim , O. Anatole von Lilienfeld

The increase of energy in accelerators over the past decades has led to the design of superconducting magnets for both accelerators and the associated detectors. The use of Nb-Ti superconducting materials allows an increase in the dipole…

Accelerator Physics · Physics 2015-01-29 P Védrine

We are concerned with the time decay rates of strong solutions to a non-conservative compressible viscous two-phase fluid model in the whole space R3. Compared to the previous related works, the main novelty of this paper lies in the fact…

Analysis of PDEs · Mathematics 2020-10-23 Huaqiao Wang , Juan Wang , Guochun Wu , Yinghui Zhang

We discovered the enhancement of superconducting transition temperature, Tc, in yttrium sesquicarbide system with the maximum Tc of Tc=18K and their superconducting properties were discussed. The crystal structure of Y2C3 is the…

Superconductivity · Physics 2007-05-23 G. Amano , S. Akutagawa , T. Muranaka , Y. Zenitani , J. Akimitsu

The discovery of clathrate superhydrides has approached the long-standing dream of room-temperature superconductivity and thus inspired their prosperous research under high pressure. However, how to experimentally optimize these compelling…

Superconductivity · Physics 2025-09-30 Jingkai Bi , Yuki Nakamoto , Katsuya Shimizu , Mi Zhou , Hongbo Wang , Guangtao Liu , Yanming Ma

The recent discovery of superconductivity at 190~K in highly compressed H$_{2}$S is spectacular not only because it sets a record high critical temperature, but because it does so in a material that appears to be, and we argue here that it…

Superconductivity · Physics 2015-03-05 N. Bernstein , C. S. Hellberg , M. D. Johannes , I. I. Mazin , M. J. Mehl

Machine learning (ML) models utilizing structure-based features provide an efficient means for accurate property predictions across diverse chemical spaces. However, obtaining equilibrium crystal structures typically requires expensive…

Materials Science · Physics 2021-04-22 Yunxing Zuo , Mingde Qin , Chi Chen , Weike Ye , Xiangguo Li , Jian Luo , Shyue Ping Ong

Hydrogen-rich materials are the most promising candidates for high-temperature conventional superconductors under ambient pressure. Multinary hydrides have abundant structural configurations and are more promising to find high-temperature…

Superconductivity · Physics 2025-08-18 Bo-Wen Yao , Zhenfeng Ouyang , Xiao-Qi Han , Chang-Jiang Wu , Peng-Jie Guo , Ze-Feng Gao , Zhong-Yi Lu