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The layered structure of LiPdH was theoretically suggested to be a superconductor as a result of its larger electron-phonon coupling constant compared to that of PdH. However, the experimental results reported contrary findings, with no…

Superconductivity · Physics 2025-02-05 Zahra Alizadeh , Yue-Wen Fang , Ion Errea , M. R. Mohammadizadeh

Surfaces of three-dimensional topological insulators have emerged as one of the most remarkable states of condensed quantum matter1-5 where exotic electronic phases of Dirac particles should arise1,6-8. Here we report a discovery of surface…

Although the microscopic origin of the superconductivity in high Tc copper oxides remains the subject of active inquiry, several of their electronic characteristics are well established as universal to all the known materials, forming the…

Superconductivity · Physics 2009-11-10 R. E. Schaak , T. Klimczuk , M. L. Foo , R. J. Cava

We have investigated electronic structures of a newly discovered antiperovskite superconductor MgCNi$_3$ and related compounds MgBNi$_3$ and MgNNi$_3$. In MgCNi$_3$, a peak of very narrow and high density of states is located just below…

Superconductivity · Physics 2009-11-07 J. H. Shim , B. I. Min

The Li$_2$S-P$_2$S$_5$ pseudo-binary system has been a valuable source of promising superionic conductors, with $\alpha$-Li$_3$PS$_4$, $\beta$-Li$_3$PS$_4$, HT-Li$_7$PS$_6$, and Li$_7$P$_3$S$_{11}$ having excellent room temperature Li-ion…

Materials Science · Physics 2023-07-04 Ronald L. Kam , KyuJung Jun , Luis Barroso-Luque , Julia H. Yang , Fengyu Xie , Gerbrand Ceder

Potassium-doped terphenyl has recently attracted attention as a potential host for high-transition-temperature superconductivity. Here, we elucidate the many-body electronic structure of recently synthesized potassium-doped terphenyl…

Strongly Correlated Electrons · Physics 2022-05-03 John Sous , Natalia A. Gadjieva , Colin Nuckolls , David R. Reichman , Andrew J. Millis

Structural, electronic, and magnetic properties of undoped and aliovalent-ion (Ca, F)-doped LaOFeP, which undergo superconducting transitions at transition temperatures (Tc) 4-7 K [Kamihara et al, J. Am. Chem. Soc. 128, 10012, (2006)], were…

We report a first-principles Wannier function study of the electronic structure of PdTe. Its electronic structure is found to be a broad three-dimensional Fermi surface with highly reduced correlations effects. In addition, the higher…

Superconductivity · Physics 2013-09-13 Chinedu E. Ekuma , Chia-Hui Lin , Juana Moreno , Wei Ku , Mark Jarrell

Recently, the films of the Ruddlesden-Popper (RP) nickelate superconductors, in which the (La,Pr)$_3$Ni$_2$O$_7$ system exhibits a remarkable transition temperature $T_c$ exceeding 40 K, were synthesized at ambient pressure. We…

Superconductivity · Physics 2026-04-07 Yu-Han Cao , Kai-Yue Jiang , Hong-Yan Lu , Da Wang , Qiang-Hua Wang

The electronic structures of the ground state for several different superconducting materials, such as cuprates, conventional 3-dimensional superconductors, doped semiconductors and low-dimensional systems, are quite different and sometimes…

Superconductivity · Physics 2014-12-18 T. Jarlborg

Experiments on rare-earth filled skutterudites demonstrate an intriguing array of thermodynamic, transport and superconducting properties, and bring to fore theoretical challenges posed by f-electron systems. First principle calculations…

Strongly Correlated Electrons · Physics 2019-09-11 Gheorghe Lucian Pascut , Michael Widom , Kristjan Haule , Khandker F. Quader

K$_3$-picene is a superconducting molecular crystal with critical temperature T$_c=7$K or 18K, depending on preparation conditions. Using density functional theory we show that electron-phonon interaction accounts for T$_c ~ 3-8$ K. The…

Superconductivity · Physics 2015-05-28 Michele Casula , Matteo Calandra , Gianni Profeta , Francesco Mauri

The geometrical and electronic structure of tripotassium doped phenanthrene, \ce{K3C14H10}, have been studied by first-principles density functional theory. The main effect of potassium doping is to inject charge in the narrow phenanthrene…

Materials Science · Physics 2011-11-14 P. L. de Andres , A. Guijarro , J. A. Verges

Electronic and structural properties of a 3D carbon allotrope made of Hopf-linked graphenes, which we call a Hopfene - a type of topological crystal, are examined by semi-empirical molecular-orbital and density-functional-theoretical…

Materials Science · Physics 2019-12-30 Isao Tomita , Shinichi Saito

Based on First-principles calculation, we have investigated electronic structure of a ZrCuSiAs structured superconductor LaNiPO. The density of states, band structures and Fermi surfaces have been given in detail. Our results indicate that…

Superconductivity · Physics 2008-06-14 Wei-Bing Zhang , Xiao-Bing Xiao , Wei-Yang Yu , Na Wang , Bi-Yu Tang

A novel stable crystallographic structure is discovered in a variety of ABO3, ABF3 and A2O3 compounds (including materials of geological relevance, prototypes of multiferroics, exhibiting strong spin-orbit effects, etc...), via the use of…

Materials Science · Physics 2015-01-20 Changsong Xu , Bin Xu , Yurong Yang , Huafeng Dong , A. R. Oganov , Shanying Wang , Wenhui Duan , Binglin Gu , L. Bellaiche

A new organic superconductor, possibly with formula $K_3$ p-terphenyl, has been discovered by Wang, Gao, Huang and Chen, reaching a very high $T_c$ of about 120~K. Besides a clear diamagnetic signal, most other details such as stoichiometry…

Superconductivity · Physics 2017-05-16 Michele Fabrizio , Tao Qin , S. Shahab Naghavi , Erio Tosatti

Recently, Lee et al. reported the experimental discovery of room-temperature ambient-pressure superconductivity in a Cu-doped lead-apatite (LK-99) (arXiv:2307.12008, arXiv:2307.12037). Remarkably, the superconductivity persists up to 400 K…

Materials Science · Physics 2023-08-07 Junwen Lai , Jiangxu Li , Peitao Liu , Yan Sun , Xing-Qiu Chen

We have conducted a comprehensive angle-resolved photoemission study on the normal state electronic structure of the Fe-based superconductor Ba$_{0.6}$K$_{0.4}$Fe$_2$As$_2$. We have identified four dispersive bands which cross the Fermi…

NdO$_{0.5}$F$_{0.5}$BiS$_{2}$ is a new layered superconductor. We have studied the low-lying electronic structure of a single crystalline NdO$_{0.5}$F$_{0.5}$BiS$_{2}$ superconductor, whose superconducting transition temperature is 4.87K,…

Superconductivity · Physics 2014-07-23 Z. R. Ye , H. F. Yang , D. W. Shen , J. Jiang , X. H. Niu , D. L. Feng , Y. P. Du , X. G. Wan , J. Z. Liu , X. Y. Zhu , H. H. Wen , M. H. Jiang