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A possibility for a new family of intermetallic perovskite superconductors Sc3XB, with X = Tl, In, Ga and Al, is presented as a result of KKR electronic structure and pseudopotential phonon calculations. The large values of computed…

Superconductivity · Physics 2007-05-23 B. Wiendlocha , J. Tobola , S. Kaprzyk

We propose a superlattice model to describe superconductivity in layered materials, such as the borocarbide families with the chemical formul\ae\ $RT_2$B$_2$C and $RT$BC, with $R$ being (essentially) a rare earth, and $T$ a transition…

Superconductivity · Physics 2009-11-10 Thereza Paiva , Mohammed El-Massalami , Raimundo R. dos Santos

The article is focused on low temperature intermetallic A15 superconducting wires development for Nuclear Magnetic Resonance, NMR, and Nuclear Magnetic Imaging, MRI, magnets and also on cryogen-free magnets. There are many other…

Superconductivity · Physics 2015-06-24 B. A. Glowacki , X-Y. Yan , D. Fray , G. Chen , M. Majoros , Y. Shi

We report the synthesis, magnetic susceptibility and crystal structure analysis for NbB2+x (x = 0.0 to 1.0) samples. The study facilitates in finding a correlation among the lattice parameters, chemical composition and the superconducting…

Superconductivity · Physics 2009-11-13 Monika Mudgel , V. P. S. Awana , G. L. Bhalla , H. Kishan

Nanotubular materials inspired by crystalline diborides such as AlB_2 are proposed. The atomic structure, in particular the basic chemical question of where to put Al atoms in order to stabilize nanotubular Al-B systems, is investigated…

Materials Science · Physics 2007-05-23 Alexander Quandt , Amy Y. Liu , Ihsan Boustani

Superconductivity in granular films is controlled by the grain size and the inter-grain coupling. In a two-component granular system formed by a random mixture of a normal metal (N) and a superconductor (S), the superconducting nano-grains…

Mesoscale and Nanoscale Physics · Physics 2017-04-27 Pradnya Parab , Vivas Bagwe , Bhagyashree Chalke , H. Muthurajan , Pratap Raychaudhuri , Sangita Bose

Topological superconductivity is the quantum condensate of paired electrons with an odd parity of the pairing function. One of the candidates is the triplet pairing superconductor derived from topological insulator Bi2Se3 by chemical…

Superconductivity · Physics 2017-04-11 Guan Du , Yufeng Li , J. Schneeloch , R. D. Zhong , Genda Gu , Huan Yang , Hai-Hu Wen

Qubits made from superconducting materials are a mature platform for quantum information science application such as quantum computing. However, materials-based losses are now a limiting factor in reaching the coherence times needed for…

Chromium (Cr) is a transition metal element with 3$d$ orbital electrons. In most compounds containing Cr, due to the correlation effect, twofold features of localization and itinerancy are expected. The localization gives rise to a magnetic…

Superconductivity · Physics 2022-10-10 Zhengyan Zhu , Ying-Jie Zhang , Yiwen Li , Qing Li , Wen Duan , Hai-Hu Wen

The search for unconventional superconductivity has been focused on materials with strong spin-orbit coupling and unique crystal lattices. Doped bismuth selenide (Bi$_2$Se$_3$) is a strong candidate given the topological insulator nature of…

Superconductivity · Physics 2017-02-01 Tomoya Asaba , B. J. Lawson , Colin Tinsman , Lu Chen , Paul Corbae , Gang Li , Y. Qiu , Y. S. Hor , Liang Fu , Lu Li

A systematic study of the superconducting properties in a series of arc-melted Nb-B samples close to the 1:1 composition was carried out. Powder X-ray diffraction (XRD) shows that all samples are both non-stoichiometric, and comprising of…

Superconductivity · Physics 2017-08-30 F. Abud , L. E. Correa , I. R. Souza , A. J. S. Machado , M. S. Torikachvili , R. F. Jardim

The subcarbides B12C3 and B13C2 known for their abrasive properties, can be structurally considered as carbon inserted rhombohedral alpha-B12 and expressed as B12{C-C-C} and B12(C-B-C). Using density functional theory DFT computations, the…

Materials Science · Physics 2021-04-07 Samir F. Matar

Most superconductors have an isotropic, single component order parameter, and are well described by the BCS theory for superconductivity. Unconventional, multiple components superconductors are exceptionally rare and are much less…

Niobium carbide (NbC) is a high-field Type II superconductor with a critical temperature ($T_C$) of 11.1 K, just above that of pure Nb ($T_C = 9$ K). Downsizing NbC to the nanoparticle scale introduces significant alterations in its…

The ongoing quest for unambiguous signatures of topological superconductivity and Majorana modes in magnet-superconductor hybrid systems creates a high demand for suitable superconducting substrates. Materials that incorporate $s$-wave…

Superconductivity · Physics 2021-12-23 Philip Beck , Lucas Schneider , Lydia Bachmann , Jens Wiebe , Roland Wiesendanger

Inspired by recent predictions of superconductivity in B-C framework clathrates, we employ density functional theory to explore potential superconductors among hexagonal hydride-substituted compounds with compositions XB$_8$C, XB$_7$C$_2$,…

Superconductivity · Physics 2025-03-11 Bin Li , Yuxiang Fan , Chuanhui Yin , Junjie Zhai , Cong Zhu , Zhisi Cao , Jie Cheng , Shengli Liu

We report the synthesis of single-crystal NbC, a transition metal carbide with various unusual properties. Transport, magnetic susceptibility, and specific heat measurements demonstrate that NbC is a conventional superconductor with a…

The problems of participation of crystal chemical factors in creating of conditions to occurrence of a superconducting state in layered superconductors are considered. On the basis of the experimental data, given in the literature, new…

Superconductivity · Physics 2007-05-23 L. M. Volkova , S. A. Polyshchuk , F. E. Herbeck

We present here an overview of thermal conductivity behavior in magnetic superconductors: rare-earth nickel borocarbide intermetallic compounds, RNi_{2}B_{2}C, and the 2122 rare-earth rutheno-cuprates. The borocarbide family of…

Superconductivity · Physics 2009-09-29 B. I. Belevtsev , B. D. Hennings , K. D. D. Rathnayaka , D. G. Naugle

Recently, a host/guest clathrate SrB3C3 with sp3-bonded boron-carbon framework was synthesized at around 50 GPa. On the basis of electron count, the structure is understood as guest Sr2+ cations intercalated in the (B3C3)3- framework.…

Materials Science · Physics 2022-03-23 Peiyu Zhang , Xue Li , Xin Yang , Hui Wang , Hanyu Liu , Yansun Yao