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2H-NbSe2 is one of the most widely researched transition metal dichalcogenide (TMD) superconductors, which undergoes charge-density wave (CDW) transition at TCDW about 33 K and superconducting transition at Tc of 7.3 K. To explore the…

Superconductivity · Physics 2019-07-04 Dong Yan , Yishi Lin , Guohua Wang , Zhen Zhu , Shu Wang , Lei Shi , Yuan He , Man-Rong Li , Hao Zheng , Jie Ma , Jinfeng Jia , Yihua Wang , Huixia Luo

2H-NbSe2 is known to be an archetype layered transitional metal dichalcogenide superconductor with a superconducting transition temperature of 7.3 K.In this article, we investigate the influence of Sn intercalation on superconducting…

Transition metal dichalcogenides (TMDCs) usually exhibit layered polytypic structures due to the weak interlayer coupling. 2H-NbSe2 is one of the most widely studied in the pristine TMDC family due to its high superconducting transition…

Superconductivity · Physics 2020-01-08 Dong Yan , Shu Wang , Yishi Lin , Guohua Wang , Yijie Zeng , Mebrouka Boubeche , Yuan He , Jie Ma , Yihua Wang , Dao-Xin Yao , Huixia Luo

We report the characterization of the misfit compound (Pb1-xSnxSe2)1.16(TiSe2)2, in which a [100] rocksalt bilayer of Pb1-xSnxSe, which is a topological crystalline insulator in bulk form, alternates with a double layer of the normally…

Superconductivity · Physics 2016-05-25 Huixia Luo , Kai Yan , Weiwei Xie , Brendan F. Phelan , R. J. Cava

The bulk polycrystalline sample FeSe1/2Te1/2 is synthesized by solid state reaction route in an evacuated sealed quartz tube at 750 oC. The presence of superconductivity is confirmed through magnetization/thermoelectric/resistivity studies.…

Superconductivity · Physics 2015-05-20 V. P. S. Awana , Govind , Anand Pal , Bhasker Gahtori , S. D. Kaushik , A. Vajpayee , Jagdish Kumar , H. Kishan

Superconductors based on transition metal dichalcogenides are of substantial current relevance, towards attaining topological superconductivity. Here we report a detailed study on the synthesis and electromagnetic characterization of…

Superconductivity · Physics 2023-08-11 K. Yadav , M. Lamba , M. Singh , A. Kumar , S. Patnaik

CuAl2-type transition-metal (Tr) zirconides are superconductor family, and the Tr-site element substitution largely modifies its transition temperature (Tc). Here, we synthesized polycrystalline samples of Fe1-xNixZr2 by arc melting. From…

Topological superconductors (TSCs) are unconventional superconductors with bulk superconducting gap and in-gap Majorana states on the boundary that may be used as topological qubits for quantum computation. Despite their importance in both…

We report superconductivity in Sn$_{x}$NbSe$_{2-\delta}$, a topological nodal-line semimetal candidate with a noncentrosymmetric crystal structure. The superconducting transition temperature $T_{c}$ of this compound is extremely sensitive…

We report a mechanical point-contact spectroscopy study on the single crystalline NbGe$_2$ with a superconducting transition temperature $T\rm_c$ = 2.0 - 2.1 K. The differential conductance curves at 0.3 K can be well fitted by a single gap…

Superconductivity · Physics 2021-06-29 Dongting Zhang , Tian Le , Baijing Lv , Lichang Yin , Chufan Chen , Zhiyong Nie , Dajun Su , Huiqiu Yuan , Zhu-An Xu , Xin Lu

For unconventional heavy Fermion superconductors, typified by UBe_13, the superconducting transition temperatures Tc are shown to correlate with a characteristic energy hbar^2 /(m* xi^2), m* being the effective mass and xi the coherence…

Superconductivity · Physics 2007-05-23 G. G. N. Angilella , N. H. March , R. Pucci

The transition metal dichalcogenide PdTe$_2$ was recently shown to be a unique system where a type II Dirac semimetallic phase and a superconducting phase co-exist. This observation has led to wide speculation on the possibility of the…

Superconductivity · Physics 2018-01-31 Shekhar Das , Amit , Anshu Sirohi , Lalit Yadav , Sirshendu Gayen , Yogesh Singh , Goutam Sheet

We report the pressure dependence of the superconducting transition temperature, $T_c$, in TlNi$_2$Se$_{2-x}$S$_x$ detected via the AC susceptibility method. The pressure-temperature phase diagram constructed for TlNi$_{2}$Se$_{2}$,…

Two correlated superconducting phases are identified in layered superconductor BaTi2(Sb1-xBix)2O (x=0.16), with the superconducting transition temperatures of TC = 6 K (the high TC phase) and 3.4 K (the low TC Phase), respectively. The 6 K…

Superconductivity · Physics 2015-06-19 Y. Wu , X. L. Dong , M. W. Ma , H. X. Yang , C. Zhang , F. Zhou , X. J. Zhou , Z. X. Zhao

Though the superconducting phase of the type-II Dirac semimetal PdTe$_2$ was shown to be conventional in nature, the phase continued to be interesting in terms of its magnetic properties. While certain experiments indicated an unexpected…

Superconductivity · Physics 2020-01-29 Aastha Vasdev , Anshu Sirohi , M. K. Hooda , C. S Yadav , Goutam Sheet

Sn(1-x)In(x)Te is a possible candidate for topological superconductivity. Previous work has shown that substitution of In for Sn in the topological crystalline insulator SnTe results in superconductivity, with the transition temperature,…

Superconductivity · Physics 2013-07-29 R. D. Zhong , J. A. Schneeloch , X. Y. Shi , Z. J. Xu , C. Zhang , J. M. Tranquada , Q. Li , G. D. Gu

We report the discovery of a low-temperature phase transition in Bi_2Sr_2Ca(Ni_xCu_{1-x})_20_8 high temperature superconductor. This transition manifests itself as a sharp reduction of the thermal conductivity of the samples at a…

Superconductivity · Physics 2008-02-03 R. Movshovich , M. A. Hubbard , M. B. Salamon , A. V. Balatsky , R. Yoshizaki , J. L. Sarrao

The structural misfit compound (PbSe)1.16(TiSe2)2 is reported. It is a superconductor with a Tc of 2.3 K. (PbSe)1.16(TiSe2)2 derives from a parent compound, TiSe2, which shows a charge density wave transition and no superconductivity. The…

Superconductivity · Physics 2015-05-19 N. Giang , Q. Xu , Y. S. Hor , A. J. Williams , S. E. Dutton , H. W. Zandbergen , R. J. Cava

Transition metal dichalcogenides (TMDC) are a rich family of two-dimensional materials displaying a multitude of different quantum ground states. In particular, d$^3$ TMDCs are paradigmatic materials hosting a variety of symmetry broken…

Mesoscale and Nanoscale Physics · Physics 2022-03-10 Somesh Chandra Ganguli , Viliam Vaňo , Shawulienu Kezilebieke , Jose L. Lado , Peter Liljeroth

Through the solid state reaction method, we synthesized a new BiSe2-based superconductor Sr0:5La0:5FBiSe2 with superconducting transition temperature Tc?3.8 K. A strong diamagnetic signal below Tc in susceptibility ?(T) is observed…

Superconductivity · Physics 2016-05-02 Lin Li , Yongliang Xiang , Yihong Chen , Wenhe Jiao , Chuhang Zhang , Li Zhang , Jianhui Dai , Yuke Li
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