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Charge density wave and superconductivity in 6R-TaS2
Sudip Pal, Prakash Bahera, S. R. Sahoo +6
The layered transition metal dichalcogenide compounds 1T-TaS2 and 4H-TaS2 are well known for their exotic properties, which include charge density wave, superconductivity, Mott tra…
Robust topological state against magnetic impurities observed in superconductor PbTaSe2
Daniel Multer, Jia-Xin Yin, Songtian S. Zhang +5
Magnetic impurities deposited on topological superconductor candidate PbTaSe2 can introduce a non-splitting zero-energy state inside the superconducting gap, which has been propose…
Fully gapped superconductivity without sign reversal in the topological superconductor PbTaSe
Yue Sun, Shunichiro Kittaka, Toshiro Sakakibara +8
We investigate the superconducting gap function of topological superconductor PbTaSe. Temperature, magnetic field, and three-dimensional (3D) field-angle dependences of the spe…
Wohlleben Effect and Emergent Pi junctions in superconducting Boron doped Diamond thin films
L. Govindaraj, S. Arumugam, R. Thiyagarajan +9
Diamond is an excellent band insulator. However, boron (B) doping is known to induce superconductivity. We present two interesting effects in superconducting B doped diamond (BDD)…
Field-free platform for topological zero-energy mode in superconductors LiFeAs and PbTaSe
Songtian S. Zhang, Jia-Xin Yin, Guangyang Dai +22
Superconducting materials exhibiting topological properties are emerging as an exciting platform to realize fundamentally new excitations from topological quantum states of matter.…
Evidence for nematic superconductivity of topological surface states in PbTaSe2
Tian Le, Yue Sun, Hui-Ke Jin +16
Spontaneous symmetry breaking has been a paradigm to describe the phase transitions in condensed matter physics. In addition to the continuous electromagnetic gauge symmetry, an un…
Correlation between non-Fermi-liquid behavior and superconductivity in (Ca, La)(Fe,Co)As2 iron arsenides: A high-pressure study
W. Zhou, F. Ke, Xiaofeng Xu +11
Non-Fermi-liquid (NFL) phenomena associated with correlation effects have been widely observed in the phase diagrams of unconventional superconducting families. Exploration of the…
Evidence of s-wave superconductivity in the noncentrosymmetric LaIr
B. Li, C. Q. Xu, W. Zhou +9
Superconductivity in noncentrosymmetric compounds has attracted sustained interest in the last decades. Here we present a detailed study on the transport, thermodynamic properties…
Proximity-effect-induced Superconducting Gap in Topological Surface States - A Point Contact Spectroscopy Study of NbSe2/Bi2Se3 Superconductor-Topological Insulator Heterostructures
Wenqing Dai, Anthony Richardella, Renzhong Du +8
Proximity-effect-induced superconductivity was studied in epitaxial topological insulator Bi2Se3 thin films grown on superconducting NbSe2 single crystals. A point contact spectros…
Topological Phase Transition Under Pressure in the Topological Nodal Line Superconductor PbTaSe
C. Q. Xu, R. Sankar, W. Zhou +8
A first-order-like resistivity hysteresis is induced by a subtle structural transition under hydrostatic pressure in the topological nodal-line superconductor PbTaSe. This stru…
SR study of noncentrosymmetric superconductor PbTaSe
M. N. Wilson, A. M. Hallas, Y. Cai +6
We present muon spin rotation (SR) measurements on the noncentrosymmetric superconductor PbTaSe. From measurements in an applied transverse field between and $H_{c2…
Topological quantum phase transition and superconductivity induced by pressure in the bismuth tellurohalide BiTeI
Yanpeng Qi, Wujun Shi, Pavel G. Naumov +8
A pressure-induced topological quantum phase transition has been theoretically predicted for the semiconductor BiTeI with giant Rashba spin splitting. In this work, the evolution o…
Superconducting Topological Surface States in Non-centrosymmetric Bulk Superconductor PbTaSe2
Syu-You Guan, Peng-Jen Chen, Ming-Wen Chu +5
The search for topological superconductors (TSCs) is one of the most urgent contemporary problems in condensed matter systems. TSCs are characterized by a full superconducting gap…
Single crystal growth and physical property characterization of PbTaSe2 as a noncentrosymmetric type-II superconductor
Raman Sankar, G. Narsinga Rao, I. Panneer Muthuselvam +11
The single crystal growth and superconducting properties of PbTaSe2 with non-centrosymmetric crystal structure is reported. Using the chemical vapor transport (CVT) technique, PbTa…
Momentum space imaging of Cooper pairing in a half-Dirac-gas topological superconductor (a helical 2D topological superconductor)
Su-Yang Xu, Nasser Alidoust, Ilya Belopolski +14
Superconductivity in Dirac electrons has recently been proposed as a new platform between novel concepts in high-energy and condensed matter physics. It has been proposed that supe…