166 citations · 1.1k across the 39 of their papers we have counts for
25 papers · 1 filter
Time-Reversal Symmetry Breaking Superconductivity in Three-Dimensional Dirac Semimetallic Silicides
Sudeep K. Ghosh, P. K. Biswas, Chunqiang Xu +4
Superconductors with broken time-reversal symmetry represent arguably one of the most promising venues for realizing highly sought-after topological superconductivity that is vital…
Superconductivity modulated by structural phase transitions in pressurized vanadium-based kagome metals
Feng Du, Rui Li, Shuaishuai Luo +10
The interplay of superconductivity with electronic and structural instabilities on the kagome lattice provides a fertile ground for the emergence of unusual phenomena. The vanadium…
Superconductivity in PtPb with Possible Nontrivial Band Topology
C. Q. Xu, B. Li, L. Zhang +9
Superconductivity in topological quantum materials is much sought after as it represents the key avenue to searching for topological superconductors, which host a full pairing gap…
Chiral singlet superconductivity in the weakly correlated metal LaPt3P
P. K. Biswas, S. K. Ghosh, J. Z. Zhao +7
Topological superconductors (SCs) are novel phases of matter with nontrivial bulk topology. They host at their boundaries and vortex cores zero-energy Majorana bound states, potent…
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…
Pressure-induced superconductivity in topological type II Dirac semimetal NiTe2
Tao Li, Ke Wang, Chunqiang Xu +10
Very recently, NiTe2 has been reported to be a type II Dirac semimetal with Dirac nodes near the Fermi surface. Furthermore, it is unveiled that NiTe2 presents the Hall Effect, whi…
Superconductivity of the FeSe/SrTiO3 Interface in the View of BCS-BEC Crossover
Shuyuan Zhang, Guangyao Miao, Jiaqi Guan +6
In paired Fermi systems, strong many-body effects exhibit in the crossover regime between the Bardeen-Cooper-Schrieffer (BCS) and the Bose-Einstein condensation (BEC) limits. The c…
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…
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…
Anisotropic Ginzburg-Landau scaling of Hc2 and transport properties of 112-type Ca0.8La0.2Fe0.98Co0.02As2 single crystal
Xiangzhuo Xing, Wei Zhou, Nan Zhou +5
High-quality single crystal of Ca0.8La0.2Fe0.98Co0.02As2 has been successfully synthesized using a self-flux method. The magnetization measurement reveals a second peak effect and…
Upward curvature of the upper critical field and the V-shaped pressure dependence of in the noncentrosymmetric superconductor PbTaSe
J. R. Wang, Xiaofeng Xu, N. Zhou +10
The temperature evolution of the upper critical field in the noncentrosymmetric superconductor PbTaSe was determined via resistivity measurements down to 0.5 K. A p…
Quasi-linear magnetoresistance and the violation of Kohler's rule in the quasi-one-dimensional TaPdTe superconductor
Xiaofeng Xu, W. H. Jiao, N. Zhou +9
We report on the quasi-linear in field intrachain magnetoresistance in the normal state of a quasi-one-dimensional superconductor TaPdTe (4.6 K). Both the…
Nodeless superconductivity in quasi-one-dimensional Nb2PdS5: A muSR study
P. K. Biswas, H. Luetkens, Xiaofeng Xu +4
Muon spin relaxation and rotation (muSR) measurements have been performed to study the superconducting and magnetic properties of Nb2PdS5. Zero-field muSR data show that no sizeabl…
Controllable spin-orbit coupling and its influence on the upper critical field in the chemically doped quasi-one-dimensional NbPdS superconductor
N. Zhou, Xiaofeng Xu, J. R. Wang +8
By systematic chemical substitution of Pt and Ni in the newly-discovered superconductor NbPdS (6 K), we study the evolution of its superconducting properties with…
Coexistence of superconductivity and ferromagnetism in Sr0.5Ce0.5FBiS2
Lin Li, Yuke Li, Yuefeng Jin +9
Through the combination of X-ray diffraction, electrical transport, magnetic susceptibility, and the heat capacity measurements, we studied the effect of Ce doping in the newly dis…
Electronic Nematicity Revealed by Torque Magnetometry in Iron Arsenide EuFe(AsP)
Xiaofeng Xu, W. H. Jiao, N. Zhou +6
Electronic nematics, an electron orientational order which breaks the underlying rotational symmetry, have been observed in iron pnictide superconductors several years after their…
Electronic phase diagram in the new BiS2-based Sr1-xLaxFBiS2 system
Yuke Li, Xi Lin, Lin Li +10
In this paper, we systematically study the electron doping effect in a new BiS2-based system Sr1-xLaxFBiS2(0<x<0.7) through multiple techniques of X-ray diffraction, electrical tra…
Effect of Selenium doping on the superconductivity of NbPd(SSe)
C. Q. Niu, J. H. Yang, Y. K. Li +9
We study the isovalent substitution effect by partially introducing Se on S site in the newly discovered superconductor NbPdS (6 K) whose upper critical field is f…
Evidence for two energy gaps and Fermi liquid behavior in SrPtAs superconductor
Xiaofeng Xu, B. Chen, W. H. Jiao +10
We report a detailed calorimetric study on single crystals of the 5-transition metal pnictide SrPt2As2 with a superconducting critical temperature 5K. The peculiar f…
Superconductivity induced by La doping in Sr1-xLaxFBiS2 system
Xi Lin, Xinxin Ni, Bin Chen +9
Through a combination of X-ray diffraction, electrical transport, magnetic susceptibility, and heat capacity measurements, we report the effect of La doping on Sr in the newly disc…
Superconductivity, charge- or spin-density wave, and metal-nonmetal transition in BaTi(SbBi)O
Hui-Fei Zhai, Wen-He Jiao, Yun-Lei Sun +11
We have performed an isovalent substitution study in a layered titanium oxypnictide system BaTi(SbBi)O (0 0.40) by the measurements of x-ray d…
Charge Density Wave Instability and Soft Phonon in PtP (=Ca, Sr, and La)
Hui Chen, Xiaofeng Xu, Chao Cao +1
The electronic and phonon properties of the platinum pnictide superconductors PtP (=Ca, Sr, and La) were studied using first-principles calculations. The spin-orbit coupl…
Superconducting critical field far above the Pauli limit in one-dimensional LiMoO
J. -F. Mercure, A. F. Bangura, Xiaofeng Xu +5
The upper critical field of purple bronze LiMoO is found to exhibit a large anisotropy, in quantitative agreement with that expected from the observed e…