98 citations · 637 across the 28 of their papers we have counts for
24 papers · 1 filter
Boost of critical current density near quantum critical points in FeSe-Based superconductors with two superconducting domes
Wei Wei, Qiang Hou, Jiajia Feng +10
Recent studies have identified two superconducting domes in FeSe-based superconductors. It was discovered that each dome is accompanied by a distinct nematic quantum critical point…
Critical Current Density and AC Magnetic Susceptibility of High-quality FeTeSe Superconducting Tapes
Xin Zhou, Wenjie Li, Qiang Hou +12
Iron telluride-selenium superconducting materials, known for their non-toxicity, ease of preparation, simple structure, and high upper critical fields, have attracted much research…
Bulk and surface Dirac states accompanied by two superconducting domes in FeSe-based superconductors
Qiang Hou, Wei Wei, Xin Zhou +8
Recent investigations of FeSe-based superconductors have revealed the presence of two superconducting domes, and suggest possible distinct pairing mechanisms. Two superconducting d…
Intrinsic pinning of FeSeS single crystals probed by torque magnetometry
Nan Zhou, Yue Sun, Q. Hou +14
Intrinsic pinning is caused by natural pinning centers that occur because of the modulation of the order parameter or weak superconducting layers. Early work has shown that intrins…
Unusually weak irradiation effects in anisotropic iron-based superconductor RbCa2Fe4As4F2
Daniele Torsello, Erik Piatti, Michela Fracasso +7
We report on the effects of 3.5 MeV proton irradiation in RbCaFeAsF, an iron-based superconductor with unusual properties in between those of the pnictides and of t…
Observation of non-superconducting phase changes in LuHN
Xiangzhuo Xing, Chao Wang, Linchao Yu +13
The recent report of near-ambient superconductivity in nitrogen doped lutetium hydride has triggered a worldwide fanaticism and raised major questions about the latest claims. An i…
Significant enhancement of critical current density in H+-intercalated FeSe single crystal
Yan Meng, Wei Wei, Xiangzhuo Xing +6
Superconducting transition temperature (Tc) and critical current density (Jc) are two key factors that are not only crucial for probing high-temperature superconducting mechanisms,…
Anomalous second magnetization peak in 12442-type RbCaFeAsF superconductors
Xiaolei Yi, Xiangzhuo Xing, Yan Meng +4
The second magnetization peak (SMP) appears in most superconductors and is crucial for the understanding of vortex physics as well as the application. Although it is well known tha…
Nodal multigap superconductivity in the anisotropic iron-based compound RbCa2Fe4As4F2
Daniele Torsello, Erik Piatti, Giovanni A. Ummarino +5
The 12442 compounds are a recently discovered family of iron-based superconductors, that share several features with the cuprates due to their strongly anisotropic structure, but a…
Protonation-induced discrete superconducting phases in bulk FeSe single crystals
Yan Meng, Xiangzhuo Xing, Xiaolei Yi +10
The superconducting transition temperature, , of FeSe can be significantly enhanced several-fold by applying pressure, electron doping, intercalating spacing layer, and…
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…
Comparative study of superconducting and normal-state anisotropy in FeTeSe superconductors with controlled amounts of interstitial excess Fe
Yue Sun, Yongqiang Pan, Nan Zhou +8
We report a systematic study of the superconducting (SC) and normal-state anisotropy of FeTeSe single crystals with controlled amounts of excess Fe ( = 0…
Disorder-robust high-field superconducting phase of FeSe single crystals
Nan Zhou, Yue Sun, C. Y. Xi +13
When exposed to high magnetic fields, certain materials manifest an exotic superconducting (SC) phase that has attracted considerable attention. A proposed explanation for the orig…
Electronic transport properties and hydrostatic pressure effect of FeSeTe single crystals free of phase separation
Xiangzhuo Xing, Yue Sun, Xiaolei Yi +11
FeSeTe superconductors manifest some intriguing electronic properties depending on the value of . In FeSe single crystal, the nematic phase and Dirac band structur…
Hydrothermal synthesis and complete phase diagram of FeSeS single crystals
Xiaolei Yi, Xiangzhuo Xing, Lingyao Qin +7
We report the successful synthesis of FeSeS single crystals with ranging from 0 to 1 via a hydrothermal method. A complete phase diagram of FeSeS ha…
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…
Quasi-particle evidence for the nematic state above in SrBiSe
Yue Sun, Shunichiro Kittaka, Toshiro Sakakibara +6
In the electronic nematic state, an electronic system has a lower symmetry than the crystal structure of the same system. Electronic nematic states have been observed in various 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…
Highly Anisotropic Superconducting Gap in Nematically Ordered and Tetragonal Phases of FeSeS
Y. Sato, S. Kasahara, T. Taniguchi +5
FeSe has a unique ground state in which superconductivity coexists with a nematic order without long-range magnetic ordering at ambient pressure. Here, to study how the pairing int…
Observation of the anisotropic Dirac cone in the band dispersion of 112-structured iron-based superconductor Ca0.9La0.1FeAs2
Z. T. Liu, X. Z. Xing, M. Y. Li +10
CaFeAs2 is a parent compound of recently discovered 112-type iron-based superconductors. It is predicted to be a staggered intercalation compound that naturally integrates both qua…
Anomalous carrier density independent superconductivity in iron pnictides
W. Zhou, X. Z. Xing, H. J. Zhao +2
Dome-shape superconductivity phase diagram can commonly be observed in cuprate and iron-based systems via tuning parameters such as charge carrier doping, pressure, bond angle, and…
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…
Anisotropic Superconductivity of Ca1-xLaxFeAs2 (x ~ 0.18) Single Crystal
Wei Zhou, Jincheng Zhuang, Feifei Yuan +4
Anisotropic superconducting properties including the upper critical field Hc2, thermal activation energy U0, and critical current density Jc are systematically studied in a large C…
Possible Phase Separation and Transport Properties in Large Superconducting Ca0.77La0.18Fe0.90As2 Crystals
W. Zhou, J. C. Zhuang, F. F. Yuan +4
We synthesized large superconducting single crystal Ca0.77La0.18Fe0.90As2 ('112' type) of 2 millimeter size. Scanning electron microscopy (SEM) measurements revealed that bright an…