Material Development and Physical Properties of BiS2-Based Layered Compounds

Y Mizuguchi - Journal of the Physical Society of Japan, 2019 - journals.jps.jp
In 2012, we discovered superconductivity in Bi4O4S3 and LaO1− x F x BiS2, whose crystal
structures are composed of alternate stacks of a BiS2-type conduction layer and a blocking …

Origin of extremely large magnetoresistance in the candidate type-II Weyl semimetal MoTe2−x

S Lee, J Jang, SI Kim, SG Jung, J Kim, S Cho… - Scientific reports, 2018 - nature.com
The recent observation of extremely large magnetoresistance (MR) in the transition-metal
dichalcogenide MoTe2 has attracted considerable interest due to its potential technological …

Pressure induced superconductivity bordering a charge-density-wave state in NbTe4 with strong spin-orbit coupling

X Yang, Y Zhou, M Wang, H Bai, X Chen, C An… - Scientific reports, 2018 - nature.com
Transition-metal chalcogenides host various phases of matter, such as charge-density wave
(CDW), superconductors, and topological insulators or semimetals. Superconductivity and …

Evidence for two distinct superconducting phases in under pressure

CY Guo, Y Chen, M Smidman, SA Chen, WB Jiang… - Physical Review B, 2015 - APS
We present a pressure study of the electrical resistivity, ac magnetic susceptibility, and
powder x-ray diffraction (XRD) of the recently discovered BiS 2-based superconductor …

Superconductivity enhanced by Se doping in Eu3Bi2 (S, Se) 4F4

P Zhang, HF Zhai, ZJ Tang, L Li, YK Li… - Europhysics …, 2015 - iopscience.iop.org
We investigated the negative-chemical-pressure effect of Eu 3 Bi 2 S 4− x Se x F 4 (0≤ x≤
2.0) by the partial substitution of S with Se. The crystalline lattice substantially expands as …

Unusual Mixed Valence of Eu in Two MaterialsEuSr2Bi2S4F4 and Eu2SrBi2S4F4: Mössbauer and X-ray Photoemission Spectroscopy Investigations

Z Haque, GS Thakur, R Parthasarathy… - Inorganic …, 2017 - ACS Publications
We have synthesized two new Eu-based compounds, EuSr2Bi2S4F4 and Eu2SrBi2S4F4,
which are derivatives of Eu3Bi2S4F4, an intrinsic superconductor with T c= 1.5 K. They …

Pressure-induced Superconductivity in BiS2-based Superconductors Eu2SrBi2S2.5Se1.5F4

K Ishigaki, J Gouchi, K Torizuka… - Journal of the Physical …, 2024 - journals.jps.jp
BiS2-based superconductor Eu2SrBi2S2. 5Se1. 5F4 has been investigated to clarify
between T c and crystal structure under high-pressure. The electrical resistivity by Cubic …

Discovery of a Superconductor Bi5O4S3Cl Containing the Unique BiS3 Layer

Y Yang, X Fan, J Liu, C Cao, Z Liu, J Deng… - Advanced …, 2023 - Wiley Online Library
The BiS2‐based layered superconductors with structures similar to those of cuprates and
iron‐based superconductors have stimulated much research interest. Here, a new …

Strong Bilayer Coupling Induced by the Symmetry Breaking in the Monoclinic Phase of BiS2-Based Superconductors

M Ochi, R Akashi, K Kuroki - Journal of the Physical Society of Japan, 2016 - journals.jps.jp
We perform first-principles band structure calculations for the tetragonal and monoclinic
structures of LaO0. 5F0. 5BiS2. We find that the Bi 6 px, y bands on two BiS2 layers exhibit a …

Electronic structure of self-doped layered material revealed by x-ray absorption spectroscopy and photoelectron spectromicroscopy

E Paris, T Sugimoto, T Wakita, A Barinov, K Terashima… - Physical Review B, 2017 - APS
We have studied the electronic structure of Eu 3 F 4 Bi 2 S 4 using a combination of Eu L 3-
edge x-ray absorption spectroscopy (XAS) and space-resolved angle-resolved …