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 …

Direct observation of spin-layer locking by local Rashba effect in monolayer semiconducting PtSe2 film

W Yao, E Wang, H Huang, K Deng, M Yan… - Nature …, 2017 - nature.com
The generally accepted view that spin polarization in non-magnetic solids is induced by the
asymmetry of the global crystal space group has limited the search for spintronics materials …

Electric control of Dirac quasiparticles by spin-orbit torque in an antiferromagnet

L Šmejkal, J Železný, J Sinova, T Jungwirth - Physical review letters, 2017 - APS
Spin orbitronics and Dirac quasiparticles are two fields of condensed matter physics initiated
independently about a decade ago. Here we predict that Dirac quasiparticles can be …

Unconventional superconductivity in bilayer transition metal dichalcogenides

CX Liu - Physical review letters, 2017 - APS
Bilayer transition metal dichalcogenides (TMDs) belong to a class of materials with two
unique features, the coupled spin-valley-layer degrees of freedom and the crystal structure …

Direct evidence of hidden local spin polarization in a centrosymmetric superconductor LaO0.55 F0.45BiS2

SL Wu, K Sumida, K Miyamoto, K Taguchi… - Nature …, 2017 - nature.com
Conventional Rashba spin polarization is caused by the combination of strong spin–orbit
interaction and spatial inversion asymmetry. However, Rashba–Dresselhaus-type spin-split …

Spontaneous Valley Polarization Caused by Crystalline Symmetry Breaking in Nonmagnetic LaOMX2 Monolayers

Y Xu, Y Wang, S Wang, S Yu, B Huang, Y Dai… - Nano Letters, 2022 - ACS Publications
In order to achieve valley polarization, breaking the time-reversal symmetry in two-
dimensional hexagonal lattices with inversion asymmetry is the heart of current valleytronic …

Phonon helicity induced by electronic Berry curvature in Dirac materials

LH Hu, J Yu, I Garate, CX Liu - Physical review letters, 2021 - APS
In two-dimensional insulators with time-reversal (TR) symmetry, a nonzero local Berry
curvature of low-energy massive Dirac fermions can give rise to nontrivial spin and charge …

Theoretical aspects of the study on the thermoelectric properties of pnictogen-dichalcogenide layered compounds

M Ochi, H Usui, K Kuroki - Journal of the Physical Society of Japan, 2019 - journals.jps.jp
Recent experimental studies revealed that Bi Ch 2 (Ch= S, Se) layered compounds, which
have been well known as superconductors, also exhibit high thermoelectric performance …

Polytypism in -type compounds based on different three-dimensional stacking sequences of two-dimensional layers

Q Liu, X Zhang, A Zunger - Physical Review B, 2016 - APS
LaOBi S 2-type materials have drawn much attention recently because of various interesting
physical properties, such as low-temperature superconductivity, hidden spin polarization …

Valley polarization caused by crystalline symmetry breaking

Y Wang, W Wei, F Li, X Lv, B Huang, Y Dai - Materials Horizons, 2021 - pubs.rsc.org
In two-dimensional (2D) hexagonal lattices with inversion asymmetry, time-reversal (T)
connected valleys are at the center of current valleytronic research. In order to trigger valley …