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 …

BiS2-based layered superconductors have attracted considerable interest owing to the
relatively large spin–orbit coupling of bismuth 6 p orbitals, the strong coupling nature by …

We investigate the superconducting-gap anisotropy in one of the recently discovered BiS 2-
based superconductors, NdO 0.71 F 0.29 BiS 2 (T c∼ 5 K), using laser-based angle …

We have investigated the Se isotope effect in the layered bismuth chalcogenide (BiC h 2-
based) superconductor La O 0.6 F 0.4 Bi (S, Se) 2 with Se 76 and Se 80. For all examined …

Centrosymmetric compounds with local inversion symmetry breaking have tremendously
interesting and intriguing physical properties. In this study, we focus on a BiCh2-based (Ch …

Superconducting behavior with exotic characteristics is often observed in materials with a
layered two-dimensional crystal structure. Low dimensionality affects the electronic structure …

Recently, thermal switching has been extensively studied because it is a key component for
thermal management in electronic devices. Here, we show a huge magneto-thermal …

In this study, the superconducting gap symmetry of LaO 0.5 F 0.5 BiSSe is elucidated
through specific heat measurements with one single crystal of LaO 0.5 F 0.5 BiSSe. A clear …

We report transport properties for layered BiCh2-based (Ch= S, Se) superconductors LaO1−
x F x BiS2− y Se y (x= 0.2, 0.5, y= 0–1.05) and the observation of possible weak …

We report the sulfur isotope effect on transition temperature (T c) in a BiS 2-based
superconductor Bi 4 O 4 S 3. Polycrystalline samples of Bi 4 O 4 S 3 were prepared using 32 …