Takao Watanabe

activity

20242026

collaborators

6 papers

cond-mat.supr-con2026

Discriminating superconducting fluctuations from the pseudogap in Bi $_{2}$ Sr $_{2}$ Ca $_{n - 1}$ Cu $_{n}$ O $_{2 n + 4 + δ} (n = 2, 3)$ : A magnetotransport study

Shunpei Yamaguchi, Nae Sasaki, Shintaro Adachi +13

Understanding the normal state is essential for uncovering the mechanism of high- $T_{c}$ superconductivity. We investigate magnetotransport in Bi $_{2}$ Sr $_{2}$ CaCu $_{2}$ O $_{8 + δ}$ and Bi$_2…

cond-mat.supr-con2026

Probing the Meissner effect in single crystals of $B i_{2} S r_{2} C a_{2} C u_{3} O_{10 + I^´}$ via wide-field quantum microscopy under high pressure

Masahiro Ohkuma, Ryo Matsumoto, Shintaro Adachi +5

We investigated the pressure dependence of the superconducting transition temperature ( $T_{c}$ ) in optimally doped Bi $_{2}$ Sr $_{2}$ Ca $_{2}$ Cu $_{3}$ O $_{10 + I^´}$ (Bi-2223) single crystals…

cond-mat.str-el2025

Proximity-Induced Nodal Metal in an Extremely Underdoped CuO $_{2}$ Plane in Triple-Layer Cuprates

Shin-ichiro Ideta, Shintaro Adachi, Takashi Noji +15

ARPES studies have established that the high- $T_{c}$ cuprates with single and double CuO $_{2}$ layers evolve from the Mott insulator to the pseudogap state with a Fermi arc, on which t…

cond-mat.supr-con2025

Topology meets time-reversal symmetry breaking in FeSe $_{1 - x}$ Te $_{x}$ superconductor

M. Roppongi, Y. Cai, K. Ogawa +21

Time-reversal symmetry breaking (TRSB) in magnetic topological insulators induces a Dirac gap in the topological surface state (TSS), leading to exotic phenomena such as the quantu…

cond-mat.supr-con2024

Effects of vortex and antivortex excitations in underdoped Bi $_{2}$ Sr $_{2}$ Ca $_{2}$ Cu $_{3}$ O $_{10 + I^´}$ bulk single crystals

Takao Watanabe, Kenta Kosugi, Nae Sasaki +5

The observance of vortex and anti-vortex effects in bulk crystals can prove the existence of phase-disordered superconductivity in the bulk. To gain insights into the mechanisms th…

cond-mat.supr-con2024

Correlation between $T_{c}$ and the Pseudogap Observed in the Optical Spectra of High $T_{c}$ Superconducting Cuprates

Setsuko Tajima, Yuhta Itoh, Katsuya Mizutamari +6

We studied the temperature dependences of the optical spectra for optimally and underdoped Bi $_{2}$ Sr $_{2}$ Ca $_{2}$ Cu $_{3}$ O $_{10 + z}$ single crystals. Similarly to the other cuprates' case…

Discriminating superconducting fluctuations from the pseudogap in Bi2​Sr2​Can−1​Cun​O2n+4+δ​(n=2,3): A magnetotransport study

Probing the Meissner effect in single crystals of Bi2​Sr2​Ca2​Cu3​O10+I^´​ via wide-field quantum microscopy under high pressure

Proximity-Induced Nodal Metal in an Extremely Underdoped CuO2​ Plane in Triple-Layer Cuprates

Topology meets time-reversal symmetry breaking in FeSe1−x​Tex​ superconductor

Effects of vortex and antivortex excitations in underdoped Bi2​Sr2​Ca2​Cu3​O10+I^´​ bulk single crystals