Zobrazeno 1 - 10
of 182
pro vyhledávání: '"Kobayashi, Tatsuo C"'
Topological semimetals are intriguing targets for exploring unconventional physical properties of massless fermions. Among them, nodal line or nodal ring semimetals have attracted attention for their unique one-dimensional band contact in momentum sp
Externí odkaz:
http://arxiv.org/abs/2404.10192
Autor:
Takahashi, Hidefumi, Sasaki, Tomohiro, Nakano, Akitoshi, Akiba, Kazuto, Takahashi, Masayuki, Mayo, Alex H., Onose, Masaho, Kobayashi, Tatsuo C., Ishiwata, Shintaro
Given the rarity of metallic systems that exhibit ferroelectric-like transitions, it is apparently challenging to find a system that simultaneously possesses superconductivity and ferroelectric-like structural instability. Here, we report the observa
Externí odkaz:
http://arxiv.org/abs/2312.10354
Autor:
Akiba, Kazuto, Kobayashi, Tatsuo C.
We investigated the electronic structure and superconducting properties of single-crystalline LaCuSb$_2$. The resistivity, magnetization, and specific heat measurements showed that LaCuSb$_2$ is a bulk superconductor. The observed Shubnikov-de Haas o
Externí odkaz:
http://arxiv.org/abs/2305.15619
Autor:
Takahashi, Hidefumi, Akiba, Kazuto, Takahashi, Masayuki, Mayo, Alex H., Ochi, Masayuki, Kobayashi, Tatsuo C., Ishiwata, Shintaro
Publikováno v:
J. Phys. Soc. Jpn. 92, 013701 (2023)
We report the observation of superconductivity with multiple magnetic ordering and Rashba-type spin-orbit coupling in a layered polar semimetal EuAuBi. Magnetic transition is observed at 4 K, followed by a superconducting transition at 2.2 K, which i
Externí odkaz:
http://arxiv.org/abs/2212.00925
Publikováno v:
Phys. Rev. B 106, L161113 (2022)
We discover superconductivity (SC) in LaAgSb$_2$ at ambient pressure and its close correlation with a charge density wave (CDW) under pressure. The superconducting transition temperature ($T_c$) exhibits a sharp peak at the CDW critical pressure of 3
Externí odkaz:
http://arxiv.org/abs/2210.07175
Autor:
Manago, Masahiro, Motoyama, Gaku, Nishigori, Shijo, Fujiwara, Kenji, Kinjo, Katsuki, Kitagawa, Shunsaku, Ishida, Kenji, Akiba, Kazuto, Araki, Shingo, Kobayashi, Tatsuo C., Harima, Hisatomo
Publikováno v:
J. Phys. Soc. Jpn. 91, 113701 (2022)
The magnetic structure of antiferromagnetic $\alpha$-Mn has been unclarified for almost 70 years since its magnetism was discovered. We measured the zero-field nuclear magnetic resonance spectra of antiferromagnetic $\alpha$-Mn to obtain further insi
Externí odkaz:
http://arxiv.org/abs/2210.02754
Publikováno v:
Phys. Rev. B 105, 035108 (2022)
Square-net-layered materials have attracted attention as an extended research platform of Dirac fermions and of exotic magneto-transport phenomena. In this study, we investigated the magneto-transport properties of LaAgSb$_2$, which has Sb-square-net
Externí odkaz:
http://arxiv.org/abs/2112.07095
Autor:
Miyajima, Mizuki, Astuti, Fahmi, Fukuda, Takahito, Kodani, Masashi, Iida, Shinsuke, Asai, Shinichiro, Matsuo, Akira, Masuda, Takatsugu, Kindo, Koichi, Hasegawa, Takumi, Kobayashi, Tatsuo C, Nakano, Takehito, Watanabe, Isao, Kambe, Takashi
Publikováno v:
Phys. Rev. B 104, 140402 (2021)
We have investigated the low-temperature magnetism of sodium superoxide (NaO$_{2}$), in which spin, orbital, and lattice degrees of freedom are closely entangled. The magnetic susceptibility shows anomalies at $T_{1}=220$ K and $T_{2}=190$ K, which c
Externí odkaz:
http://arxiv.org/abs/2107.01783
Publikováno v:
Phys. Rev. B 103, 085134 (2021)
We comprehensively studied the magnetotransport properties of LaAgSb$_2$ under high pressure up to 4 GPa, which showed unique successive charge density wave (CDW) transitions at $T_{CDW1}\sim 210$ K and $T_{CDW2}\sim 190$ K at ambient pressure. With
Externí odkaz:
http://arxiv.org/abs/2102.04612
Autor:
Tajima, Satoshi, Hirai, Daigorou, Kinoshita, Yuto, Tokunaga, Masashi, Akiba, Kazuto, Kobayashi, Tatsuo C., Hirose, Hishiro T., Hiroi, Zenji
Publikováno v:
J. Phys. Soc. Jpn., Vol.89, No.11, Article ID: 114711 (2020)
The 5d pyrochlore oxide Cd2Re2O7 exhibits successive phase transitions from a cubic pyrochlore structure (phase I) to a tetragonal structure without inversion symmetry below Ts1 of ~200 K (phase II) and further to another noncentrosymmetric tetragona
Externí odkaz:
http://arxiv.org/abs/2009.14443