Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Masatoshi Akazawa"'
Autor:
Hikaru Takeda, Masataka Kawano, Kyo Tamura, Masatoshi Akazawa, Jian Yan, Takeshi Waki, Hiroyuki Nakamura, Kazuki Sato, Yasuo Narumi, Masayuki Hagiwara, Minoru Yamashita, Chisa Hotta
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-8 (2024)
Abstract Complexity of quantum phases of matter is often understood theoretically by using gauge structures, as is recognized by the $${{\mathbb{Z}}}_{2}$$ Z 2 and U(1) gauge theory description of spin liquids in frustrated magnets. Anomalous Hall ef
Externí odkaz:
https://doaj.org/article/f201b13d453c4012a5593419e70e6b78
Autor:
Hikaru Takeda, Jiancong Mai, Masatoshi Akazawa, Kyo Tamura, Jian Yan, Kalimuthu Moovendaran, Kalaivanan Raju, Raman Sankar, Kwang-Yong Choi, Minoru Yamashita
Publikováno v:
Physical Review Research, Vol 4, Iss 4, p L042035 (2022)
We investigate both the longitudinal thermal conductivity (κ_{xx}) and the planar thermal Hall conductivity (κ_{xy}) in the Kitaev spin liquid candidate of the cobalt-based honeycomb antiferromagnet Na_{2}Co_{2}TeO_{6} in a magnetic field (B) appli
Externí odkaz:
https://doaj.org/article/893e1d5712f24c00872e7acb4401712d
Autor:
Masatoshi Akazawa, Hyun-Yong Lee, Hikaru Takeda, Yuri Fujima, Yusuke Tokunaga, Taka-hisa Arima, Jung Hoon Han, Minoru Yamashita
Publikováno v:
Physical Review Research, Vol 4, Iss 4, p 043085 (2022)
Topological transport of fermions is governed by the Chern numbers of the energy bands lying below the Fermi energy. For bosons, e.g., phonons and magnons in a crystal, topological transport is dominated by the Chern number of the lowest energy band
Externí odkaz:
https://doaj.org/article/0b339e055e414af98720e5531da82930
Autor:
Masatoshi Akazawa, Masaaki Shimozawa, Shunichiro Kittaka, Toshiro Sakakibara, Ryutaro Okuma, Zenji Hiroi, Hyun-Yong Lee, Naoki Kawashima, Jung Hoon Han, Minoru Yamashita
Publikováno v:
Physical Review X, Vol 10, Iss 4, p 041059 (2020)
We investigate the thermal-transport properties of the kagome antiferromagnet Cd-kapellasite (Cd-K). We find that a field-suppression effect on the longitudinal thermal conductivity κ_{xx} sets in below approximately 25 K. This field-suppression eff
Externí odkaz:
https://doaj.org/article/c35ad21ac19e4479be50c3678f0297b2
Autor:
Masatoshi Akazawa, Hyun-Yong Lee, Hikaru Takeda, Yuri Fujima, Yusuke Tokunaga, Taka-hisa Arima, Jung Hoon Han, Minoru Yamashita
Topological transports of fermions are governed by the Chern numbers of the energy bands lying below the Fermi energy. For bosons, e.g. phonons and magnons in a crystal, topological transport is dominated by the Chern number of the lowest energy band
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90b098b7eb6f55f3b31065f40051dcbc
Autor:
Toshiro Sakakibara, Ryutaro Okuma, Hyun-Yong Lee, Jung Hoon Han, Naoki Kawashima, Minoru Yamashita, Shunichiro Kittaka, Masatoshi Akazawa, Zenji Hiroi, Masaaki Shimozawa
Publikováno v:
Physical Review X, Vol 10, Iss 4, p 041059 (2020)
We have investigated the thermal-transport properties of the kagome antiferromagnet Cd-kapellasite (Cd-K). We find that a field suppression effect on the longitudinal thermal conductivity k_xx sets in below ~25 K, suggesting a large spin contribution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1828e00422b2c5acb9e7a36adb216c82
Autor:
Masatoshi Akazawa, Hiroyuki Yoshida, Hyun-Yong Lee, Migaku Oda, Naoki Kawashima, Jung Hoon Han, Hayato Doki, Kaori Sugii, Minoru Yamashita, Masaaki Shimozawa
Publikováno v:
Physical Review Letters. 121
A clear thermal Hall signal ($\kappa_{xy}$) was observed in the spin liquid phase of the $S=1/2$ kagom\'e antiferromagnet Ca kapellasite (CaCu$_3$(OH)$_6$Cl$_2\cdot 0.6$H$_2$O). We found that $\kappa_{xy}$ is well reproduced, both qualitatively and q
Autor:
Hajime Ishikawa, Takasada Shibauchi, Zenji Hiroi, Naoki Kawashima, Hyun-Yong Lee, Yuji Matsuda, Masatoshi Akazawa, Jung Hoon Han, Takeshi Yajima, Minoru Yamashita, Masaaki Shimozawa, Migaku Oda, Hiroyuki Yoshida
Publikováno v:
Journal of Physics: Condensed Matter. 32:074001
Searching for the ground state of a kagomé Heisenberg antiferromagnet (KHA) has been one of the central issues of condensed-matter physics, because the KHA is expected to host spin-liquid phases with exotic elementary excitations. Here, we show our
Autor:
Minoru Yamashita, Masatoshi Akazawa, Masaaki Shimozawa, Takasada Shibauchi, Yuji Matsuda, Hajime Ishikawa, Takeshi Yajima, Zenji Hiroi, Migaku Oda, Hiroyuki Yoshida, Hyun-Yong Lee, Jung Hoon Han, Naoki Kawashima
Publikováno v:
Journal of Physics: Condensed Matter; 2/13/2020, Vol. 32 Issue 7, p1-1, 1p
Autor:
Hayato Doki1, Masatoshi Akazawa1, Hyun-Yong Lee1, Jung Hoon Han2, Kaori Sugii1, Masaaki Shimozawa1, Naoki Kawashima1, Migaku Oda3, Hiroyuki Yoshida3, Minoru Yamashita1 my@issp.u-tokyo.ac.jp
Publikováno v:
Physical Review Letters. 8/31/2018, Vol. 121 Issue 9, p1-1. 1p.