Zobrazeno 1 - 10
of 143
pro vyhledávání: '"Yoshimitsu Kohama"'
Autor:
Zhuo Yang, Christophe Marcenat, Sunghoon Kim, Shusaku Imajo, Motoi Kimata, Toshihiro Nomura, Albin Muer, Duncan K. Maude, Fumitoshi Iga, Thierry Klein, Debanjan Chowdhury, Yoshimitsu Kohama
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-7 (2024)
Abstract The mixed-valence compound YbB12 displays paradoxical quantum oscillations in electrical resistivity and magnetic torque in a regime with a well-developed insulating charge gap and in the absence of an electronic Fermi surface. However, sign
Externí odkaz:
https://doaj.org/article/955f35a48a1245c5bf7276078fbc5e20
Autor:
Zhuo Yang, Benoît Fauqué, Toshihiro Nomura, Takashi Shitaokoshi, Sunghoon Kim, Debanjan Chowdhury, Zuzana Pribulová, Jozef Kačmarčík, Alexandre Pourret, Georg Knebel, Dai Aoki, Thierry Klein, Duncan K. Maude, Christophe Marcenat, Yoshimitsu Kohama
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Abstract Quantum oscillation phenomenon is an essential tool to understand the electronic structure of quantum matter. Here we report a systematic study of quantum oscillations in the electronic specific heat C el in natural graphite. We show that th
Externí odkaz:
https://doaj.org/article/fdcbb46e8a274bff9dfff8f96253cf72
Autor:
Kifu Kurokawa, Shunsuke Isono, Yoshimitsu Kohama, So Kunisada, Shiro Sakai, Ryotaro Sekine, Makoto Okubo, Matthew D. Watson, Timur K. Kim, Cephise Cacho, Shik Shin, Takami Tohyama, Kazuyasu Tokiwa, Takeshi Kondo
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-9 (2023)
Abstract The currently established electronic phase diagram of cuprates is based on a study of single- and double-layered compounds. These CuO2 planes, however, are directly contacted with dopant layers, thus inevitably disordered with an inhomogeneo
Externí odkaz:
https://doaj.org/article/9c5623e671c64a4c81b4d2dacfec1c86
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-7 (2023)
Abstract Exploring new topological phenomena and functionalities induced by strong electron correlation has been a central issue in modern condensed-matter physics. One example is a topological insulator (TI) state and its functionality driven by the
Externí odkaz:
https://doaj.org/article/27869f07927d461fb75419ace18a5d7f
Autor:
Hoil Kim, Jong Mok Ok, Seyeong Cha, Bo Gyu Jang, Chang Il Kwon, Yoshimitsu Kohama, Koichi Kindo, Won Joon Cho, Eun Sang Choi, Youn Jung Jo, Woun Kang, Ji Hoon Shim, Keun Su Kim, Jun Sung Kim
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)
Clear electronic transport signatures of topological nodal-line semimetals have been lacking due to their complex electronic structure and the presence of topologically trivial states. Kim et al. demonstrate that the quantum transport response in sli
Externí odkaz:
https://doaj.org/article/9f270e73d77d4072a1319a2f7c7996d6
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-6 (2022)
The famous Fulde–Ferrell–Larkin– Ovchinnikov (FFLO) state is a spatially-modulated superconducting state with a predicted spatial anisotropy, but this anisotropy has never been experimentally verified. Here, the authors present ultrasound evide
Externí odkaz:
https://doaj.org/article/ac81cd7220884a14b75d1cee46d93ea9
Autor:
Shingo Kaneta-Takada, Yuki K. Wakabayashi, Yoshiharu Krockenberger, Toshihiro Nomura, Yoshimitsu Kohama, Sergey A. Nikolaev, Hena Das, Hiroshi Irie, Kosuke Takiguchi, Shinobu Ohya, Masaaki Tanaka, Yoshitaka Taniyasu, Hideki Yamamoto
Publikováno v:
npj Quantum Materials, Vol 7, Iss 1, Pp 1-12 (2022)
Abstract High-mobility two-dimensional carriers originating from surface Fermi arcs in magnetic Weyl semimetals are highly desired for accessing exotic quantum transport phenomena and for topological electronics applications. Here, we demonstrate hig
Externí odkaz:
https://doaj.org/article/543a00274e01498294525e5a1b30f552
Autor:
Junseong Song, Byung Cheol Park, Kyung Ik Sim, Joonho Bang, Sunghun Kim, Zhuo Yang, Yoshimitsu Kohama, Yeongkwan Kim, Sung Wng Kim
Publikováno v:
npj Quantum Materials, Vol 6, Iss 1, Pp 1-6 (2021)
Abstract Topological Dirac semimetals have emerged as a platform to engineer Berry curvature with time-reversal symmetry breaking, which allows to access diverse quantum states in a single material system. It is of interest to realize such diversity
Externí odkaz:
https://doaj.org/article/31bb0c4bed2e46f0b2e9abad2513e0dd
Autor:
Stephan Allenspach, Pascal Puphal, Joosep Link, Ivo Heinmaa, Ekaterina Pomjakushina, Cornelius Krellner, Jakob Lass, Gregory S. Tucker, Christof Niedermayer, Shusaku Imajo, Yoshimitsu Kohama, Koichi Kindo, Steffen Krämer, Mladen Horvatić, Marcelo Jaime, Alexander Madsen, Antonietta Mira, Nicolas Laflorencie, Frédéric Mila, Bruce Normand, Christian Rüegg, Raivo Stern, Franziska Weickert
Publikováno v:
Physical Review Research, Vol 3, Iss 2, p 023177 (2021)
Classical and quantum phase transitions (QPTs), with their accompanying concepts of criticality and universality, are a cornerstone of statistical thermodynamics. An excellent example of a controlled QPT is the field-induced ordering of a gapped quan
Externí odkaz:
https://doaj.org/article/f05d110fb7504a9d94b099e9e4131282
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033257 (2020)
Zeeman spectra of the R lines of ruby (Cr^{3+}: α-Al_{2}O_{3}) were studied in ultrahigh magnetic fields up to 230 T by magnetophotoluminescence measurements. The observed Zeeman patterns exhibit nonlinear behaviors above 100 T, evidencing the break
Externí odkaz:
https://doaj.org/article/fead7540e1554f19849c0306f53b0574