Zobrazeno 1 - 10
of 925
pro vyhledávání: '"MATSUMURA, Takeshi"'
Autor:
Matsumura, Takeshi, Tabata, Chihiro, Kaneko, Koji, Nakao, Hironori, Kakihana, Masashi, Hedo, Masato, Nakama, Takao, Ōnuki, Yoshichika
We investigated the magnetic helicity of the triple-$q$ magnetic structure of the triangular skyrmion lattice in the ``A-phase" of EuPtSi for a magnetic field along the [111] axis by resonant x-ray diffraction using a circularly polarized beam. We sh
Externí odkaz:
http://arxiv.org/abs/2405.04362
Autor:
Matsumura, Takeshi, Kurauchi, Kenshin, Tsukagoshi, Mitsuru, Higa, Nonoka, Nakao, Hironori, Kakihana, Masashi, Hedo, Masato, Nakama, Takao, Ōnuki, Yoshichika
Publikováno v:
Journal of the Physical Society of Japan, 93, 074705 (2024)
Magnetic skyrmions are particle-like spin-swirling objects ubiquitously realized in magnets. They are topologically stable chiral kinks composed of multiple modulation waves of spiral spin structures, where the helicity of each spiral is usually sele
Externí odkaz:
http://arxiv.org/abs/2306.14767
Autor:
Kurauchi, Kenshin, Matsumura, Takeshi, Tsukagoshi, Mitsuru, Higa, Nonoka, Kakihana, Masashi, Hedo, Masato, Nakama, Takao, Ōnuki, Yoshichika
The magnetic helicities of the cycloidal ordering in EuIrGe$_3$, with a noncentrosymmetric tetragonal structure, have been studied by circularly polarized resonant X-ray diffraction. It is shown that the helicity of each cycloidal domain is uniquely
Externí odkaz:
http://arxiv.org/abs/2306.12669
Autor:
Nakamura, Shota, Matsumura, Takeshi, Ohashi, Kazuma, Suzuki, Hiroto, Tsukagoshi, Mitsuru, Kurauchi, Kenshin, Nakao, Hironori, Ohara, Shigeo
We have performed magnetic susceptibility, magnetization, and specific heat measurements on a chiral magnet GdNi$_3$Ga$_9$, belonging to the trigonal space group $R32$ (\#155). A magnetic phase transition takes place at $T_{\rm N}$ = 19.5 K. By apply
Externí odkaz:
http://arxiv.org/abs/2306.12648
Autor:
Tsukagoshi, Mitsuru, Kishida, Suguru, Kurauchi, Kenshin, Ito, Daichi, Kubo, Koya, Matsumura, Takeshi, Ikeda, Yoichi, Nakamura, Shota, Ohara, Shigeo
Crystal field level scheme of a uniaxial chiral helimagnet YbNi$_3$Al$_9$, exhibiting a chiral magnetic soliton lattice state by Cu substitution for Ni, has been determined by inelastic neutron scattering. The ground and the first excited doublets ar
Externí odkaz:
http://arxiv.org/abs/2303.12661
Autor:
Matsumura, Takeshi, Tsukagoshi, Mitsuru, Ueda, Yoshihisa, Higa, Nonoka, Nakao, Akiko, Kaneko, Koji, Kakihana, Masashi, Hedo, Masato, Nakama, Takao, Ōnuki, Yoshichika
Successive magnetic phase transitions at $T_{\text{N}}$=12.2 K, $T_{\text{N}}^{\;\prime}$=7.0 K, and $T_{\text{N}}^{\;*}$=5.0 K in EuIrGe$_3$, an intermetallic compound with a body centered tetragonal lattice belonging to a polar space group $I4mm$,
Externí odkaz:
http://arxiv.org/abs/2206.06596
Autor:
Kawamura, Yukihiro, Ikeda, Kakeru, Dalan, Alisha Nurshafiqah Binti Amat, Hayashi, Junichi, Takeda, Keiki, Sekine, Chihiro, Matsumura, Takeshi, Gouchi, Jun, Uwatoko, Yoshiya, Tomita, Takahiro, Takahashi, Hiroki, Tanida, Hiroshi
X-ray powder diffraction and electrical resistivity measurements were performed on the tetragonal compound CeCoSi under pressure to elucidate the phase boundary of the pressure-induced structural transition and the change in the 4$f$ electronic state
Externí odkaz:
http://arxiv.org/abs/2203.16817
Autor:
Matsumura, Takeshi, Kishida, Suguru, Tsukagoshi, Mitsuru, Kawamura, Yukihiro, Nakao, Hironori, Tanida, Hiroshi
Publikováno v:
J. Phys. Soc. Jpn. 91, 064704 (2022)
We have performed X-ray diffraction experiments on a single crystalline CeCoSi to investigate the unresolved ordered phase below $T_0 \sim 12$ K. We have discovered that a triclinic lattice distortion takes place below $T_0$, which is further modifie
Externí odkaz:
http://arxiv.org/abs/2203.03879
Autor:
Kousaka, Yusuke, Iwasaki, Satoshi, Sayo, Taisei, Tanida, Hiroshi, Matsumura, Takeshi, Araki, Shingo, Akimitsu, Jun, Togawa, Yoshihiko
We performed a crystal growth to obtain chirality-controlled enantiopure crystals using a laser-diode-heated floating zone (LDFZ) method with a composition-gradient feed rod. It has been argued that the crystal handedness of $T$Si ($T$ : transition m
Externí odkaz:
http://arxiv.org/abs/2201.09431
Publikováno v:
Phys. Rev. B 105, 014428 (2022)
Successive phase transitions in a rare-earth monoaxial chiral magnet DyNi$_3$Ga$_{9}$ have been investigated by resonant x-ray diffraction. Magnetic dipole and electric quadrupole degrees of freedom arising from the large angular moment of $J=15/2$,
Externí odkaz:
http://arxiv.org/abs/2201.05531