Zobrazeno 1 - 10
of 1 019
pro vyhledávání: '"Kimata M"'
Autor:
Tokiwa, Y., Opletal, . P., Sakai, H., Kambe, S., Yamamoto, E., Kimata, M., Awaji, S., Sasaki, T., Aoki, D., Haga, Y., Tokunaga, Y.
Publikováno v:
Phys. Rev. B 109, L140502 (2024)
The normal-conducting state of the superconductor UTe$_2$ is studied by entropy analysis for magnetic fields along the $b$-axis, obtained from magnetization using the relation $(\partial M/\partial T)_B=(\partial S/\partial B)_T$. We observe a strong
Externí odkaz:
http://arxiv.org/abs/2402.16258
Autor:
Tokiwa, Y., Kambe, H. Sakai. S., Opletal, P., Yamamoto, E., Kimata, M., Awaji, S., Sasaki, T., Yanase, Y., Haga, Y., Tokunaga, Y.
Publikováno v:
Phys. Rev. B 108, 144502 (2023)
The vortex dynamics in the spin-triplet superconductor, UTe$_2$, are studied by measuring the DC electrical resistivity with currents along the $a$-axis under magnetic fields along the $b$-axis. Surprisingly, we have discovered an island region of lo
Externí odkaz:
http://arxiv.org/abs/2305.17840
Autor:
Funada, S., Ishikawa, Y., Kimata, M., Hayashi, K., Sano, T., Sugi, K., Fujii, Y., Mitsudo, S., Shiota, Y., Ono, T., Moriyama, T.
THz magnetization dynamics is a key property of antiferromagnets as well as ferrimagnets that could harness the THz forefront and spintronics. While most of the present THz measurement techniques are for bulk materials whose sensitivities rely on the
Externí odkaz:
http://arxiv.org/abs/2303.02639
Autor:
Matsuyama, N., Nomura, T., Imajo, S., Nomoto, T., Arita, R., Sudo, K., Kimata, M., Khanh, N. D., Takagi, R., Tokura, Y., Seki, S., Kindo, K., Kohama, Y.
We have performed magnetic torque and resistivity measurements on a centrosymmetric skyrmion-host GdRu2Si2, in which the dominant magnetic interaction leading to skyrmion formation is under debate. We observe both the de Haas-van Alphen and Shubnikov
Externí odkaz:
http://arxiv.org/abs/2212.12280
Autor:
Tokiwa, Y., Opletal, P., Sakai, H., Kubo, K., Yamamoto, E., Kambe, S., Kimata, M., Awaji, S., Sasaki, T., Aoki, D., Tokunaga, Y., Haga, Y.
Influence of metamagnetism on superconductivity is studied for the field along an easy $a$-axis by AC magnetic susceptibility, magnetization, and magnetocaloric effect (MCE) in UTe$_2$. The improvement of crystal quality leads to an upward curvature
Externí odkaz:
http://arxiv.org/abs/2210.11769
Autor:
Sakai, H., Tokiwa, Y., Opletal, P., Kimata, M., Awaji, S., Sasaki, T., Aoki, D., Kambe, S., Tokunaga, Y., Haga, Y.
Publikováno v:
Phys. Rev. Lett. 130, 196002 (2023)
The superconducting (SC) phase diagram in uranium ditelluride is explored under magnetic fields ($H$) along the hard magnetic b-axis using a high-quality single crystal with $T_{\rm c} = 2.1$ K. Simultaneous electrical resistivity and AC magnetic sus
Externí odkaz:
http://arxiv.org/abs/2210.05909
Autor:
Kinjo, K., Fujibayashi, H., Kitagawa, S., Ishida, K., Tokunaga, Y., Sakai, H., Kambe, S., Nakamura, A., Shimizu, Y., Homma, Y., Li, D. X., Honda, F., Aoki, D., Hiraki, K., Kimata, M., Sasaki, T.
Publikováno v:
Physical Review B 107 L060502 (2023)
UTe2 is a recently discovered spin-triplet superconductor. One of the characteristic features of UTe2 is a magnetic field (H)-boosted superconductivity above 16 T when H is applied exactly parallel to the b axis. To date, this superconducting (SC) st
Externí odkaz:
http://arxiv.org/abs/2206.02444
Autor:
Idzuchi, H., Kimata, M., Okamoto, S., Laurell, P., Mohanta, N., Cothrine, M., Nagler, S. E., Mandrus, D., Banerjee, A., Chen, Y. P.
Alpha-phase (a-) RuCl_3 has emerged as a prime candidate for a quantum spin liquid (QSL) that promises exotic quasiparticles relevant for fault-tolerant quantum computation. Here, we report spin sensitive transport measurements to probe spin correlat
Externí odkaz:
http://arxiv.org/abs/2204.03158
Publikováno v:
Phys. Rev. Lett. 126, 157402 (2021)
X-ray magnetic circular dichroism (XMCD) is generally not observed for antiferromagnetic (AFM) states because XMCD signals from the antiparallelly coupled spins cancel each other. In this letter, we theoretically show the presence of an XMCD signal f
Externí odkaz:
http://arxiv.org/abs/2011.12773
Publikováno v:
Phys. Rev. B 98, 024416 (2018)
At the interface between a nonmagnetic metal (NM) and a ferromagnetic insulator (FI) spin current can interact with the magnetization, leading to a modulation of the spin current. The interfacial exchange field at these FI-NM interfaces can be probed
Externí odkaz:
http://arxiv.org/abs/1805.02433