Zobrazeno 1 - 10
of 963
pro vyhledávání: '"Kohama Y"'
Autor:
Suetsugu, S., Asaba, T., Ikemori, S., Sekino, Y., Kasahara, Y., Totsuka, K., Li, B., Zhao, Y., Li, Y., Kohama, Y., Matsuda, Y.
Quantum spin liquids (QSLs) represent an exotic quantum many-body state characterized by the suppression of long-range magnetic order due to strong quantum fluctuations. The kagome spin-1/2 antiferromagnet (AFM) is a prime candidate for realizing QSL
Externí odkaz:
http://arxiv.org/abs/2407.16208
Autor:
Gen, M., Hirai, D., Morita, K., Kogane, S., Matsuyama, N., Yajima, T., Kawamura, M., Deguchi, K., Matsuo, A., Kindo, K., Kohama, Y., Hiroi, Z.
The spin-1/2 Heisenberg antiferromagnet on an anisotropic triangular lattice (ATL) is an archetypal spin system hosting exotic quantum magnetism and dimensional crossover. However, the progress in experimental research on this field has been limited
Externí odkaz:
http://arxiv.org/abs/2311.06040
We developed a resistance measurement using radio frequency reflection to investigate the electrical transport characteristics under destructive pulsed magnetic fields above 100 T. A homemade flexible printed circuit for a sample stage reduced the no
Externí odkaz:
http://arxiv.org/abs/2306.16277
Autor:
Gen, M., Ishikawa, H., Miyake, A., Yajima, T., Jeschke, H. O., Sagayama, H., Ikeda, A., Matsuda, Y. H., Kindo, K., Tokunaga, M., Kohama, Y., Kurumaji, T., Tokunaga, Y., Arima, T.
Publikováno v:
Phys. Rev. Mater. 7, 104404 (2023)
We investigate the crystallographic and magnetic properties of a chromium-based thiospinel CuGaCr$_{4}$S$_{8}$. From a synchrotron x-ray diffraction experiment and structural refinement, Cu and Ga atoms are found to occupy the tetrahedral $A$-sites i
Externí odkaz:
http://arxiv.org/abs/2303.10671
Autor:
Gen, M., Ikeda, A., Aoyama, K., Jeschke, H. O., Ishii, Y., Ishikawa, H., Yajima, T., Okamoto, Y., Zhou, X. -G., Nakamura, D., Takeyama, S., Kindo, K., Matsuda, Y. H., Kohama, Y.
Publikováno v:
Proc. Natl. Acad. Sci. U.S.A. 120, e2302756120 (2023)
The mutual coupling of spin and lattice degrees of freedom is ubiquitous in magnetic materials and potentially creates exotic magnetic states in response to the external magnetic field. Particularly, geometrically frustrated magnets serve as a fertil
Externí odkaz:
http://arxiv.org/abs/2301.09509
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:
Nomura, T., Zhang, X. -X., Takagi, R., Karube, K., Kikkawa, A., Taguchi, Y., Tokura, Y., Zherlitsyn, S., Kohama, Y., Seki, S.
Publikováno v:
Phys. Rev. Lett. 130, 176301 (2023)
The phonon magnetochiral effect (MChE) is the nonreciprocal acoustic and thermal transports of phonons caused by the simultaneous breaking of the mirror and time-reversal symmetries. So far, the phonon MChE has been observed only in a ferrimagnetic i
Externí odkaz:
http://arxiv.org/abs/2212.00225
Autor:
Zvyagin, S. A., Ponomaryov, A. N., Wosnitza, J., Hirai, D., Hiroi, Z., Gen, M., Kohama, Y., Matsuo, A., Matsuda, Y. H., Kindo, K.
Publikováno v:
Nature Communications 13, 6310 (2022)
The observation of spinon excitations in the $S=\frac{1}{2}$ triangular antiferromagnet Ca$_3$ReO$_5$Cl$_2$ reveals a quasi-one-dimensional (1D) nature of magnetic correlations, in spite of the nominally 2D magnetic structure. This phenomenon is know
Externí odkaz:
http://arxiv.org/abs/2210.14864
Autor:
Nomura, T., Corboz, P., Miyata, A., Zherlitsyn, S., Ishii, Y., Kohama, Y., Matsuda, Y. H., Ikeda, A., Zhong, C., Kageyama, H., Mila, F.
Publikováno v:
Nat. Commun. 14, 3769 (2023)
Under magnetic fields, quantum magnets often undergo exotic phase transitions with various kinds of order. The discovery of a sequence of fractional magnetization plateaus in the Shastry-Sutherland compound SrCu2(BO3)2 has played a central role in th
Externí odkaz:
http://arxiv.org/abs/2209.07652
Autor:
Gen, M., Ishikawa, H., Ikeda, A., Miyake, A., Yang, Z., Okamoto, Y., Mori, M., Takenaka, K., Sagayama, H., Kurumaji, T., Tokunaga, Y., Arima, T., Tokunaga, M., Kindo, K., Matsuda, Y. H., Kohama, Y.
Frustrated magnets with a strong spin-lattice coupling can show rich magnetic phases and the associated fascinating phenomena. A promising platform is the breathing pyrochlore magnet CuInCr$_{4}$S$_{8}$ with localized $S=3/2$ Cr$^{3+}$ ions, which is
Externí odkaz:
http://arxiv.org/abs/2112.08990