Zobrazeno 1 - 10
of 4 037
pro vyhledávání: '"Tokunaga, M"'
Autor:
Roppongi, M., Arakawa, T., Yoshino, Y., Ishihara, K., Kinoshita, Y., Tokunaga, M., Matsuda, Y., Hashimoto, K., Shibauchi, T.
Publikováno v:
Rev. Sci. Instrum. 95, 124704 (2024)
We have developed a circularly polarized dielectric rutile (TiO$_2$) cavity with a high quality-factor that can generate circularly polarized microwaves from two orthogonal linearly polarized microwaves with a phase difference of $\pm \pi/2$ using a
Externí odkaz:
http://arxiv.org/abs/2404.09662
Autor:
Kurihara, R., Sato, Y., Miyake, A., Akaki, M., Mitsumoto, K., Hagiwara, M., Kuwahara, H., Tokunaga, M.
We performed high-magnetic-field magnetization, polarization, and ultrasonic measurements in Ba$_2$CuGe$_2$O$_7$ to investigate field-induced multiferroic properties arising from a cross-correlation between electric dipoles and electric quadrupoles i
Externí odkaz:
http://arxiv.org/abs/2402.13504
Autor:
Suetsugu, S., Asaba, T., Kasahara, Y., Kohsaka, Y., Totsuka, K., Li, B., Zhao, Y., Li, Y., Tokunaga, M., Matsuda, Y.
Publikováno v:
Phys. Rev. Lett. 132, 226701 (2024)
The two-dimensional (2D) spin-1/2 kagome Heisenberg antiferromagnet is believed to host quantum spin liquid (QSL) states with no magnetic order, but its ground state remains largely elusive. An important outstanding question concerns the presence or
Externí odkaz:
http://arxiv.org/abs/2310.10069
Autor:
Fujishiro, Y., Terakura, C., Miyake, A., Kanazawa, N., Nakazawa, K., Ogawa, N., Kadobayashi, H., Kawaguchi, S., Kagayama, T., Tokunaga, M., Kato, Y., Motome, Y., Shimizu, K., Tokura, Y.
A plethora of correlated and exotic metallic states have been identified on the border of itinerant magnetism, where the long-range spin texture is melted by tuning the magnetic transition temperature (T$_C$) towards zero, referred to as the quantum
Externí odkaz:
http://arxiv.org/abs/2310.04823
Autor:
Zhang, L. -F., Fujita, T. C., Masutake, Y., Kawamura, M., Arima, T., Kumigashira, H., Tokunaga, M., Kawasaki, M.
Publikováno v:
Commun Mater 5, 35 (2024)
Complex oxides are mesmerizing material systems to realize multiple physical properties and functionalities by integrating different elements in a single compound. However, owing to the chemical instability, not all the combinations of elements can b
Externí odkaz:
http://arxiv.org/abs/2305.09201
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
In the extreme quantum limit states under high magnetic fields, enhanced electronic correlation effects can stabilize anomalous quantum states. Using band-tuning with a magnetic field, we realized a spin-polarized quantum limit state in the field-ind
Externí odkaz:
http://arxiv.org/abs/2302.14228
Autor:
Kondo, M., Ochi, M., Kurihara, R., Miyake, A., Yamasaki, Y., Tokunaga, M., Nakao, H., Kuroki, K., Kida, T., Hagiwara, M., Murakawa, H., Hanasaki, N., Sakai, H.
Magnets, with topologically-nontrivial Dirac/Weyl points, have recently attracted significant attention owing to the unconventional physical properties, such as large anomalous Hall effects. However, they typically have a high carrier density and com
Externí odkaz:
http://arxiv.org/abs/2206.04577
Autor:
Gen, M., Miyake, A., Yagiuchi, H., Watanabe, Y., Ikeda, A., Matsuda, Y. H., Tokunaga, M., Arima, T., Tokunaga, Y.
The polar magnet CaBaCo$_{4}$O$_{7}$ is known to exhibit the largest magnetic-field-driven electric polarization change ($\Delta P$) associated with an antiferromagnetic (AFM)-ferrimagnetic (FIM) transition in a narrow temperature range between 62 an
Externí odkaz:
http://arxiv.org/abs/2203.16397
Autor:
Kakimoto, K., Takada, S., Ohta, H., Haraguchi, Y., Hagihala, M., Torii, S., Kamiyama, T., Mitamura, H., Tokunaga, M., Hatakeyama, A., Katori, H. Aruga
Publikováno v:
J. Phys. Soc. Jpn. 91 054704 (2022)
The magnetism of Al$_x$Fe$_{2-x}$GeO$_5$ from $x$ = 0.09 to $x$ = 0.91 with andalusite structure was examined. The magnetic properties of Al$_x$Fe$_{2-x}$GeO$_5$ at low temperatures were found to be weak ferromagnetic-like state for $x$ $<$ 0.3 and s
Externí odkaz:
http://arxiv.org/abs/2202.01491