Zobrazeno 1 - 10
of 988
pro vyhledávání: '"Kotegawa H"'
Autor:
Rana, K., Kotegawa, H., Ullah, R. R., Gati, E., Bud'ko, S. L., Canfield, P. C., Tou, H., Taufour, V., Furukawa, Y.
Publikováno v:
Phys. Rev. B 103, 174426 (2021)
$^{139}$La nuclear magnetic resonance (NMR) measurements under pressure ($p = 0-2.64$ GPa) have been carried out to investigate the static and dynamic magnetic properties of the itinerant ferromagnet LaCrGe$_3$. $^{139}$La-NMR spectra for all measure
Externí odkaz:
http://arxiv.org/abs/2105.03479
Autor:
Kotegawa, H., Matsuda, M., Ye, F., Tani, Y., Uda, K., Kuwata, Y., Tou, H., Matsuoka, E., Sugawara, H., Sakurai, T., Ohta, H., Harima, H., Takeda, K., Hayashi, J., Araki, S., Kobayashi, T. C.
Publikováno v:
Phys. Rev. Lett. 124, 087202 (2020)
Antiferromagnet Mn$_3$P with Neel temperature $T_N=30$ K is composed of Mn-tetrahedrons and zigzag chains formed by three inequivalent Mn sites. Due to the nearly frustrated lattice with many short Mn-Mn bonds, competition of the exchange interaction
Externí odkaz:
http://arxiv.org/abs/2001.07420
Autor:
Rana, K., Kotegawa, H., Ullah, R. R., Harvey, J. S., Bud'ko, S. L., Canfield, P. C., Tou, H., Taufour, V., Furukawa, Y.
Publikováno v:
Phys. Rev. B 99, 214417 (2019)
LaCrGe$_3$ is an itinerant ferromagnet with a Curie temperature of $T_{\rm c}$ = 85 K and exhibits an avoided ferromagnetic quantum critical point under pressure through a modulated antiferromagnetic phase as well as tri-critical wing structure in it
Externí odkaz:
http://arxiv.org/abs/1906.00249
Autor:
Niu, Q., Yu, W. C., Aulestia, E. I. Paredes, Hu, Y. J., Lai, Kwing To, Kotegawa, H., Matsuoka, E., Sugawara, H., Tou, H., Sun, D., Balakirev, F. F., Yanase, Y., Goh, Swee K.
The band structure of high carrier density metal CrP features an interesting crossing at the Y point of the Brillouin zone. The crossing, which is protected by the nonsymmorphic symmetry of the space group, results in a hybrid, semi-Dirac-like energy
Externí odkaz:
http://arxiv.org/abs/1903.05914
Autor:
Niu, Q., Yu, W. C., Yip, K. Y., Lim, Z. L., Kotegawa, H., Matsuoka, E., Sugawara, H., Tou, H., Yanase, Y., Goh, Swee K.
Publikováno v:
Nat. Commun. 8, 15358 (2017)
In conventional metals, modification of electron trajectories under magnetic field gives rise to a magnetoresistance that varies quadratically at low field, followed by a saturation at high field for closed orbits on the Fermi surface. Deviations fro
Externí odkaz:
http://arxiv.org/abs/1612.07480
We report the temperature-pressure-magnetic field phase diagram made from electrical resistivity measurements for the ferromagnetic (FM) Kondo lattice CeRuPO. The ground state at zero field changes from the FM state to another state, which is suggest
Externí odkaz:
http://arxiv.org/abs/1311.1386
NMR Investigation of the iron-based superconductors Ca4(Mg,Ti)3Fe2As2O8-y and Ca5(Sc,Ti)4Fe2As2O11-y
Publikováno v:
Phys. Rev. B 86, 134527 (2012)
$^{75}$As and $^{45}$Sc NMR measurements unravel the electronic state for Fe-based superconductors with perovskite-type blocking layers Ca$_4$(Mg,Ti)$_3$Fe$_2$As$_2$O$_{8-y}$ ($T_c^{onset}=47$ K) and Ca$_5$(Sc,Ti)$_4$Fe$_2$As$_2$O$_{11-y}$ ($T_c^{ons
Externí odkaz:
http://arxiv.org/abs/1210.5914
Autor:
Kotegawa H; Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan., Tanaka H; Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan., Takeuchi Y; Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan., Tou H; Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan., Sugawara H; Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan., Hayashi J; Muroran Institute of Technology, Muroran, Hokkaido 050-8585, Japan., Takeda K; Muroran Institute of Technology, Muroran, Hokkaido 050-8585, Japan.
Publikováno v:
Physical review letters [Phys Rev Lett] 2024 Sep 06; Vol. 133 (10), pp. 106301.
Autor:
Mizuguhci, Y., Hara, Y., Deguchi, K., Tsuda, S., Yamaguchi, T., Takeda, K., Kotegawa, H., Tou, H., Takano, Y.
Publikováno v:
Supercond. Sci. Technol. 23, 054013 (2010)
We have established a plot of the anion height dependence of Tc for the typical Fe-based superconductors. The plot appeared a symmetric curve with a peak around 1.38 A. Both data at ambient pressure and under high pressure obeyed the unique curve. Th
Externí odkaz:
http://arxiv.org/abs/1001.1801
Publikováno v:
J. Phys. Soc. Jpn. 78 (2009) 123707.
We report the resistivity measurements under pressure of two Fe-based superconductors with a thick perovskite oxide layer, Sr2VFeAsO3 and Sr2ScFePO3. The superconducting transition temperature Tc of Sr2VFeAsO3 markedly increases with increasing press
Externí odkaz:
http://arxiv.org/abs/0908.1469