Zobrazeno 1 - 10
of 1 921
pro vyhledávání: '"Izawa, K."'
Autor:
Ota, K., Shimozawa, M., Muroya, T., Miyamoto, T., Hosoi, S., Nakamura, A., Homma, Y., Honda, F., Aoki, D., Izawa, K.
We have performed precise Hall measurements for the ferrotoroidic candidate material UNi4B. Below Neel temperature TN ~ 20 K (corresponding to the ferrotoroidic transition temperature), a Hall voltage becomes finite even at zero field and changes pro
Externí odkaz:
http://arxiv.org/abs/2205.05555
Autor:
Onimaru, T., Izawa, K., Matsumoto, K. T., Yoshida, T., Machida, Y., Ikeura, T., Wakiya, K., Umeo, K., Kittaka, S., Araki, K., Sakakibara, T., Takabatake, T.
Publikováno v:
Phys. Rev. B 94, 075134 (2016)
Orbital degrees of freedom in condensed matters could play important roles in forming a variety of exotic electronic states by interacting with conduction electrons. In 4f electron systems, because of strong intra-atomic spin-orbit coupling, an orbit
Externí odkaz:
http://arxiv.org/abs/1606.09571
Autor:
Taupin, M., Knebel, G., Matsuda, T. D., Lapertot, G., Machida, Y., Izawa, K., Brison, J. -P., Flouquet, J.
Publikováno v:
Phys. Rev. Lett. 115, 046402 (2015)
The thermal conductivity of YbRh2Si2 has been measured down to very low temperatures under field in the basal plane. An additional channel for heat transport appears below 30 mK, both in the antiferromagnetic and paramagnetic states, respectively bel
Externí odkaz:
http://arxiv.org/abs/1503.01991
Autor:
Sutherland, M. L., O'Farrell, E. C. T., Toews, W. H., Dunn, J., Kuga, K., Nakatsuji, S., Machida, Y., Izawa, K., Hill, R. W.
Publikováno v:
Phys. Rev. B 92, 041114 (2015)
We report measurements of in-plane electrical and thermal transport properties in the limit $T \rightarrow 0$ near the unconventional quantum critical point in the heavy-fermion metal $\beta$-YbAlB$_4$. The high Kondo temperature $T_K$ $\simeq$ 200 K
Externí odkaz:
http://arxiv.org/abs/1408.0033
Autor:
Izawa, K. -I.
We continue to investigate possible parameter choices for primordial inflation with simple potentials such as power-law and two-term potentials. We examine the amount of parameter tuning to make the slow-roll inflation eternal. In particular, we adop
Externí odkaz:
http://arxiv.org/abs/1407.2328
Autor:
Imai, Takumi, Izawa, K. -I.
We investigate characteristic features of realistic parameter choice for primordial inflation with supersymmetric Higgs inflaton as an example of particle physics inflation model. We discuss constraints from observational results and analyze the degr
Externí odkaz:
http://arxiv.org/abs/1305.5307
Publikováno v:
Phys. Rev. Lett. 110, 236402 (2013)
The thermal conductivity measurements have been performed on the heavy-fermion compound YbRh2Si2 down to 0.04 K and under magnetic fields through a quantum critical point (QCP) at Bc = 0.66 T || c-axis. In the limit as T -> 0, we find that the Wiedem
Externí odkaz:
http://arxiv.org/abs/1210.0350
We consider a novel class of constraints on chiral superfields to obtain supersymmetric nonlinear sigma models in four spacetime dimensions, which strictly combine the internal symmetry breaking with spontaneous supersymmetry breaking. The resultant
Externí odkaz:
http://arxiv.org/abs/1207.1549
Autor:
Machida, Y., Tomokuni, K., Ogura, C., Izawa, K., Kuga, K., Nakatsuji, S., Lapertot, G., Knebel, G., Brison, J. -P., Flouquet, J.
Publikováno v:
Phys. Rev. Lett. 109, 156405 (2012)
The thermoelectric coefficients have been measured on the Yb-based heavy fermion compounds beta-YbAlB4 and YbRh2Si2 down to a very low temperature. We observe a striking difference in the behavior of the Seebeck coefficient, S in the vicinity of the
Externí odkaz:
http://arxiv.org/abs/1202.2753
Autor:
Machida, Y., Itoh, A., So, Y., Izawa, K., Haga, Y., Yamamoto, E., Kimura, N., Onuki, Y., Tsutsumi, Y., Machida, K.
Publikováno v:
Phys. Rev. Lett. 108, 157002 (2012)
The field-orientation dependent thermal conductivity of the heavy-fermion superconductor UPt$_3$ was measured down to very low temperatures and under magnetic fields throughout three distinct superconducting phases: A, B, and C phases. In the C phase
Externí odkaz:
http://arxiv.org/abs/1107.3082