摘要: The scaling behavior over four decades of the ratio temperature T to magnetic field B observed in magnetization beta-YbAlB4 is theoretically examined. By developing a theoretical framework that exhibits quantum critical phenomena Yb-valence fluctuations under field, we show T/B-scaling can appear near point valence transition. emergence T/B indicates presence small characteristic energy scale fluctuations. It argued criticality offers unified explanation for unconventional as well beta-YbAlB4.
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jps.jp参考文章(18)
Kazumasa Miyake, Hiroaki Ikeda, A Theory of Anisotropic Semiconductor of Heavy Fermions Journal of the Physical Society of Japan. ,vol. 65, pp. 1769- 1781 ,(1996) , 10.1143/JPSJ.65.1769
Shinji Watanabe, Atsushi Tsuruta, Kazumasa Miyake, Jacques Flouquet, Magnetic-Field Control of Quantum Critical Points of Valence Transition Physical Review Letters. ,vol. 100, pp. 236401- 236401 ,(2008) , 10.1103/PHYSREVLETT.100.236401
Yoshifumi Onishi, Kazumasa Miyake, Enhanced Valence Fluctuations Caused by f-c Coulomb Interaction in Ce-Based Heavy Electrons: Possible Origin of Pressure-Induced Enhancement of Superconducting Transition Temperature in CeCu 2 Ge 2 and Related Compounds Journal of the Physical Society of Japan. ,vol. 69, pp. 3955- 3964 ,(2000) , 10.1143/JPSJ.69.3955
Kazumasa Miyake, Hiroaki Ikeda, True Meaning of “Localized” f-Electrons Measured by dHvA Experiments in Ce-Based Heavy Fermion Metals Journal of the Physical Society of Japan. ,vol. 75, pp. 033704- 033704 ,(2006) , 10.1143/JPSJ.75.033704
Y. Matsumoto, S. Nakatsuji, K. Kuga, Y. Karaki, N. Horie, Y. Shimura, T. Sakakibara, A. H. Nevidomskyy, P. Coleman, Quantum Criticality Without Tuning in the Mixed Valence Compound β-YbAlB4 Science. ,vol. 331, pp. 316- 319 ,(2011) , 10.1126/SCIENCE.1197531
John A. Hertz, Quantum critical phenomena Physical Review B. ,vol. 14, pp. 1165- 1184 ,(1976) , 10.1103/PHYSREVB.14.1165
Y. Aoki, T.D. Matsuda, H. Sugawara, H. Sato, H. Ohkuni, R. Settai, Y. O¯nuki, E. Yamamoto, Y. Haga, A.V. Andreev, V. Sechovsky, L. Havela, H. Ikeda, K. Miyake, Thermal properties of metamagnetic transition in heavy-fermion systems Journal of Magnetism and Magnetic Materials. ,vol. 177, pp. 271- 276 ,(1998) , 10.1016/S0304-8853(97)00484-8
Tôru Moriya, Tetsuya Takimoto, Anomalous Properties around Magnetic Instability in Heavy Electron Systems Journal of the Physical Society of Japan. ,vol. 64, pp. 960- 969 ,(1995) , 10.1143/JPSJ.64.960
S. Nakatsuji, K. Kuga, Y. Machida, T. Tayama, T. Sakakibara, Y. Karaki, H. Ishimoto, S. Yonezawa, Y. Maeno, E. Pearson, G. G. Lonzarich, L. Balicas, H. Lee, Z. Fisk, Superconductivity and quantum criticality in the heavy-fermion system |[beta]|-YbAlB4 Nature Physics. ,vol. 4, pp. 603- 607 ,(2008) , 10.1038/NPHYS1002
A. J. Millis, Effect of a nonzero temperature on quantum critical points in itinerant fermion systems Physical Review B. ,vol. 48, pp. 7183- 7196 ,(1993) , 10.1103/PHYSREVB.48.7183