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Zheng, X.-G.*; Yamauchi, Ichihiro*; Hagihara, Masato; Nishibori, Eiji*; Kawae, Tatsuya*; Watanabe, Isao*; Uchiyama, Tomoki*; Chen, Y.*; Xu, C.-N.*
Nature Communications (Internet), 15, p.9989_1 - 9989_12, 2024/11
Times Cited Count:0 Percentile:0.00(Multidisciplinary Sciences)Shimamura, Kazutoshi*; Wajima, Hiroki*; Makino, Hayato*; Abe, Satoshi*; Haga, Yoshinori; Sato, Yoshiaki*; Kawae, Tatsuya*; Yoshida, Yasuo*
Japanese Journal of Applied Physics, 61(5), p.056502_1 - 056502_7, 2022/05
Times Cited Count:1 Percentile:8.10(Physics, Applied)Kawae, Tatsuya*; Koga, Mikito*; Sato, Yoshiaki*; Makiyama, Shun*; Inagaki, Yuji*; Tateiwa, Naoyuki; Fujiwara, Tetsuya*; Suzuki, Hiroyuki*; Kitai, Tetsuo*
JPS Conference Proceedings (Internet), 3, p.012030_1 - 012030_6, 2014/06
We measure the temperature dependence of the nonlinear susceptibility in Pr
La
Pb
.
reflects the fluctuation of the quadrupolar moments. Non-Fermi liquid behavior of
with
-dependence is detected below 2.5 K, suggesting that the screening of the quadrupolar moments is responsible for the anomalous behavior at low temperatures. These results provide a direct evidence for the crucial role of the quadrupolar moments in Pr
La
Pb
.
Kawae, Tatsuya*; Koga, Mikito*; Sato, Yoshiaki*; Makiyama, Shun*; Inagaki, Yuji*; Tateiwa, Naoyuki; Fujiwara, Tetsuya*; Suzuki, Hiroyuki*; Kitai, Tetsuo*
Journal of the Physical Society of Japan, 82(7), p.073701_1 - 073701_4, 2013/07
Times Cited Count:10 Percentile:54.73(Physics, Multidisciplinary)We measure the temperature dependence of the nonlinear susceptibility , which reflects the fluctuation of quadrupolar moments in, Pr
La
Pb
which a
non-Kramers doublet in the crystal-electric-field ground state to provide evidence of the quadrupolar Kondo effect. Non-Fermi liquid behavior of
with a - ln
dependence is detected in the [100] and [110] directions below
2.5 K, suggesting the screening of quadrupolar moments. In contrast,
in the [111] direction becomes constant below
3 K. The observed features indicate that a low-lying
doublet plays a crucial role in the anomalous properties of Pr
La
Pb
.
Tateiwa, Naoyuki; Nakagawa, Akitoshi*; Fujio, Kazuhiko*; Kawae, Tatsuya*; Takeda, Kazuyoshi*
Journal of Alloys and Compounds, 408-412, p.244 - 247, 2006/02
Times Cited Count:2 Percentile:21.25(Chemistry, Physical)The rare earth metal praseodymium (Pr) transforms from the d-fcc crystal structure (Pr-III) to -U one (Pr-IV) at 20 GPa with a large volume collapse (
= 0.16), which is associated with the valence change of the Pr ion. The two 4f electrons in the Pr ion is supposed to be itinerant in the Pr-IV phase. In order to investigate the electronic state of the phase IV, we performed the high-pressure electrical resistance measurement using the diamond anvil cell up to 32 GPa. In the Pr-IV phase, the temperature dependence of the resistance shows an upward negative curvature, suggestting the narrow quasiparticle band of the 4f electrons near the Fermi energy. A new phase boundary is found at
in the Pr-IV phase. From the temperature and magnetic field dependences of the resistance at 26 GPa, the ground state of the Pr-IV phase is suggested to be magnetic. Several possibilities for the origin of
are discussed.
Hagihara, Masato; Zheng, X.-G.*; Yamauchi, Ichihiro*; Nishibori, Eiji*; Kawae, Tatsuya*; Watanabe, Isao*; Uchiyama, Tomoki*; Chen, Y.*; Xu, C.-N.*
no journal, ,
no abstracts in English