TY - JOUR
T1 - Pressure effect on Yb-based strongly correlated electron systems
AU - Mito, T.
AU - Otani, M.
AU - Nakamura, M.
AU - Koyama, T.
AU - Wada, S.
AU - Kotegaway, H.
AU - Kobayashi, T. C.
AU - Idzikowski, B.
AU - Reiffers, M.
AU - Sarrao, J. L.
PY - 2009/1
Y1 - 2009/1
N2 - We studied pressure effects on YbCu5 and YbInCu4, good examples of the Yb-based compounds to investigate the nonmagnetic-magnetic transition in Yb-based strongly correlated electron systems. With increasing pressure, the low-temperature Fermi liquid state of YbCu5 is gradually suppressed, suggesting the second-order like nonmagnetic-magnetic transition around the pressure of 5-6 GPa. On the other hand, in YbInCu 4 which has a pressure-induced magnetic ordered ground state above PC = 2:45 GPa, both high-temperature paramagnetic and low-temperature intermediate valence phases are insensitive to pressure. Our results confirm the first-order nature of the transition between the intermediate valence and magnetic ordered phases with pressure.
AB - We studied pressure effects on YbCu5 and YbInCu4, good examples of the Yb-based compounds to investigate the nonmagnetic-magnetic transition in Yb-based strongly correlated electron systems. With increasing pressure, the low-temperature Fermi liquid state of YbCu5 is gradually suppressed, suggesting the second-order like nonmagnetic-magnetic transition around the pressure of 5-6 GPa. On the other hand, in YbInCu 4 which has a pressure-induced magnetic ordered ground state above PC = 2:45 GPa, both high-temperature paramagnetic and low-temperature intermediate valence phases are insensitive to pressure. Our results confirm the first-order nature of the transition between the intermediate valence and magnetic ordered phases with pressure.
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U2 - 10.12693/aphyspola.115.47
DO - 10.12693/aphyspola.115.47
M3 - Article
AN - SCOPUS:66149141826
SN - 0587-4246
VL - 115
SP - 47
EP - 52
JO - Acta Physica Polonica A
JF - Acta Physica Polonica A
IS - 1
ER -