TY - JOUR
T1 - Metal-insulator transition under high pressure in PrFe4P 12
AU - Hidaka, Hiroyuki
AU - Ando, Ikuma
AU - Kotegawa, Hisashi
AU - Kobayashi, Tatsuo C.
AU - Harima, Hisatomo
AU - Kobayashi, Miki
AU - Sugawara, Hitoshi
AU - Sato, Hideyuki
N1 - Funding Information:
This work was supported by a Grant-in-Aid for Scientific Research Priority Area “Skutterudite” (No.15072206) of the Ministry of Education, Culture, Sports, Science Technology, Japan and by Grant-in-Aid for Creative Scientific Research: 15GS0213), MEXT.
PY - 2005/4/30
Y1 - 2005/4/30
N2 - We have studied the electrical resistivity in a skutterudite compound PrFe4P12 under high pressure. An antiferro-quadrupolar ordering temperature TQ decreases monotonously with increasing pressure up to 2.4 GPa. Above 2.4 GPa, the metal-insulator (M-I) transition appears. By applying magnetic field, this M-I transition is suppressed easily and heavy-fermion state is realized. The observed Kondo effect and the field-induced heavy-fermion state at high pressure suggest that the quadrupolar interactions of the f electrons of Pr3+ survive even in the insulator phase.
AB - We have studied the electrical resistivity in a skutterudite compound PrFe4P12 under high pressure. An antiferro-quadrupolar ordering temperature TQ decreases monotonously with increasing pressure up to 2.4 GPa. Above 2.4 GPa, the metal-insulator (M-I) transition appears. By applying magnetic field, this M-I transition is suppressed easily and heavy-fermion state is realized. The observed Kondo effect and the field-induced heavy-fermion state at high pressure suggest that the quadrupolar interactions of the f electrons of Pr3+ survive even in the insulator phase.
KW - Filled skutterudite
KW - Metal-insulator transition
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U2 - 10.1016/j.physb.2005.01.334
DO - 10.1016/j.physb.2005.01.334
M3 - Article
AN - SCOPUS:18144398123
VL - 359-361
SP - 886
EP - 888
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - SPEC. ISS.
ER -