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青木 大*; Paulsen, C.*; 松田 達磨; Malone, L.*; Knebel, G.*; Haen, P.*; Lejay, P.*; 摂待 力生*; 大貫 惇睦; Flouquet, J.*
Journal of the Physical Society of Japan, 80(5), p.053702_1 - 053702_4, 2011/05
被引用回数:17 パーセンタイル:68.02(Physics, Multidisciplinary)Resistivity measurements performed under pressure in the paramagnetic ground state of CeRuSi are reported. They demonstrate that the relative change of effective mass through the pseudo metamagnetic transition is invariant under pressure. The results are compared with the first order metamagnetic transition due to the antiferromagnetism of CeLaRuSi which corresponds to the "negative" pressure of CeRuSi by volume expansion. Finally, we describe the link between the spin-depairing of quasiparticles on CeRuSi and that of Cooper pairs on the unconventional heavy fermion superconductor CeCoIn.
Boursier, R.*; Haen, P.*; Flouquet, J.*; 芳賀 芳範; 大貫 惇睦
Physica B; Condensed Matter, 378-380, p.76 - 77, 2006/05
被引用回数:4 パーセンタイル:22.76(Physics, Condensed Matter)CeRhSiのホール効果の実験を温度領域1.6Kから250Kまで、13kbarの高圧下まで行った。0Kにおけるホール効果の値は大きく、また圧力に強く依存し、臨界圧力で符号を変化する。