Resistivity of antiferromagnetic Ce 0.8La 0.2(Ru 0.85Rh 0.15) 2Si 2 under pressure

We have measured the resistivity of antiferromagnetic Ce 0.8La 0.2(Ru 0.85Rh 0.15) 2Si 2 along the tetragonal c-axis under various hydrostatic pressures. At P=0 GPa we observe no gap-type jump in the resistivity at T N as has been observed for Ce(Ru 0.85Rh 0.15) 2Si 2 at the spin density-wave (SDW)...

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Bibliographic Details
Published inPhysica. B, Condensed matter Vol. 359; pp. 169 - 171
Main Authors Isoda, Ayano, Shimada, Satomi, Kanda, Yuji, Murayama, Shigeyuki, Takano, Hideaki, Nakano, Tomohito, Hedo, Masato, Uwatoko, Yoshiya
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2005
Subjects
Ce(Ru 0.85Rh 0.15) 2Si 2
Pressure
Resistivity
Spin density wave
71.27.+a
Spin density wave
Resistivity
Ce(Ru 0.85Rh 0.15) 2Si 2
75.30.Mb
Pressure
75.30.Fv
75.30.Kz
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Summary:We have measured the resistivity of antiferromagnetic Ce 0.8La 0.2(Ru 0.85Rh 0.15) 2Si 2 along the tetragonal c-axis under various hydrostatic pressures. At P=0 GPa we observe no gap-type jump in the resistivity at T N as has been observed for Ce(Ru 0.85Rh 0.15) 2Si 2 at the spin density-wave (SDW) transition temperature, but rather downward bend with decreasing temperature. At P⩾0.48 GPa we observe the gap-type jump just below T N. These facts suggest the recovery of the gap opening due to the Fermi-surface nesting by pressure from a conventional localized antiferromagnetic state.
ISSN:0921-4526
DOI:10.1016/j.physb.2005.01.025