Pressure evolution of the magnetic field induced ferromagnetic fluctuation through the pseudo-metamagnetism of CeRu2Si2

Dai Aoki; Carley Paulsen; Tatsuma D. Matsuda; Liam Malone; Georg Knebel; Pierre Haen; Pascal Lejay; Rikio Settai; Yoshichika Onuki; Jacques Flouquet

doi:10.1143/JPSJ.80.053702

Pressure evolution of the magnetic field induced ferromagnetic fluctuation through the pseudo-metamagnetism of CeRu₂Si₂

Dai Aoki, Carley Paulsen, Tatsuma D. Matsuda, Liam Malone, Georg Knebel, Pierre Haen, Pascal Lejay, Rikio Settai, Yoshichika Onuki, Jacques Flouquet

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Resistivity measurements performed under pressure in the paramagnetic ground state of CeRu₂Si₂ 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 Ceo.9Lao.1Ru2Si2 which corresponds to the "negative" pressure of CeRu ₂Si₂ by volume expansion. Finally, we describe the link between the spin-depairing of quasiparticles on CeRu₂Si₂ and that of Cooper pairs on the unconventional heavy fermion superconductor CeCoIn₅.

Original language	English
Article number	053702
Journal	journal of the physical society of japan
Volume	80
Issue number	5
DOIs	https://doi.org/10.1143/JPSJ.80.053702
Publication status	Published - 2011 May
Externally published	Yes

Keywords

CeCoIn
CeRuSi
Effective mass
Pseudo-metamagnetism

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.80.053702

Cite this

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title = "Pressure evolution of the magnetic field induced ferromagnetic fluctuation through the pseudo-metamagnetism of CeRu2Si2",

abstract = "Resistivity measurements performed under pressure in the paramagnetic ground state of CeRu2Si2 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 Ceo.9Lao.1Ru2Si2 which corresponds to the {"}negative{"} pressure of CeRu 2Si2 by volume expansion. Finally, we describe the link between the spin-depairing of quasiparticles on CeRu2Si2 and that of Cooper pairs on the unconventional heavy fermion superconductor CeCoIn5.",

keywords = "CeCoIn, CeRuSi, Effective mass, Pseudo-metamagnetism",

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T1 - Pressure evolution of the magnetic field induced ferromagnetic fluctuation through the pseudo-metamagnetism of CeRu2Si2

AU - Aoki, Dai

AU - Paulsen, Carley

AU - Matsuda, Tatsuma D.

AU - Malone, Liam

AU - Knebel, Georg

AU - Haen, Pierre

AU - Lejay, Pascal

AU - Settai, Rikio

AU - Onuki, Yoshichika

AU - Flouquet, Jacques

PY - 2011/5

Y1 - 2011/5

N2 - Resistivity measurements performed under pressure in the paramagnetic ground state of CeRu2Si2 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 Ceo.9Lao.1Ru2Si2 which corresponds to the "negative" pressure of CeRu 2Si2 by volume expansion. Finally, we describe the link between the spin-depairing of quasiparticles on CeRu2Si2 and that of Cooper pairs on the unconventional heavy fermion superconductor CeCoIn5.

AB - Resistivity measurements performed under pressure in the paramagnetic ground state of CeRu2Si2 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 Ceo.9Lao.1Ru2Si2 which corresponds to the "negative" pressure of CeRu 2Si2 by volume expansion. Finally, we describe the link between the spin-depairing of quasiparticles on CeRu2Si2 and that of Cooper pairs on the unconventional heavy fermion superconductor CeCoIn5.

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KW - CeRuSi

KW - Effective mass

KW - Pseudo-metamagnetism

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