High pressure phase diagram of the non-centrosymmetric antiferromagnet CeCoGe 3

Georg Knebel; Dai Aoki; Gerard Lapertot; Bernard Salce; Jacques Flouquet; Tomoya Kawai; Hiroshi Muranaka; Rikio Settai; Yoshichika Onuki

doi:10.1143/JPSJ.78.074714

High pressure phase diagram of the non-centrosymmetric antiferromagnet CeCoGe ₃

Georg Knebel, Dai Aoki, Gerard Lapertot, Bernard Salce, Jacques Flouquet, Tomoya Kawai, Hiroshi Muranaka, Rikio Settai, Yoshichika Onuki

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

32 Citations (Scopus)

Abstract

We present a detailed study of the high pressure phase diagram of the non-centrosymmetric antiferromagnet CeCoGe3 by measurements of the ac calorimetry in a diamond anvil pressure cell. Under high pressure the magnetic ordering temperature shows a step like decrease due to various successive magnetic phases under high pressure. The magnetic order disappears at a critical pressure of pcfa 5.5 GPa. Around the critical pressure bulk superconductivity has been detected in the ac calorimetric measurement.

Original language	English
Article number	074714
Journal	journal of the physical society of japan
Volume	78
Issue number	7
DOIs	https://doi.org/10.1143/JPSJ.78.074714
Publication status	Published - 2009 Jul
Externally published	Yes

Keywords

CeCoGe3
Heavy fermion superconductivity
Non-centrosymmetry
Quantum critical point

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.78.074714

Cite this

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title = "High pressure phase diagram of the non-centrosymmetric antiferromagnet CeCoGe 3 ",

abstract = "We present a detailed study of the high pressure phase diagram of the non-centrosymmetric antiferromagnet CeCoGe3 by measurements of the ac calorimetry in a diamond anvil pressure cell. Under high pressure the magnetic ordering temperature shows a step like decrease due to various successive magnetic phases under high pressure. The magnetic order disappears at a critical pressure of pcfa 5.5 GPa. Around the critical pressure bulk superconductivity has been detected in the ac calorimetric measurement.",

keywords = "CeCoGe3, Heavy fermion superconductivity, Non-centrosymmetry, Quantum critical point",

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AU - Knebel, Georg

AU - Aoki, Dai

AU - Lapertot, Gerard

AU - Salce, Bernard

AU - Flouquet, Jacques

AU - Kawai, Tomoya

AU - Muranaka, Hiroshi

AU - Settai, Rikio

AU - Onuki, Yoshichika

PY - 2009/7

Y1 - 2009/7

N2 - We present a detailed study of the high pressure phase diagram of the non-centrosymmetric antiferromagnet CeCoGe3 by measurements of the ac calorimetry in a diamond anvil pressure cell. Under high pressure the magnetic ordering temperature shows a step like decrease due to various successive magnetic phases under high pressure. The magnetic order disappears at a critical pressure of pcfa 5.5 GPa. Around the critical pressure bulk superconductivity has been detected in the ac calorimetric measurement.

AB - We present a detailed study of the high pressure phase diagram of the non-centrosymmetric antiferromagnet CeCoGe3 by measurements of the ac calorimetry in a diamond anvil pressure cell. Under high pressure the magnetic ordering temperature shows a step like decrease due to various successive magnetic phases under high pressure. The magnetic order disappears at a critical pressure of pcfa 5.5 GPa. Around the critical pressure bulk superconductivity has been detected in the ac calorimetric measurement.

KW - CeCoGe3

KW - Heavy fermion superconductivity

KW - Non-centrosymmetry

KW - Quantum critical point

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