Decoupling between Field-Instabilities of Antiferromagnetism and Pseudo-Metamagnetism in Rh-Doped CeRu2Si2 Kondo Lattice
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概要
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Doping Kondo lattice system CeRu2Si2 with Rh-8% (Ce(Ru0.92Rh0.08)2Si2) leads to drastic consequences due to the mismatch of the lattice parameters between CeRu2Si2 and CeRh2Si2. A large variety of experiments clarifies the unusual properties of the ground state induced by the magnetic field from longitudinal antiferromagnetic (AF) mode at H=0 to polarized paramagnetic phase in very high magnetic field. The separation between AF phase, paramagnetic phase and polarized paramagnetic phase varying with temperature, magnetic field and pressure is discussed on the basis of the experiments down to very low temperature. Similarities and differences between Rh and La substituted alloys are discussed with emphasis on the competition between transverse and longitudinal AF modes, and ferromagnetic fluctuations.
- 2012-03-15
著者
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AOKI Dai
INAC, SPSMS, CEA Grenoble
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FLOUQUET Jacques
INAC, SPSMS, CEA Grenoble
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Paulsen Carley
Institut Néel, CNRS/UJF Grenoble, 38042 Grenoble, France
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Haen Pierre
Institut Néel, CNRS/UJF Grenoble, 38042 Grenoble, France
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KOTEGAWA Hisashi
INAC, SPSMS, CEA Grenoble, 38054 Grenoble, France
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Hardy Frédéric
Karlsruher Institut für Technologie, Institut für Festkörperphysik, 76021 Karlsruhe, Germany
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Meingast Christoph
Karlsruher Institut für Technologie, Institut für Festkörperphysik, 76021 Karlsruhe, Germany
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Boukahil Mounir
INAC, SPSMS, CEA Grenoble, 38054 Grenoble, France
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Knafo William
Laboratoire National des Champs Magnétiques Intenses, UPR 3228, CNRS-UJF-UPS-INSA, 143 Avenue de Rangueil, 31400 Toulouse, France
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Ressouche Eric
INAC, SPSMS, CEA Grenoble, 38054 Grenoble, France
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Raymond Stephane
INAC, SPSMS, CEA Grenoble, 38054 Grenoble, France
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Meingast Christoph
Karlsruhe Institute of Technology, Institut für Festkörperphysik, P. O. Box 3640, D-76021 Karlsruhe, Germany
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Meingast Christoph
Karlsruher Institut für Technologie, Institut für Festkörperphysik, 76021 Karlsruhe, Germany
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Knafo William
Laboratoire National des Champs Magnétiques Intenses, UPR 3228, CNRS-UJF-UPS-INSA, 143 Avenue de Rangueil, 31400 Toulouse, France
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Hardy Frédéric
Karlsruher Institut für Technologie, Institut für Festkörperphysik, 76021 Karlsruhe, Germany
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Flouquet Jacques
INAC, SPSMS, CEA Grenoble, 38054 Grenoble, France
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Haen Pierre
Institut Néel, CNRS/UJF Grenoble, 38042 Grenoble, France
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