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,P. Haen,Pascal Lejay,Rikio Settai,Yoshichika Onuki,Jacques Flouquet +9 more
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In this article, the relative change of effective mass through the pseudo metamagnetic transition is invariant under pressure and the spin-depairing of quasiparticles on CeRu2Si2 and that of Cooper pairs on the unconventional heavy fermion superconductor CeCoIn5.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 Ce0.9La0.1Ru2Si2 which corresponds to the "negative" pressure of CeRu2Si2 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.read more
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Scalable T2 resistivity in a small single-component Fermi surface
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Dai Aoki,Tristan Combier,Valentin Taufour,Tatsuma D. Matsuda,Georg Knebel,Hisashi Kotegawa,Jacques Flouquet +6 more
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References
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Superconductivity in a Strong Spin-Exchange Field
Peter Fulde,Richard A. Ferrell +1 more
TL;DR: In this paper, it was shown that the depaired state has a spatially dependent complex Gorkov field, corresponding to a nonzero pairing momentum in the BCS model, and that the presence of the "normal" electrons from the broken pairs reduces the total current to zero, gives the deblating state some spin polarization, and results in almost normal Sommerfeld specific heat and single-electron tunneling characteristics.
Journal ArticleDOI
Unconventional heavy-fermion superconductor CeCoIn 5 : dc magnetization study at temperatures down to 50 mK
Takashi Tayama,Akira Harita,Toshiro Sakakibara,Yoshinori Haga,Hiroaki Shishido,Rikio Settai,Yoshichika Onuki +6 more
TL;DR: In this paper, the authors observed an unusual peak effect for the isothermal magnetization in fields 5-30 kOe below 0.7 K, indicating a strong Pauli paramagnetic suppression in the even-parity pairing.
Journal ArticleDOI
The quantum critical point in CeRhIn_5: a resistivity study
TL;DR: In this article, the authors compared the magnetic field-temperature phase diagram of CeCoIn_5 with the pressure and temperature phase diagram for the case of strong coupling models.
Journal ArticleDOI
The Quantum Critical Point in CeRhIn5: A Resistivity Study
TL;DR: In this article, the authors compared the magnetic field-temperature phase diagram of CeCoIn 5 with the pressure-time phase diagram for high magnetic field by resistivity measurements, and showed that at a critical pressure of p c ≈ 2.5 GPa, the antiferromagnetic ground state under high magnetic fields collapses very rapidly.
Journal ArticleDOI
Pressure dependence of the fulde-ferrell-larkin-ovchinnikov state in CeCoIn5
C. F. Miclea,Michael Nicklas,David S. Parker,Kazumi Maki,J. L. Sarrao,Joe D. Thompson,G. Sparn,Frank Steglich +7 more
TL;DR: This study has recorded the signature of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state for all pressures when H parallel to ab, and finds a close parallel between the T-P phase diagram of CeCoIn5 and theT-x phase diagrams of the high-Tc cuprates, where x is the hole concentration.