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Search for a quantum critical point in CeRhSi 3 via electrical resistivity
Author(s) -
Iida Hiroki,
Sugawara Tetsuya,
Aoki Haruyoshi,
Kimura Noriaki
Publication year - 2013
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201200772
Subject(s) - quantum critical point , condensed matter physics , electrical resistivity and conductivity , antiferromagnetism , quantum phase transition , superconductivity , magnetic field , fermi liquid theory , heavy fermion superconductor , quantum , phase diagram , heavy fermion , physics , phase transition , critical field , materials science , phase (matter) , quantum mechanics
We have verified an existence of a quantum critical point (QCP) in heavy‐fermion superconductor CeRhSi 3 under magnetic fields and pressures by using the electrical resistivity measurements. Firstly, we revealed magnetic field–temperature ( H – T ) phase diagrams at several pressures: below and above the pressure where the antiferromagnetic (AFM) order disappears in zero magnetic field. In a higher pressure, we determined the quantum‐phase‐transition field H M where the AFM transition temperature drops to zero. Recovery to Fermi liquid state is not clearly observed above H M . Therefore, H M is not conclusively determined as the QCP.