2016/12/21 by W. Knafo, Rikio Settai, R. Settai +5 · 23 citations
Materials Science · Physics and Astronomy · #Antiferromagnetism #Condensed matter physics #Iron-based superconductors research #Ising model #Magnetic field #Magnetic susceptibility #Paramagnetism #Phase (matter) #Phase diagram #Phase transition #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quantum phase transition #Rare-earth and actinide compounds #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.95.014411
published in Physical review. B./Physical review. B 95(1) (American Physical Society) · 12 pages, 11 figures, 1 appendix, to be published in Physical Review B
arxiv created 2016/12/21 · openalex publication_date 2017/01/12 · arxiv updated 2017/01/17 · openalex created_date 2017/01/26 · openalex updated_date 2026/08/05
Using novel instrumentation to combine extreme conditions of intense pulsed magnetic field up to 60 T and high pressure up to 4 GPa, we have established the three-dimensional (3D) magnetic field-pressure-temperature phase diagram of a pure stoichiometric heavy-fermion antiferromagnet (CeRh2Si2). We find a temperature- and pressure-dependent decoupling of the critical and pseudometamagnetic fields at the borderlines of antiferromagnetism and strongly-correlated paramagnetism. This 3D phase diagram is representative of a class of heavy-fermion Ising antiferromagnets, where long-range magnetic ordering is decoupled from a maximum in the magnetic susceptibility. The combination of extreme conditions enabled us to characterize different quantum phase transitions, where peculiar quantum critical properties are revealed. The interest to couple the effects of magnetic field and pressure on quantum-critical correlated-electron systems is stressed.