Title: Non-monotonic pressure dependence of high-field nematicity and magnetism in CeRhIn5

Journal Article · · Nature Communications
ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [3];  [3];  [4];  [4];  [5]; ORCiD logo [3];  [3];  [2]; ORCiD logo [6]
  1. Max Planck Institute for Chemical Physics of Solids, Dresden (Germany); Helmholtz-Zentrum Dresden-Rossendorf, Dresden (Germany). Dresden High Magnetic Field Laboratory (HLD-EMFL)
  2. Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)
  5. Helmholtz-Zentrum Dresden-Rossendorf, Dresden (Germany). Dresden High Magnetic Field Laboratory (HLD-EMFL)
  6. Ecole Polytechnique Federale Lausanne (Switzerland); Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)

CeRhIn5 provides a textbook example of quantum criticality in a heavy fermion system: Pressure suppresses local-moment antiferromagnetic (AFM) order and induces superconductivity in a dome around the associated quantum critical point (QCP) near pc ≈ 23 kbar. Strong magnetic fields also suppress the AFM order at a field-induced QCP at Bc ≈ 50 T. In its vicinity, a nematic phase at B* ≈ 28 T characterized by a large in-plane resistivity anisotropy emerges. Here, we directly investigate the interrelation between these phenomena via magnetoresistivity measurements under high pressure. As pressure increases, the nematic transition shifts to higher fields, until it vanishes just below pc. While pressure suppresses magnetic order in zero field as pc is approached, we find magnetism to strengthen under strong magnetic fields due to suppression of the Kondo effect. We reveal a strongly non-mean-field-like phase diagram, much richer than the common local-moment description of CeRhIn5 would suggest.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
German Research Foundation (DFG); National Science Foundation (NSF); Swiss National Science Foundation (SNSF); USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
89233218CNA000001; FG52-10NA29659
OSTI ID:
1812677
Report Number(s):
LA-UR-21-24218
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 11; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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