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

ABSTRACT: 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 p_c ≈ 23 kbar. Strong magnetic fields also suppress the AFM order at a field-induced QCP at B_c ≈ 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 p_c. While pressure suppresses magnetic order in zero fiel

SUBMITTER: Helm T 

PROVIDER: S-EPMC7359027 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature