Year: 2020
Type: article
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 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.
Source: Nature Communications
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $5,140
Funders: National Science Foundation, U.S. Department of Energy, Florida State University, National High Magnetic Field Laboratory, Deutsche Forschungsgemeinschaft, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Max-Planck-Gesellschaft, Helmholtz-Zentrum Dresden-Rossendorf, National Nuclear Security Administration, Division of Materials Research, High Magnetic Field Laboratory, Chinese Academy of Sciences, Division of Materials Sciences and Engineering, State of Florida
Awards: G1696679194, G1979617021, G2279809201, G2294341347, G2386482098, Crystalline micro-devices of quantum matter, G3725045585, G407646578, G4624992917, G502626589, National High Magnetic Field Laboratory Renewal 2013-2017, G580951548, G7172353655, ELECTRON INTERACTIONS IN ACTINIDIES AND RELATED SYSTEMS UNDER EXTREME CONDITIONS.
OpenAlex ID: W3041443923