Fermi Surfaces in the Antiferromagnetic, Paramagnetic and Polarized Paramagnetic States of CeRh2Si2 Compared with Quantum Oscillation Experiments

• DOI: 10.7566/jpsj.86.084702
• Publication Date: 2017-07-10T01:00:41Z
• Authors: Alexandre Pourret; Michi-To Suzuki; Alexandra Palacci...; Gabriel Seyfarth; Georg Knebel; Dai Aoki; Jacques Flouquet
• Keywords: [PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con]; Condensed Matter - Strongly Correlated Electrons; Strongly Correlated Electrons (cond-mat.str-el); 0103 physical sciences; 500; FOS: Physical sciences; [PHYS.COND.CM-SCE]Physics [physics]/Condensed Matter [cond-mat]/Strongly Correlated Electrons [cond-mat.str-el]; 530; 01 natural sciences; 7. Clean energy

The large quantum oscillations observed in the thermoelectric power antiferromagnetic (AF) state of heavy-fermion compound CeRh2Si2 disappear suddenly when entering polarized paramagnetic (PPM) at Hc=26.5 T, indicating an abrupt reconstruction Fermi surface. electronic band structure was [LDA+U] for AF taking correct magnetic into account, PPM state, and (PM). Different surfaces were obtained AF, PM, states. Due to folding, a number branches expected state. LDA+U calculation compared with previous LDA calculations. Furthermore, we both calculations previously published de Haas-van Alphen experiments. better agreement approach suggests that above critical pressure pc enters mixed-valence In under high field, 4f contribution level EF drops significantly PM electrons contribute only weakly surface our approach.