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Events Calendar

Nematicity in f-electron materials

Date and Time: Tuesday, February 05, 2019, 01:30pm -
Location: 330W Serin (Renovated P&A Meeting Room and Seminar Space)

Speaker: Priscila Rosa (Condensed Matter and Magnet Science Group, Los Alamos National Laboratory)

Cerium-based materials are fascinating because their 4f electron may hybridize with the sea of conduction electrons, leading to novel emergent phenomena. CeRhIn5, a prototypical heavy-fermion antiferromagnet, exhibits remarkable behavior when subjected to either high magnetic fields or high applied pressures. A superconducting dome emerges around a putative unconventional quantum critical point at 2.3 GPa, and an XY nematic phase has been recently discovered at B* > 30 T. In this talk, I will focus on magnetostriction experiments that probe this high-field phase. Capacitance dilatometers and optical fibers containing fiber Bragg grating (FBG) sensors are used to measure the length change in millimiter-sized single crystals subjected to magnetic fields to 45 T. Our results support a scenario in which anisotropic hybridization sets the stage for electronic nematicity in CeRhIn5. I also hope to have time to discuss ongoing investigations that point to putative nematic states in other Ce-based materials.

Host: Premi Chandra

Extra Info: Please contact Ms. Nancy Pamula (This email address is being protected from spambots. You need JavaScript enabled to view it.) with questions regarding travel arrangements and reimbursements. Questions about the CM seminar schedule should be addressed to Prof. Premi Chandra (This email address is being protected from spambots. You need JavaScript enabled to view it.).