CM Seminar - Pressure Control of Competing Orders in Superconductors

15 Apr2021

Speaker: Matthieu Le Tacon - Institute for Quantum Materials and Technologies, Karlsruhe Institute of Technology

Time: Apr 15, 2021 :: 10:00AM - 11:00AM

Location:

Canada

https://ubc.zoom.us/j/64183011430?pwd=U2lFNXEwSmlBRWVBdTR5OG1ZdlVSZz09
Meeting ID: 641 8301 1430
Passcode: 113399


Talk title: Pressure Control of Competing Orders in Superconductors
Speaker: Matthieu Le Tacon - Institute for Quantum Materials and Technologies, Karlsruhe Institute of Technology

Abstract: External control of electronic phases in correlated-electron materials is a long-standing challenge of condensed-matter research. In the recent years it has been realized that the underlying crystal lattice was more than a mere spectator and could be used as an insightful tuning knob.

In this talk, I will show how the combination of pressure (hydrostatic or uniaxial) tuning and x-ray spectroscopy has been used in the course of the last decade to gain fresh insights on the interplay between coexisting, competing or intertwined electronic phases in conventional and unconventional superconductors.

I will in particular report on recent studies of the lattice dynamics under pressure by means of inelastic x-ray scattering in various families of compounds exhibiting charge-density-waves, from elemental a-Uranium [1] to more complex metallic dichalcogenides [2] and high temperature superconducting cuprates [3-5].

[1] S. Raymond, et al. Phys. Rev. Lett. 107 136401 (2011)
[2] M. Leroux, et al. Phys. Rev. B 92 140303 (2015)
[3] S. M. Souliou, et al. Phys. Rev. B 97 020503 (2018)
[4] H. H. Kim, S. M. Souliou et al. Science 362 1040 (2018)
[5] H. H. Kim, et al. Phys. Rev. Lett. 126 037002 (2021)

  • Seminar