University of Cambridge > Talks.cam > Quantum Matter Seminar > Orbital-dependent scattering in Sr2RuO4 and FeSe probed by uniaxial stress

  Browse A-Z

Log in

University Account External (via Google)

🔐 Log In

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

ℹ️ Information

Orbital-dependent scattering in Sr2RuO4 and FeSe probed by uniaxial stress

Download to your calendar using vCal

If you have a question about this talk, please contact Malte Grosche .

Sr2RuO4 and FeSe are both among the major mysteries of modern condensed matter physics. Sr2RuO4 has a superconductivity that does not appear to be explainable by any known mechanism. FeSe shows electronically-driven nematicity, in the absence of any other electronic order, and the mechanism is not clear. In this talk, I will demonstrate the use of strain-tuning to probe k-dependent scattering in both of these materials. In Sr2RuO4, we find that tuning through a Lifshitz transition drastically reduces the scattering on sections of Fermi surface with dxy orbital weight, but not sections with dxz and dyz weight. This orbital dependence of the scattering is evidence for Hund’s-driven decoupling. Hund’s interactions may even drive the superconducting pairing. In FeSe, we find evidence that its nematic resistive anisotropy is driven by spin fluctuations in the dyz orbital, and that these spin fluctuations might not be the origin of the nematicity.

This talk is part of the Quantum Matter Seminar series.

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

Cambridge Institute Genomics Core Lecture Theatre, Cambridge Research Institute OCR, Progress House, Westwood Way, Coventry, UK

Other talks

Title to be confirmed TBC Polar Oceans Seminar Talk Toward affordable preventive healthcare Coming soon Title tbc
 

© 2006-2025 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity