University of Birmingham > Talks@bham > Condensed Matter Physics Seminars > Thermal Hall Transport in Spiral Magnet and Spin Liquid

Thermal Hall Transport in Spiral Magnet and Spin Liquid

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Mingee Chung.

As a former PhD student of David Thouless and a practitioner of skyrmion physics in condensed matter systems, I could not be more excited about the opportunity to present my recent work on emergent electrodynamics in skyrmion matter and some other quantum magnets at the University of Birmingham (where it all started). First I discuss recent observation of thermal Hall transport in a spiral magnet hosting the skymion lattice phase. The magnon thermal Hall effect caused by the magnons seeing the skyrmion as a source of emergent magnetic flux had long been predicted theoretically, but was not observed until recently [1]. The observed magnon thermal Hall effect (THE) finds convincing agreement with the model calculation which I will describe. In the second part of the talk, I discuss the observation of THE in a kagome spin liquid compound Cd-K [2]. A careful analysis of the data suggests a dual origin of the transport coming from both phonons and some kind of spin excitations. A sketch of the theoretical idea behind such interpretation will be given.

1. M. Akazawa et al., arXiv:2102.06430 (2021). 2. M. Akazaka et al., Phys. Rev. X 10 , 041059 (2020).

This talk is part of the Condensed Matter Physics Seminars series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.


Talks@bham, University of Birmingham. Contact Us | Help and Documentation | Privacy and Publicity.
talks@bham is based on from the University of Cambridge.