O.M. Stewart Colloquium Series presents: Se Kwon Kim

Tuesday, February 27, 2018 4:00pm

Physics Library, Room 223A, Physics Building

Departments: 

The MU Physics & Astronomy Department's O. M. Stewart Colloquium Series presents, "Superfluid Spin Transport in Quantum Materials," Tuesday, Feb. 27, 4:00 p.m. at the Physics building library, Room 223A. Refreshments will be served beginning at 3:45 p.m.

Se Kwon Kim, University of California-Los Angeles

Se Kwon Kim, University of California-Los Angeles, writes, "Recent advancements in spintronic techniques originally developed for spin-based devices now enable us to study fundamental spin physics of quantum materials with unprecedented spin-current control and measurement, opening a new area of theoretical and experimental investigation. One phenomenon emerging in the aforementioned direction is superfluid spin transport in magnetic insulators, a magnetic analog of mass superfluidity, which has been envisioned about a half century ago and can now be realized with the aid of spin-current sources and detectors developed in spintronics. When the medium for superfluid spin transport is a quantum spin chain, topological quantum effects influence spin transport significantly, differentiating the decaying rate of the spin supercurrent between the integer versus half-odd-integer spin chains. The spin-parity dependence of the decaying rate can be probed in a magnetoelectric circuit. Analogous investigations of spin transport are envisioned in quantum materials such as strontium ruthenate and cuprates."