DCMPMS Seminars
Emergent quasi-particles in frustrated magnets
by Prof. Collin Broholm (Institute for Quantum Matter & Department of Physics and Astronomy, Johns Hopkins University)
Monday, November 15, 2021
from
to
(Asia/Kolkata)
at Online through ZOOM Webinar(Zoom link: https://zoom.us/j/98190618790 ( Meeting ID: 981 9061 8790 Passcode: 992066 )
at Online through ZOOM Webinar(Zoom link: https://zoom.us/j/98190618790 ( Meeting ID: 981 9061 8790 Passcode: 992066 )
Online through ZOOM Webinar(Zoom link:
https://zoom.us/j/98190618790
Description |
Crystalline solids with Interacting local moments that do not fully order at low temperatures can support a variety of strongly correlated electronic phenomena. With no static magnetism or symmetry breaking, the quantum spin liquid (QSL) represents an important albeit rare limit [1]. A much larger variety of materials has been found to have spin liquid like properties in restricted temperature and frequency regimes. I shall describe experiments that explore such materials by scattering neutrons from their emergent magnetic quasi-particles. The materials range from insulating rare earth oxides through transition metal oxides near the metal insulator transition to Kondo semi-metals and heavy fermions systems. Conducted using the latest neutron scattering instrumentation, the experiments offer detailed atomic scale insights into strongly correlated phenomena that challenge conventional understanding of magnetism in solids. [1] C. Broholm, R. J. Cava, S. A. Kivelson, D. G. Nocera, M. R. Norman, and T. Senthil, Science, Vol. 367, Issue 6475, (2020) |