4th internal biannual science meeting of the MLZ

Quests for fractionalized excitations in frustrated quantum magnets

26 Jun 2019, 10:20

20m

Roof

Short talk Science group meetings 1

Speaker

Yixi Su (JCNS-MLZ, Garching)

Description

Yixi Su$^1$, Xiao Wang$^1$, Fengfeng Zhu$^1$, Junda Song$^1$, Viviane Pecanha-Antonio$^1$, Erxi Feng$^1$, Thomas Müller$^1$, Thomas Brückel$^2$

1Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich, D-85747 Garching, Germany
2Jülich Centre for Neutron Science (JCNS) and Peter Grünberg Institute (PGI), Forschungszentrum Jülich, D-52425 Jülich, Germany

An unambiguous realization of quantum spin liquid (QSL), characterized by fractionalized excitations, non-local quantum entanglement and emergent Gauge symmetry in the ground state, has yet to be achieved in frustrated and topological quantum magnets, often due to preemptive long-range magnetic order or spin freezing at finite temperature. In this talk, I will present some examples from our recent polarized and inelastic neutron scattering studies of magnetic order and excitations in several QSL candidate materials with frustrated pyrochlore, honeycomb and triangular lattices. Our central aim is to search for possible experimental signatures of fractionalized excitations at finite temperature.