Probing the nematic insulator Tm<sub>1-x</sub>Y<sub>x</sub>VO<sub>4</sub> with neutron scattering near quantum criticality
ORAL
Abstract
The insulator TmVO4 have recently been established as a model system to study electronic nematicity near quantum criticality. The material undergoes a continuous ferroquadrupolar transition due to partially filled 4f orbitals of the Tm ions, mediated by long range interactions via the lattice. The transition can be described by the magnetic transverse field Ising model with a crossover to the nematic transverse field Ising model near the quantum critical region. Here we present results from neutron scattering on single crystal and powder samples of the system Tm1-xYxVO4 at various compositions in order to study the effects of disorder on electronic nematicity near a quantum critical point.
*This work was supported by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division, under contract No. DE-AC02-76SF00515. Sample growth was supported by the Gordon and Betty Moore Foundation Emergent Phenomena in Quantum Systems Initiative through Grant GBMF9068. This research used resources at the High Flux Isotope Reactor and Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory.
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Presenters
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Mingde Jiang
- Stanford University