Quantum nematicity in EuB<sub>6</sub>
ORAL
Abstract
Our experimental discovery of a quantum nematic phase in the colossal magnetoresistive material EuB6 constitutes a breakthrough in quantum material research. Unlike the quantum nematics in the cuprate and arsenide superconductors, there is no nearby lattice instability complicating the interpretation, making EuB6 a clean model system for studying electronic nematicity. Interestingly, the nematic appears in the same region of the temperature-magnetic field phase diagram where experiments indicate magnetic polarons. This not only indicates a new understanding of nematicity but also paves the way for obtaining novel magnetoresistive transistor action in spintronic devices.
*The research at Université de Montréal received support from the Natural Sciences and Engineering Research Council of Canada (Canada). W.,W.-K. was in addition supported by the Fondation Courtois, a Canada Research Chair, and a ``Etablissement de nouveaux chercheurs et de nouvelles chercheuses universitaires'' grant from FRQNT. The work at the MPI-CPFS was enabled through a DAAD grant.
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Presenters
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Andrea Bianchi
- Universite de Montreal