Charge Neutral Current Generation in a Spontaneous Quantum Hall Antiferromagnet
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Date
2021-01-08
Publication Type
Journal Article
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yes
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Abstract
The intrinsic Hall effect allows for the generation of a nondissipative charge neutral current, such as a pure spin current generated via the spin Hall effect. Breaking of the spatial inversion or time reversal symmetries, or the spin-orbit interaction is generally considered necessary for the generation of such a charge neutral current. Here, we challenge this general concept and present generation and detection of a charge neutral current in a centrosymmetric material with little spin-orbit interaction. We employ bilayer graphene, and find enhanced nonlocal transport in the quantum Hall antiferromagnetic state, where spontaneous symmetry breaking occurs due to the electronic correlation. (© 2021 American Physical Society.)
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published
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Journal / series
Volume
126 (1)
Pages / Article No.
16801
Publisher
American Physical Society