fractional charge in vortices of interlayer coherent quantum Hall phases
ORAL
Abstract
Interlayer coherent phases are realized with two graphene or TMD layers separated by thin hexagonal Boron Nitrides that suppress current leakages between layers in quantizing perpendicular magnetic fields. The coherence is experimentally confirmed by interlayer exciton compressibility and current drag. As described in [Physical Review Letters 135 (8), 086002], the unpaired carriers in these phases will fractionalize into charged vortices and antivortices of the exciton superfluid and form a honeycomb lattice. With our numerical results, we show the mechanism of the fractional charge in these vortices and the experimental signals to expect.
*This work is supported by the Office of Naval Research under the Multidisciplinary University Research Initiatives (Grant No. N00014-21-1-2377).
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Presenters
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Bo Zou
- University of Texas at Austin
- University of Michigan at Ann Arbor