Andreev reflection and Josephson currents on the surface of line Weyl semimetals
ORAL
Abstract
We study the Andreev reflection of line Weyl semimetals' surfaces drumhead states. Drumhead states are expected to have a very large effective mass. We show that the measurement of the Andreev reflection can be a very effective way to detect such mass experimentally.
We then investigate Josephson junctions in which the surface of a line Weyl semimetal is placed between two superconducting regions. Using a transfer matrix method we obtain the dependence of the Josephson current on the phase difference between the superconducting leads for long
and short junctions. We then study how the interplay of drumhead and bulk states affects the Josephson current-phase relation.
We then investigate Josephson junctions in which the surface of a line Weyl semimetal is placed between two superconducting regions. Using a transfer matrix method we obtain the dependence of the Josephson current on the phase difference between the superconducting leads for long
and short junctions. We then study how the interplay of drumhead and bulk states affects the Josephson current-phase relation.
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Presenters
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Xiang Hu
Physics, College of William and Mary, Physics, William and Mary
Authors
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Xiang Hu
Physics, College of William and Mary, Physics, William and Mary
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Dmitry Pikulin
Microsoft, Microsoft Quantum, Microsoft Station Q, University of California, Santa Barbara, Microsoft Station Q, Station Q, Microsoft, Microsoft Corp
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Enrico Rossi
Physics, William & Mary, Physics, William and Mary, Microsoft