Journal
PHYSICAL REVIEW LETTERS
Volume 107, Issue 23, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.236401
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Funding
- BSF [SPP1285 (DFG)]
- Packard Foundation
- Sherman-Fairchild Foundation
- Moore Foundation
- NSF [DMR-1055522, PHY-0456720, PHY-0803371]
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A junction between two topological superconductors containing a pair of Majorana fermions exhibits a fractional Josephson effect, 4 pi periodic in the superconductors' phase difference. An additional fractional Josephson effect, however, arises when the Majorana fermions are spatially separated by a superconducting barrier. This new term gives rise to a set of Shapiro steps which are essentially absent without Majorana modes and therefore provides a unique signature for these exotic states.
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