Journal
PHYSICAL REVIEW B
Volume 87, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.87.075438
Keywords
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Funding
- NSF [DMR-1055522]
- BSF
- DFG [SPP1285]
- NBRPC (973 program) [2011CBA00300, 2011CBA00301]
- Alfred P. Sloan Foundation
- Packard Foundation
- Humboldt Foundation
- Minerva Foundation
- Sherman Fairchild Foundation
- Lee A. DuBridge Foundation
- Moore-Foundation funded CEQS
- Institute for Quantum Information and Matter (IQIM) an NSF Physics Frontiers Center
- Gordon and Betty Moore Foundation
- Direct For Mathematical & Physical Scien [1055522] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1125565, 0803371] Funding Source: National Science Foundation
- Division Of Materials Research [1055522] Funding Source: National Science Foundation
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We investigate 1D quantum systems that support Majorana bound states at interfaces between topologically distinct regions. In particular, we show that there exists a duality between particle-hole and spin degrees of freedom in certain spin-orbit-coupled 1D platforms such as topological insulator edges. This duality results in a spin analog of previously explored fractional Josephson effects-that is, the spin current flowing across a magnetic junction exhibits 4 pi periodicity in the relative magnetic field angle across the junction. Furthermore, the interplay between the particle-hole and spin degrees of freedom results in unconventional magneto-Josephson effects, such that the Josephson charge current is a function of the magnetic field orientation with periodicity 4 pi. DOI: 10.1103/PhysRevB.87.075438
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