Journal
PHYSICAL REVIEW B
Volume 82, Issue 18, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.82.180505
Keywords
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Funding
- MEXT [17071007, 17071005, 19048008, 19048015, 21244053, 21540332]
- JSPS, Japan
- Program for World-Leading Innovative R & D on Science and Technology (FIRST Program)
- Grants-in-Aid for Scientific Research [17071005, 21540332, 21244053, 17071007] Funding Source: KAKEN
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We show that Majorana edge modes of two-dimensional spin-triplet topological superconductors (superfluids) have Ising-type spin density whose direction is determined by the d-vector characterizing the spin-triplet pairing symmetry. Exchange coupling between an impurity spin (S=1/2) and Majorana edge modes is thus Ising-type. Under external magnetic field perpendicular to the Ising axis, the system can be mapped to a two-level system with Ohmic dissipation, which is equivalent to the anisotropic Kondo model. The magnetic response of the impurity spin can serve as a local experimental probe for the order parameter.
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