Journal
PHYSICAL REVIEW LETTERS
Volume 108, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.108.147003
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Funding
- Ministry of Education, Culture, Sports, Science and Technology of Japan [17071007, 17071005, 19048008, 19048015, 22103005, 22340096, 21244053]
- Japan Science and Technology Agency
- Funding Program for World-Leading Innovative RD on Science and Technology (FIRST Program)
- Grants-in-Aid for Scientific Research [17071007, 22103005, 22340096] Funding Source: KAKEN
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We theoretically study a possible topological superconductivity in the interacting two layers of Rashba systems, which can be fabricated by the heterostructures of semiconductors and oxides. The hybridization, which induces the gap in the single particle dispersion, and the electron-electron interaction between the two layers leads to the novel phase diagram of the superconductivity. It is found that the topological superconductivity without breaking time-reversal symmetry is realized when (i) the Fermi energy is within the hybridization gap, and (ii) the interlayer interaction is repulsive, both of which can be satisfied in realistic systems. Edge channels are studied in a tight-binding model numerically, and the several predictions on experiments are also given.
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