Manipulation of the Majorana Fermion, Andreev Reflection, and Josephson Current on Topological Insulators

Yukio Tanaka; Takehito Yokoyama; Naoto Nagaosa

doi:10.1103/PhysRevLett.103.107002

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Manipulation of the Majorana Fermion, Andreev Reflection, and Josephson Current on Topological Insulators

Yukio Tanaka, Takehito Yokoyama, Naoto Nagaosa

DOI 10.1103/PhysRevLett.103.107002 · Physical Review Letters

T1

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Abstract

We study theoretically the transport properties of a normal metal (N)/ferromagnet insulator (FI)/superconductor (S) junction and a S/FI/S junction formed on the surface of a three-dimensional topological insulator, where the chiral Majorana mode exists at the FI/S interface. We find the chiral Majorana mode generated in N/FI/S and S/FI/S junctions is very sensitively controlled by the direction of the magnetization m in the FI region. In particular, the current-phase relation of the Josephson current in S/FI/S junctions has a phase shift of neither 0 nor π that can be tuned continuously by the component of m perpendicular to the interface.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown