title: Negative tunneling magneto-resistance in quantum wires with strong spin-orbit coupling.
abstract: We consider a two-dimensional magnetic tunnel junction of the FM/I/QW(FM+SO)/I/N structure, where FM, I and QW(FM+SO) stand for a ferromagnet, an insulator and a quantum wire with both magnetic ordering and Rashba spin-orbit (SOC), respectively. The tunneling magneto-resistance (TMR) exhibits strong anisotropy and switches sign as the polarization direction varies relative to the quantum-wire axis, due to interplay among the one-dimensionality, the magnetic ordering, and the strong SOC of the quantum wire.
authors.affiliation: Department of Physics, Korea University, Seoul 136-701, Korea.
authors.forename: Seungju
authors.initials: S
authors.lastname: Han
authors.forename: Llorenç
authors.initials: L
authors.lastname: Serra
authors.forename: Mahn-Soo
authors.initials: MS
authors.lastname: Choi