Giant magnetoresistance in the junction of two ferromagnets on the surface of diffusive topological insulators

Abstract

We reveal the giant magnetoresistance induced by the spin-polarized current in the ferromagnet (F_1)/topological insulator (TI)/ferromagnet (F_2) junction, where two ferromagnets are deposited on the diffusive surface of the TI. We can increase and reduce the value of the giant magnetoresistance by tuning the spin-polarized current, which is controlled by the magnetization configurations. The property is intuitively understood by the non-equilibrium spin-polarized current, which plays the role of an effective electrochemical potential on the surface of the TI.

5 pages, 2 figures

References in corpus (4)

• Dissipationless Quantum Spin Current at Room Temperature
• Spin-Charge Locking and Tunneling into a Helical Metal
• Boundary spin Hall effect in a two-dimensional semiconductor system with Rashba spin-orbit coupling
• Spin diffusion and magnetoresistance in ferromagnet/topological-insulator junctions

Cited by in corpus (12)

• Electrical injection and detection of spin-polarized currents in topological insulator Bi2Te2Se
• Topological insulator based spin valve devices: evidence for spin polarized transport of spin-momentum-locked topological surface states
• Tunneling magnetoresistance devices based on topological insulators: Ferromagnet/insulator/topological-insulator junctions employing Bi${}_2$Se${}_3$
• Spin and charge transport induced by a twisted light beam on a surface of a topological insulator
• Spin-charge transport driven by magnetization dynamics on disordered surface of doped topological insulators
• Tunnel Magnetoresistance scan of a pristine three-dimensional topological insulator
• Tunneling conductance in two-dimensional junctions between a normal metal and a ferromagnetic Rashba metal
• Detection of current induced spin polarization in epitaxial Bi${}_2$Te${}_3$ thin film
• Transport signatures of surface potentials on three-dimensional topological insulators
• Probing surface states exposed by crystal terminations at arbitrary orientations of three-dimensional topological insulators
• Transport theory for electrical detection of the spin texture and spin-momentum locking of topological surface states
• Determination of Out-of-plane Spin Polarization of Topological Surface States by Spin Hall Effect Tunneling Spectroscopy