Spintromechanics of a Magnetic Nanoshuttle

Abstract

We investigate theoretically the prospects for using a magnetic nanoelectromechanical single-electron tunneling (NEM-SET) device as an electronic spin filter. We find that strong magnetic exchange forces on the net spin of the mobile central dot of the NEM-SET structure lead to spin-dependent mechanical displacements ("spin polarons"), which give rise to vastly different tunnelling probabilities for electrons of different spin. The resulting spin polarization of the current can be controlled by bias and gate voltages and be very close to 100% at voltages and temperatures below a characteristic correlation energy set by the sum of the polaronic and Coulomb blockade energies.

Accepted for publication as a Rapid Communication in Phys. Rev. B and selected as an "Editors' Suggestion" paper. This version has minor modifications compared to arXiv:1205.2979, which it replaces

References in corpus (12)

• Spintronics: Fundamentals and applications
• Franck-Condon blockade and giant Fano factors in transport through single molecules
• Electric Field Control of Spin Transport
• Shuttle Mechanism for Charge Transfer in Coulomb Blockade Nanostructures
• Electrical generation and absorption of phonons in carbon nanotubes
• Vibrational sidebands and dissipative tunneling in molecular transistors
• Kondo effect in a semiconductor quantum dot coupled to ferromagnetic electrodes
• Spin-Resolved Tunneling Studies of the Exchange Field in EuS/Al Bilayers
• Coulomb Promotion of Spin-Dependent Tunnelling
• Optoelectronic Sensitization of Carbon Nanotubes by CdTe Nanocrystals
• Spin controlled nanomechanics induced by single-electron tunneling
• Polaronic effects in electron shuttling

Cited by in corpus (6)

• Spin-mediated photomechanical coupling of a nanoelectromechanical shuttle
• Electronic spin working mechanically
• Tunable spin-polaron state in a singly clamped semiconducting carbon nanotube
• Tunable RKKY interaction in a double quantum dot nanoelectromechanical device
• Coulomb-promoted spintromechanics in magnetic shuttle devices
• Spin-Polaronic Effects in Electric Shuttling in a Single Molecule Transistor with Magnetic Leads