Dynamic nuclear polarisation in biased quantum wires with spin-orbit interaction

Abstract

We propose a new method for dynamic nuclear polarisation in a quasi one-dimensional quantum wire utilising the spin-orbit interaction, the hyperfine interaction, and a finite source-drain potential difference. In contrast with current methods, our scheme does not rely on external magnetic or optical sources which makes independent control of closely placed devices much more feasible. Using this method, a significant polarisation of a few per cent is possible in currently available InAs wires which may be detected by conductance measurements. This may prove useful for nuclear-magnetic-resonance studies in nanoscale systems as well as in spin-based devices where external magnetic and optical sources will not be suitable.

6 pages, published version

References in corpus (11)

• Current induced electron spin polarization in strained semiconductors
• Ballistic spin-polarized transport and Rashba spin precession in semiconductor nanowires
• Effect of the spin-orbit interaction on the band structure and conductance of quasi-one-dimensional systems
• Spin Accumulation in Quantum Wires with Strong Rashba Spin-Orbit Coupling
• Optical pumping of quantum dot nuclear spins
• Dynamic Nuclear Polarization with Single Electron Spins
• Dynamics of Quantum Dot Nuclear Spin Polarization Controlled by a Single Electron
• Spin Polarization at Semiconductor Point Contacts in Absence of Magnetic Field
• Rashba quantum wire: exact solution and ballistic transport
• Polarization of Nuclear Spins from the Conductance of Quantum Wire
• Theory of NMR in semiconductor quantum point contact devices

Cited by in corpus (7)

• Backscattering Between Helical Edge States via Dynamic Nuclear Polarization
• Spin-current quantization in a quantum point contact with spin-orbit interaction
• Theory of NMR in semiconductor quantum point contact devices
• Dynamic nuclear spin polarization induced by Edelstein effect at Bi(111) surfaces
• Detection of spin injection into a double quantum dot: Violation of magnetic-field-inversion symmetry of nuclear polarization instabilities
• Dipole-like dynamical nuclear spin polarization around a quantum point contact
• Kondo Lattice Scenario in Disordered Semiconductor Heterostructures