Ideal switching effect in periodic spin-orbit coupling structures

Abstract

An ideal switching effect is discovered in a semiconductor nanowire with a spatially-periodic Rashba structure. Bistable `ON' and `OFF' states can be realized by tuning the gate voltage applied on the Rashba regions. The energy range and position of `OFF' states can be manipulated effectively by varying the strength of the spin-orbit coupling (SOC) and the unit length of the periodic structure, respectively. The switching effect of the nanowire is found to be tolerant of small random fluctuations of SOC strength in the periodic structure. This ideal switching effect might be applicable in future spintronic devices.

4 pages and 4 figures

References in corpus (9)

• Experimental observation of the spin-Hall effect in a two dimensional spin-orbit coupled semiconductor system
• Current-Induced Polarization and the Spin Hall Effect at Room Temperature
• Spin-current modulation and square-wave transmission through periodically stubbed electron waveguides
• Datta-Das transistor with enhanced spin control
• Spontaneous spin-polarized current in a nonuniform Rashba interaction system
• Universal Quantum Computation through Control of Spin-Orbit Coupling
• Spin Hall effect in clean two dimensional electron gases with Rashba spin-orbit coupling
• Shot noise and spin-orbit coherent control of entangled and spin polarized electrons
• All-Electrical Quantum Computation with Mobile Spin Qubits

Cited by in corpus (8)

• Gap solitons in the spin-orbit coupled Bose-Einstein condensates
• Metal-insulator transition in a quantum wire driven by a modulated Rashba spin-orbit coupling
• Modulated Rashba interaction in a quantum wire: Spin and charge dynamics
• Quantum Transport of Dirac fermions in graphene with a spatially varying Rashba spin-orbit coupling
• Graphene-based spin switch device via modulated Rashba field and strain
• Spin-filtering and charge- and spin-switching effects in a quantum wire with periodically attached stubs
• Half-metal phases in a quantum wire with modulated spin-orbit interaction
• Long range alternating spin current order in a quantum wire with modulated spin-orbit interactions