Electric-field control of tunneling magnetoresistance effect in a Ni/InAs/Ni quantum-dot spin valve

Abstract

We demonstrate an electric-field control of tunneling magnetoresistance (TMR) effect in a semiconductor quantum-dot (QD) spin-valve device. By using ferromagnetic Ni nano-gap electrodes, we observe the Coulomb blockade oscillations at a small bias voltage. In the vicinity of the Coulomb blockade peak, the TMR effect is significantly modulated and even its sign is switched by changing the gate voltage, where the sign of the TMR value changes at the resonant condition.

3 pages, 3 figures

References in corpus (2)

• Driven coherent oscillations of a single electron spin in a quantum dot
• Spin transport through a single self-assembled InAs quantum dot with ferromagnetic leads

Cited by in corpus (25)

• Spin effects in single electron tunneling
• Kondo effect in a semiconductor quantum dot coupled to ferromagnetic electrodes
• Spin-polarized current and shot noise in the presence of spin flip in a quantum dot via nonequilibrium Green's functions
• Effects of different geometries on the conductance, shot noise and tunnel magnetoresistance of double quantum dots
• Transport through quantum-dot spin valves containing magnetic impurities
• Electronic waiting-time distribution of a quantum-dot spin valve
• Spin-induced charge correlations in transport through interacting quantum dots with ferromagnetic leads
• Probing the exchange field of a quantum-dot spin valve by a superconducting lead
• Superconducting proximity effect and zero-bias anomaly in transport through quantum dots weakly attached to ferromagnetic leads
• Tunnelling magnetoresistance anomalies of a Coulomb blockaded quantum dot
• Lateral electron tunneling through single self-assembled InAs quantum dots coupled to superconducting nanogap electrodes
• Influence of spin waves on transport through a quantum-dot spin valve
• Shot noise and tunnel magnetoresistance in multilevel quantum dots: Effects of cotunneling
• Spin-dependent thermoelectric properties of a Kondo-correlated quantum dot with Rashba spin-orbit coupling
• Large voltage-tunable spin valve based on a double quantum dot
• Proposal for a correlation induced spin-current polarizer
• Pseudospin resonances reveal synthetic spin-orbit interaction
• Iterative path-integral summations for the tunneling magnetoresistance in interacting quantum-dot spin valves
• Spin-dependent current through a quantum dot from spin-polarized non-equilibrium quantum Hall edge channels
• Quantum Dot Spin Filter in Resonant Tunneling and Kondo Regimes
• Multilevel coherences in quantum dots
• Multi-terminal spin-dependent transport in ballistic carbon nanotubes
• Generation of spin-polarized current using multi-terminated quantum dot with spin-orbit interaction
• Interaction-induced current asymmetries in resonant transport through interacting quantum-dot spin valves revealed by iterative summation of path integrals
• Current fluctuations of noncollinear single-electron spin-valve transistors