Spin correlations in spin blockade

Abstract

We investigate spin currents and spin-current correlations for double quantum dots in the spin blockade regime. By analysing the time evolution of the density matrix, we obtain the spin resolved currents and derive from a generating function an expression for the fluctuations and correlations. Both the charge current and the spin current turn out to be generally super-Poissonian. Moreover, we study the influence of ac fields acting upon the transported electrons. In particular, we focus on fields that cause spin rotation or photon-assisted tunnelling.

14 pages, 9 figures

References in corpus (26)

• Spins in few-electron quantum dots
• Shot Noise in Mesoscopic Conductors
• Driven coherent oscillations of a single electron spin in a quantum dot
• Driven quantum transport on the nanoscale
• Photon-assisted transport in semiconductor nanostructures
• Full Counting Statistics of Charge Transfer in Coulomb Blockade Systems
• Time-dependent resonant tunneling via two discrete states
• Resonant Photon-Assisted Tunneling Through a Double Quantum Dot: An Electron Pump From Spatial Rabi Oscillations
• Counting Statistics of Non-Markovian Quantum Stochastic Processes
• Full counting statistics of super-Poissonian shot noise in multi-level quantum dots
• Visualization of Coherent Destruction of Tunneling in an Optical Double Well System
• Current Noise in ac-Driven Nanoscale Conductors
• Electron Transport in Double Quantum Dot governed by Nuclear Magnetic Field
• Single Spin Dynamics and Decoherence in a Quantum Dot via Charge Transport
• Current noise in a vibrating quantum dot array
• Coherent transport in a two-electron quantum dot molecule
• Pauli spin blockade in weakly coupled quantum dots
• Nonadiabatic Electron Pumping: Maximal Current with Minimal Noise
• Effects of different geometries on the conductance, shot noise and tunnel magnetoresistance of double quantum dots
• Pumped spin-current and shot noise spectra in a single quantum dot
• Charge Transport Through Open, Driven Two-Level Systems with Dissipation
• Spin filtering through excited states in double quantum dot pumps
• Electron Bunching in Stacks of Coupled Quantum Dots
• Coherent spin rotations in open driven double quantum dots
• Shot noise in non-adiabatically driven nanoscale conductors
• Removing spin blockade by photon-assisted tunneling in double quantum dots

Cited by in corpus (14)

• Correlations of heat and charge currents in quantum-dot thermoelectric engines
• Control of Spin Blockade by AC Magnetic Fields in Triple Quantum Dots
• Steady-State Coherent Transfer by Adiabatic Passage
• Full-counting statistics of time-dependent conductors
• Waiting time distribution revealing the internal spin dynamics in a double quantum dot
• Photon assisted long-range tunneling
• Quantum interference in a Cooper pair splitter: The three sites model
• Electron bunching in triple quantum dot interferometers
• Electronic statistics-on-demand: bunching, anti-bunching, positive and negative correlations in a molecular spin-valve
• Photonic cross-noise spectroscopy of Majorana bound states
• All-thermal reversal of heat currents using qutrits
• Shot noise of spin current and spin transfer torque
• Precession of entangled spin and pseudospin in double quantum dots
• Interplay of Pauli blockade with electron-photon coupling in quantum dots