Tunneling spectroscopy of spin-selective Aharonov-Bohm oscillations in a lateral triple quantum dot molecule

Abstract

We present a theory of tunneling spectroscopy of spin-selective Aharonov-Bohm oscillations in a lateral triple quantum dot molecule. The theory combines exact treatment of an isolated many-body system with the rate equation approach when the quantum dot molecule is weakly connected to the leads subject to arbitrary source-drain bias. The tunneling spectroscopy of the many-body complex is analyzed using the spectral functions of the system and applied to holes in a quantum dot molecule. Negative differential conductance is predicted and explained as a result of the redistribution of the spectral weight between transport channels. It is shown that different interference effects on singlet and triplet hole states in a magnetic field lead to spin-selective Aharonov-Bohm oscillations.

33 pages, 9 figures

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Cited by in corpus (8)

• Interference effects in the Coulomb blockade regime: current blocking and spin preparation in symmetric nanojunctions
• Quantum circuits based on coded qubits encoded in chirality of electron spin complexes in triple quantum dots
• Theory of electronic properties and quantum spin blockade in a gated linear triple quantum dot with one electron spin each
• Quantum interference in transport through almost symmetric double quantum dots
• Coulomb interactions induced perfect spin filtering effect in a quadruple quantum-dot cell
• Spin selective transport through Aharonov-Bohm and Aharonov-Casher triple quantum dot systems
• Master equation based steady-state cluster perturbation theory
• Pauli Spin Blockade in a Resonant Triple Quantum Dot Molecule