Pauli spin blockade in carbon nanotube double quantum dots

Abstract

We report Pauli spin blockade in an impurity defined carbon nanotube double quantum dot. We observe a pronounced current suppression for negative source-drain bias voltages which is investigated for both symmetric and asymmetric coupling of the quantum dots to the leads. The measured differential conductance agrees well with a theoretical model of a double quantum dot system in the spin-blockade regime which allows us to estimate the occupation probabilities of the relevant singlet and triplet states. This work shows that effective spin-to-charge conversion in nanotube quantum dots is feasible and opens the possibility of single-spin readout in a material that is not limited by hyperfine interaction with nuclear spins.

7 pages, 5 figures

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Cited by in corpus (31)

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• Relaxation and Dephasing in a Two-electron 13C Nanotube Double Quantum Dot
• Valley-spin blockade and spin resonance in carbon nanotubes
• Carbon nanotubes for coherent spintronic devices
• Spin relaxation due to deflection coupling in nanotube quantum dots
• Coherence and Screening in Multi-Electron Spin Qubits
• Hyperfine-induced valley mixing and the spin-valley blockade in carbon-based quantum dots
• Pauli Blockade of Tunable Two-Electron Spin and Valley States in Graphene Quantum Dots
• Spin-valley blockade in carbon nanotube double quantum dots
• Charge and spin pumping through a double quantum dot
• Voltage-Selective Bi-directional Polarization and Coherent Rotation of Nuclear Spins in Quantum Dots
• Readout of carbon nanotube vibrations based on spin-phonon coupling
• Tilted potential induced coupling of localized states in a graphene nanoconstriction
• Leakage-current lineshapes from inelastic cotunneling in the Pauli spin blockade regime
• Inter-valley scattering induced by Coulomb interaction and disorder in carbon-nanotube quantum dots
• Two-channel Kondo physics in tunnel-coupled double quantum dots
• Electrical current and coupled electron-nuclear spin dynamics in double quantum dots
• Current rectification in double quantum dot through fermionic reservoir engineering
• Tight-binding simulations of electrically driven spin-valley transitions in carbon nanotube quantum dots
• Kramers polarization in strongly correlated carbon nanotube quantum dots
• Shape-sensitive Pauli blockade in a bent carbon nanotube
• Spin detection at elevated temperatures using a driven double quantum dot
• Current hot spot in the spin-valley blockade in carbon nanotubes
• g-Tensor Control in Bent Carbon Nanotube Quantum Dots
• Temperature-dependent dynamical nuclear polarization bistabilities in double quantum dots in the spin-blockade regime
• Full characterization of a carbon nanotube parallel double quantum dot
• Single Spin Detection with a Carbon Nanotube Double Quantum Dot
• The role of antisymmetric orbitals and electron-electron interactions on the two-particle spin and valley blockade in graphene double quantum dots
• Electronic structure of (1e,1h) states of carbon nanotube quantum dots
• Pauli spin blockade at room temperature in double-quantum-dot tunneling through individual deep dopants in silicon
• All-electric single electron spin-to-charge conversion