Transport across a carbon nanotube quantum dot contacted with ferromagnetic leads: experiment and non-perturbative modeling
arXiv:1502.02005 · doi:10.1103/PhysRevB.91.195402
Abstract
We present measurements of tunneling magneto-resistance (TMR) in single-wall carbon nanotubes attached to ferromagnetic contacts in the Coulomb blockade regime. Strong variations of the TMR with gate voltage over a range of four conductance resonances, including a peculiar double-dip signature, are observed. The data is compared to calculations in the "dressed second order" (DSO) framework. In this non-perturbative theory, conductance peak positions and linewidths are affected by charge fluctuations incorporating the properties of the carbon nanotube quantum dot and the ferromagnetic leads. The theory is able to qualitatively reproduce the experimental data.
arXiv comment14 pages, 13 figures
References in corpus (27)
- Electronic spin transport and spin precession in single graphene layers at room temperature
- Coupling of Spin and Orbital Motion of Electrons in Carbon Nanotubes
- Electric Field Control of Spin Transport
- Theory of Transport through Quantum-Dot Spin Valves in the Weak-Coupling Regime
- NRG study of the Kondo effect in the presence of itinerant-electron ferromagnetism
- Nonequilibrium spintronic transport through an artificial Kondo impurity: Conductance, magnetoresistance and shot noise
- Large spin-orbit coupling in carbon nanotubes
- Spin effects in single electron tunneling
- Universality of the Kondo effect in quantum dots with ferromagnetic leads
- Ferromagnetic proximity effect in F-QDot-S device
- Spin-dependent Quantum Interference in Single-Wall Carbon Nanotubes with Ferromagnetic Contacts
- Zero-dimensional spin accumulation and spin dynamics in a mesoscopic metal island
- Permalloy-based carbon nanotube spin-valve
- Magnetoresistance of a quantum dot with spin-active interfaces
- Broken SU(4) symmetry in a Kondo-correlated carbon nanotube
- Gated Spin Transport through an Individual Single Wall Carbon Nanotube
- Gate-dependent tunneling-induced level shifts observed in carbon nanotube quantum dots
- Interplay of Kondo effect and strong spin-orbit coupling in multi-hole ultraclean carbon nanotubes
- Non-collinear single-electron spin-valve transistors
- Controlling spin in an electronic interferometer with spin-active interfaces
- Spin transport across carbon nanotube quantum dots
- Fabrication and characterisation of nanospintronic devices
- Transport across an Anderson quantum dot in the intermediate coupling regime
- Linear conductance in Coulomb-blockade quantum dots in the presence of interactions and spin
- Sources of negative tunneling magneto-resistance in multilevel quantum dots with ferromagnetic contacts
- Kramers polarization in strongly correlated carbon nanotube quantum dots
- Anomalous magnetization of a carbon nanotube as an excitonic insulator
Cited by in corpus (8)
- Towards Noise Simulation in Interacting Nonequilibrium Systems Strongly Coupled to Baths
- Blocking transport resonances via Kondo entanglement in quantum dots
- Feynman-Vernon influence functional approach to quantum transport in interacting nanojunctions: An analytical hierarchical study
- Large voltage-tunable spin valve based on a double quantum dot
- Theory of box-model hyperfine couplings and transport signatures of long-range nuclear-spin coherence in a quantum-dot spin valve
- Impact of tunnel barrier strength on magnetoresistance in carbon nanotubes
- Precession of entangled spin and pseudospin in double quantum dots
- Manipulation of a single magnetic atom using polarized single electron transport in a double quantum dot