Spin quadrupoletronics: moving spin anisotropy around

Abstract

We show that spin anisotropy can be transferred to an isotropic system by transport of spin quadrupole moment. We derive the quadrupole moment current and continuity equation and study a high-spin valve structure consisting of two ferromagnets coupled to a quantum dot probing an impurity spin. The quadrupole back-action on their coupled spin results in spin torques and anisotropic spin relaxation which do not follow from standard spin current considerations. We demonstrate the detection of the impurity spin by charge transport and its manipulation by electric fields.

v2 updated arXiv reference [6]

References in corpus (13)

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• Electric-field controlled spin reversal in a quantum dot with ferromagnetic contacts
• Electric Field Controlled Magnetic Anisotropy in a Single Molecule
• Electrical manipulation of spin states in a single electrostatically gated transition-metal complex
• Observation of the underscreened Kondo effect in a molecular transistor
• Tunneling Spectra of Individual Magnetic Endofullerene Molecules
• Spin effects in transport through single-molecule magnets in the sequential and cotunneling regimes
• Single Electron Transport in electrically tunable nanomagnets
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• Transport through quantum-dot spin valves containing magnetic impurities
• All-electric-spin control in interference single electron transistors
• Single Spin Transport Spectroscopy - Current Blockade and Spin Decay

Cited by in corpus (16)

• Spin Excitations and Correlations in Scanning Tunneling Spectroscopy
• Spintronic magnetic anisotropy
• The formation of nonequilibrium steady states in interacting double quantum dots: When coherences dominate the charge distribution
• Transport mirages in single-molecule devices
• Iterative path integral summation for nonequilibrium quantum transport
• Spin resonance without spin splitting
• Underscreened Kondo effect in S=1 magnetic quantum dots: Exchange, anisotropy and temperature effects
• Duality for open fermion systems: energy-dependent weak coupling and quantum master equations
• Cooling a magnetic nanoisland by spin-polarized currents
• Coherent Backaction of Quantum Dot Detectors: Qubit Isospin Precession
• Theory of transport through noncollinear single-electron spin-valve transistors
• Renormalization-group analysis of a spin-1 Kondo dot: Non-equilibrium transport and relaxation dynamics
• Semiclassical spin-spin dynamics and feedback control in transport through a quantum dot
• Transport of spin-anisotropy without spin currents
• Transport and semiclassical dynamics of coupled quantum dots interacting with a local magnetic moment
• Current fluctuations of noncollinear single-electron spin-valve transistors