Spin and Spin-Wave Dynamics in Josephson Junctions
arXiv:cond-mat/0412410 · doi:10.1103/PhysRevB.71.214520
Abstract
We extend the Keldysh formulation to quantum spin systems and derive exact equations of motion. This allows us to explore the dynamics of single spins and of ferromagnets when these are inserted between superconducting leads. Several new effects are reported. Chief amongst these are nutations of single S=1/2 spins in Josephson junctions. These nutations are triggered by the superconducting pairing correlations in the leads. Similarly, we find that on rather universal grounds, magnets display unconventional spin wave dynamics when placed in Josephson junctions. These lead to modifications in the tunneling current.
(14 pages, 5 figures)
References in corpus (7)
- Detection of Single Spin Decoherence in a Quantum Dot via Charge Currents
- Single Spin Dynamics and Decoherence in a Quantum Dot via Charge Transport
- Measurement induced quantum-classical transition
- Novel Spin Dynamics in a Josephson Junction
- Tunneling through an Anderson impurity between superconductors
- Josephson Current in the Presence of a Precessing Spin
- Nondemolition measurements of a single quantum spin using Josephson oscillations
Cited by in corpus (46)
- Superconducting Spintronics
- Magnetic moment manipulation by a Josephson current
- Spin dynamics in a superconductor / ferromagnet proximity system
- Real-time diagrammatic approach to transport through interacting quantum dots with normal and superconducting leads
- Spin Dynamics with Inertia in Metallic Ferromagnets
- Interaction of a Nanomagnet with a Weak Superconducting Link
- Nutation Resonance in Ferromagnets
- Probing the exchange field of a quantum-dot spin valve by a superconducting lead
- Magnetoelectric effects in Josephson junctions
- The role of interface transparency and spin-dependent scattering in diffusive ferromagnet/superconductor heterostructures
- Manipulation with Andreev states in spin active mesoscopic Josephson junctions
- Spin torques and magnetic texture dynamics driven by the supercurrent in superconductor/ferromagnet structures
- Coupled Superconducting Phase and Ferromagnetic Order Parameter Dynamics
- Resistive state of SFS Josephson junctions in the presence of moving domain walls
- Spin supercurrent in Josephson contacts with noncollinear ferromagnets
- Effective temperature and Gilbert damping of a current-driven localized spin
- Spin-Transfer and Exchange Torques in Ferromagnetic Superconductors
- Magnetization nutation induced by surface effects in nanomagnets
- Detection of spin reversal and nutations through current measurements
- Functional superconductor interfaces from broken time-reversal symmetry
- Josephson-current induced conformational switching of a molecular quantum dot
- Voltage dependence of Landau-Lifshitz-Gilbert damping of a spin in a current driven tunnel junction
- Subnanosecond switching of local spin-exchange coupled to ferromagnets
- An Anisotropic Landau-Lifschitz-Gilbert model of dissipation in qubits
- FMR induced Josephson Current in a Superconductor/Ferromagnet/Superconductor Junction
- Spin-polarized Shapiro steps and spin-precession-assisted multiple Andreev reflection
- Magnetization induced dynamics of a Josephson junction coupled to a nanomagnet
- Ferromagnetic resonance with a magnetic Josephson junction
- Spin transport and tunable Gilbert damping in a single-molecule magnet junction
- Kapitsa pendulum effects in Josephson junction + nanomagnet under external periodic drive
- Josephson current through a quantum dot coupled to a molecular magnet
- Composite excitation of Josephson phase and spin waves in Josephson junctions with ferromagnetic insulator
- Spin supercurrent in superconductor/ferromagnet van-der-Waals heterostructures
- Magnetoelectric effects in superconductor/ferromagnet bilayers
- Application of Resonance Perturbation Theory to Dynamics of Magnetization in Spin Systems Interacting with Local and Collective Bosonic Reservoirs
- Vibrating Superconducting Island in a Josephson Junction
- Proximity effect and p-wave superconductivity in s-wave superconductor/helimagnet heterostructures
- Critical Josephson current through a bistable single-molecule junction
- Zero-Field Fiske Resonance Coupled with Spin-waves in Ferromagnetic Josephson Junctions
- Magnetism induced by nonlocal spin-entangled electrons in a superconducting spin-valve
- Spin transport through a nanojunction with a precessing anisotropic molecular spin: Quantum interference and spin-transfer torque
- Triplet correlations in superconductor/antiferromagnet heterostructures: dependence on type of antiferromagnetic ordering
- Spin nutation effects in molecular nanomagnetsuperconductor tunnel junctions
- Effect of uniaxial magnetic anisotropy on charge transport in a junction with a precessing anisotropic molecular spin
- Hybrid collective excitations in topological superconductor/ferromagnetic insulator heterostructures
- Long-range superharmonic Josephson current and spin-triplet pairing correlations in a junction with ferromagnetic bilayers