Quantum Tunneling of the Magnetic Moment in the S/F/S Josephson ${\mathbf{\phi }}_0$-Junction

Abstract

We show that the S/F/S Josephson ${\phi }_0$-junction permits detection of macroscopic quantum tunneling and quantum oscillation of the magnetic moment by measuring the ac voltage across the junction. Exact expression for the tunnel splitting renormalized by the interaction with the superconducting order parameter is obtained. It is demonstrated that magnetic tunneling may become frozen at a sufficiently large ${\phi }_0$. The quality factor of quantum oscillations of the magnetic moment due to finite Ohmic resistance of the junction is computed. It is shown that magnetic tunneling rate in the ${\phi }_0$-junction can be controled by the supercurrent, with no need for the magnetic field.

4 pages, 1 figure

References in corpus (5)

• Superconducting Spintronics
• Direct coupling between magnetism and superconducting current in Josephson Phi junction
• Direct Observation of Quantum Coherence in Single-Molecule Magnets
• Magnetic moment manipulation by a Josephson current
• Interaction of a Nanomagnet with a Weak Superconducting Link

Cited by in corpus (12)

• Magnetization reversal by superconducting current in ${\phi }_0$ Josephson junctions
• Ferromagnetic resonance and magnetic precessions in ${\phi }_0$ junction
• Resistive state of SFS Josephson junctions in the presence of moving domain walls
• Analytical criteria for magnetization reversal in ${\phi }_0$ Josephson junction
• Electrical control of magnetization in S/F/S junctions on a 3D topological insulator
• Magnetization reversal in S/F/S Josephson junctions on a 3D topological insulator
• Locking of magnetization and Josephson oscillations at ferromagnetic resonance in ${\phi }_0$ junction under external radiation
• Electrically modulated SQUID with single Josephson junction coupled by a time-reversal breaking Weyl semimetal thin film
• Manipulating Magnetic Moments by Superconducting Currents
• Collective magnetic and plasma excitations in Josephson $\psi$ junctions
• Superluminal Propagation of Composite Collective Modes in Superconductor-Ferromagnet Heterostructures
• Hybrid collective excitations in topological superconductor/ferromagnetic insulator heterostructures