Spectroscopy of Magnetic Excitations in Magnetic Superconductors Using Vortex Motion

Details Spectroscopy of Magnetic Excitations in Magnetic Superconductors Using Vortex Motion Spectroscopy of Magnetic Excitations in Magnetic Superconductors Using Vortex Motion

2005-03-31

arxiv.org/abs/cond-mat/0504006v1

Physics

Condensed Matter

Superconductivity

4 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.95.207002

In magnetic superconductors a moving vortex lattice is accompanied by an ac magnetic field which leads to the generation of spin waves. At resonance conditions the dynamics of vortices in magnetic superconductors changes drastically, resulting in strong peaks in the dc I-V characteristics at voltages at which the washboard frequency of vortex lattice matches the spin wave frequency $\omega_s({\bf g})$, where ${\bf g}$ are the reciprocal vortex lattice vectors. We show that if washboard frequency lies above the magnetic gap, peaks in the I-V characteristics in borocarbides and cuprate layered magnetic superconductors are strong enough to be observed over the background determined by the quasiparticles.

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