An Inhomogeneous Superconducting State in a Ferromagnetic Superconductor
An inhomogeneous superconducting state under a ferromagnetic molecular field is investigated theoretically. This problem is solved exactly within the mean field approximation for a one-dimensional electron band. It is found that the solution gives a spin modulated structure associated with a spatially inhomogeneous superconducting order parameter and a two-gap structure in the energy spectrum. Experiments on ErRh4B4 are interpreted by this solution.
KeywordsVortex Ferro Maki
Unable to display preview. Download preview PDF.
- 1.V.L. Ginzburg: Sov. Phys. JETP 4 (1957) 153.Google Scholar
- 2.A.A. Abrikosov and L.P. Gor’kov: Sov. Phys. JETP 12 (1961) 1243.Google Scholar
- 3.See for example “Superconductivity in Ternary Compounds Vols.1 and 2”, edited by M.B. Mapel and O.Fischer (Springer Verlag, New York, 1982).Google Scholar
- 28.S.K. Sinha and J. Kjems: private communication.Google Scholar
- 29.Recently a tunneling experiment was done on a polycrystalline ERB. The data shows some unusual structures which may reflect the structure of the density of state for the intermediate phase. L.-J. Lin, A.M. Goldman, A.M. Kadin and C.P. Umbach: Phys. Rev. Lett. 51 (1983) 2151.Google Scholar