''Soft'' Anharmonic Vortex Glass in Ferromagnetic Superconductors
Ferromagnetic order in superconductors can induce a spontaneous vortex (SV) state. For external field H=0 , rotational symmetry guarantees a vanishing tilt modulus of the SV solid, leading to drastically different behavior than that of a conventional, external-field-induced vortex solid. We show that quenched disorder and anharmoinc effects lead to elastic moduli that are wave-vector dependent out to arbitrarily long length scales, and non-Hookean elasticity. The latter implies that for weak external fields H , the magnetic induction scales universally like B(H){approx}B(0)+cH{sup {alpha}} , with {alpha}{approx}0.72 . For weak disorder, we predict the SV solid is a topologically ordered glass, in the ''columnar elastic glass'' universality class.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40277025
- Journal Information:
- Physical Review Letters, Vol. 87, Issue 2; Other Information: DOI: 10.1103/PhysRevLett.87.027001; Othernumber: PRLTAO000087000002027001000001; 008127PRL; PBD: 9 Jul 2001; ISSN 0031-9007
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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