Quantum limit and reentrant superconducting phases in the Q1D conductor Li0.9Mo6O17
Abstract
We solve the theoretical problem of restoration of superconductivity in a triplet quasi-one-dimensional, layered superconductor in an ultra-high magnetic field. With the field perpendicular to the conducting chains as well as having a component normal to the layers, we suggest a new quantum limit superconducting phase and derive an analytical expression for the transition temperature as a function of magnetic field, T*(H). Using our theoretical results along with the known band and superconducting parameters of the presumably triplet superconductor Li0.9Mo6O17, we determine the orientation of H that maximizes T*(H) for a given value of the field. Subsequently, we show that reentrant superconductivity in this compound is attainable with currently available non-destructive pulsed magnetic fields of order H ≃ 100 T, when such fields are perpendicular to conducting chains and parallel to the layers. For its possible experimental discovery, we give a detailed specification on how small angular inclinations of the magnetic field from its best experimental geometry decrease the superconducting transition temperature of the reentrant phase.
- Publication:
-
Physica B Condensed Matter
- Pub Date:
- March 2015
- DOI:
- 10.1016/j.physb.2014.11.078
- Bibcode:
- 2015PhyB..460..231S
- Keywords:
-
- 74.20.Rp;
- 74.70.Kn;
- 74.25.Op