A chiral triplet quasi-two-dimensional superconductor in a parallel magnetic field

A. G. Lebed

*Department of Physics, University of Arizona, 1118 E. 4-th Street, Tucson, AZ 85721, USA*

L. D. Landau Institute for Theoretical Physics, Russian Academy of Sciences, 17334 Moscow, Russia

**Abstract**
We calculate the parallel upper critical magnetic field
for an in-plane isotropic quasi-two-dimensional
(Q2D) chiral triplet superconductor at zero temperature, T=0. In
particular, the ratio
is defined, where is the
so-called Ginzburg-Landau slope of the upper critical magnetic
field, T_{c} is a superconducting transition temperature at H=0.
We show that the theoretically obtained above mentioned value
strongly contradicts to the experimentally measured ones in a
candidate for a chiral triplet superconductivity Sr_{2}RuO_{4},
which provides one more argument against the chiral triplet
scenario of superconductivity in this compound. Our results may be
useful for establishing chiral triplet superconductivity in other
Q2D candidates for this phenomenon.