Jonas Benedikt Hauck(Institute for Theoretical Solid State Physics, RWTH Aachen)
Description
The superconducting symmetry of SrRuO is one of the long standing problems of material science. Even though the normal state of the material can be well described in terms of density functional theory plus dynamical mean-field theory calculations, the character of the superconducting state remains elusive. In this paper we investigate the behavior of the superconducting order parameter under strain along the [1 0 0] direction, using density functional theory plus functional renormalization group simulations for a 2D model. We find a dominant superconductor in the -orbital with no closely related additional order parameter component. We can reproduce the experimentally observed change of under strain within this framework and propose a simple mechanism explaining the observed behavior. By comparing theory and experiment, we can construct further constrains for a possible degenerate partner of the superconducting state.
Primary author
Jonas Benedikt Hauck(Institute for Theoretical Solid State Physics, RWTH Aachen)
Co-authors
Prof.
Dante M. Kennes(Institute for Theoretical Solid State Physics, RWTH Aachen University and JARA Fundamentals of Future Information Technology, 52062 Aachen, Germany and Max Planck Institute for the Structure and Dynamics of Matter and Center Free-Electron Laser Science, Hamburg, Germany})
Dr
Sophie Beck(Center for Computational Quantum Physics, Flatiron Institute, 162 Fifth Avenue, New York, New York 10010, USA)
Prof.
Antoine Georges(Center for Computational Quantum Physics, Flatiron Institute, 162 Fifth Avenue, New York, New York 10010, USA, Centre de Physique Théorique, Ecole Polytechnique, CNRS, Institut Polytechnique de Paris, 91128 Palaiseau Cedex, France, Collège de France, 11 place Marcelin Berthelot, 75005 Paris, France and DQMP, Université de Genève, 24 quai Ernest Ansermet, CH-1211 Genève, Suisse)
Dr
Olivier Gingras(Center for Computational Quantum Physics, Flatiron Institute, 162 Fifth Avenue, New York, New York 10010, USA)