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arXiv · 0709.1025

Coexistence of CDW with staggered superconductivity in a ferromagnetic material

Marios Georgiou·Georgios Varelogiannis·Peter Thalmeier
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Abstract

In usual superconductivity (SC), the pairs have zero total momentum irrespective of their symmetry. Staggered SC would involve, instead, pairs with a finite commensurate total momentum, but such exotic states have never been proven to be realized in nature. Here we study for the first time the influence of particle-hole asymmetry on the competition of staggered SC with Charge Density Waves (CDW) in a ferromagnetic medium. We obtain unprecedented situations in which CDW and staggered SC coexist. We also obtain cases of a SC dome near the collapse of a CDW state as well as cascades of transitions that exhibit remarkable similarities with the pressure phase diagram in UGe$_2$ suggesting that SC in this material may be staggered coexisting and competing with a CDW state.

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Marios Georgiou, Georgios Varelogiannis, Peter Thalmeier. 2008-03-13. Coexistence of CDW with staggered superconductivity in a ferromagnetic material. https://doi.org/10.1209/0295-5075/82/67007

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