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Coexistence of CDW with staggered superconductivity in a ferromagnetic material

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Thalmeier,  P.
Peter Thalmeier, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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引用

Georgiou, M., Varelogiannis, G., & Thalmeier, P. (2008). Coexistence of CDW with staggered superconductivity in a ferromagnetic material. Europhysics Letters, 82:, pp. 67007-p1-67007-p5. doi:10.1209/0295-5075/82/67007.


引用: http://hdl.handle.net/11858/00-001M-0000-0015-2780-4
要旨
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 UGe2, suggesting that SC in this material may be staggered coexisting and competing with a CDW state. Copyright (C) EPLA, 2008.