A Aperis et al 2008 J. Phys.: Condens. Matter 20 434235 doi:10.1088/0953-8984/20/43/434235
A Aperis1, G Varelogiannis1, P B Littlewood2 and B D Simons2
Show affiliationsWe have studied the competition and coexistence of staggered triplet superconductivity (SC) with d-wave singlet SC and spin density waves (SDWs) in the mean-field approximation. Detailed numerical studies demonstrate that particle–hole asymmetry mixes these states and therefore they are simultaneously present. Even more interesting were the results of our study of the influence of a uniform magnetic field. We observe novel transitions that show the characteristics of Fulde–Ferrel phases, yet they concern transitions to different combinations of the above orders. For example, above a given field, in a particle–hole symmetric system we observe a transition from d-wave singlet SC to a state in which d-wave singlet SC coexists with staggered triplet SC and SDWs. We believe our results may provide, among others, a direct explanation of recent puzzles about the Fulde–Ferrel like states that are apparently observed in CeCoIn5.
Issue 43 (29 October 2008)
Received 4 September 2008
Published 9 October 2008
A Aperis et al 2008 J. Phys.: Condens. Matter 20 434235
A B Harris et al 2008 J. Phys.: Condens. Matter 20 434202
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