Nematicity as a route to a magnetic-field–induced spin density wave order: Application to the high-temperature cupratesH.-Y. Kee1 and D. Podolsky1, 2
1 Department of Physics, University of Toronto - Toronto, Ontario M5S 1A7 Canada
2 Physics Department, Technion - Haifa 32000, Israel
received 11 March 2009; accepted in final form 21 May 2009; published June 2009
published online 22 June 2009
The electronic nematic order characterized by broken rotational symmetry has been suggested to play an important role in the phase diagram of the high-temperature cuprates. We study the interplay between the electronic nematic order and a spin density wave order in the presence of a magnetic field. We show that a cooperation of the nematicity and the magnetic field induces a finite coupling between the spin density wave and spin-triplet staggered flux orders. As a consequence of such a coupling, the magnon gap decreases as the magnetic field increases, and it eventually condenses beyond a critical magnetic field leading to a field-induced spin density wave order. Both commensurate and incommensurate orders are studied, and the experimental implications of our findings are discussed.
73.22.Gk - Broken symmetry phases.
© EPLA 2009