Volume 86, Number 5, June 2009
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||22 June 2009|
Nematicity as a route to a magnetic-field–induced spin density wave order: Application to the high-temperature cuprates
Department of Physics, University of Toronto - Toronto, Ontario M5S 1A7 Canada
2 Physics Department, Technion - Haifa 32000, Israel
Accepted: 21 May 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.
PACS: 73.22.Gk – Broken symmetry phases
© EPLA, 2009
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