Publication: Properties and detection of spin nematic order in strongly correlated electron systems
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Date
2005
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IOP Publishing
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Podolsky, Daniel, and Eugene Demler. 2005. “Properties and Detection of Spin Nematic Order in Strongly Correlated Electron Systems.” New J. Phys. 7 (February 17): 59–59. doi:10.1088/1367-2630/7/1/059.
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Abstract
A spin nematic is a state which breaks spin SU(2) symmetry while preserving translational and time reversal symmetries. Spin nematic order can arise naturally from charge fluctuations of a spin stripe state. Focusing on the possible existence of such a state in strongly correlated electron systems, we build a nematic wave function starting from a t-J-type model. The nematic is a spin-2 operator, and therefore does not couple directly to neutrons. However, we show that neutron scattering and Knight-shift experiments can detect the spin anisotropy of electrons moving in a nematic background. We find the mean-field phase diagram for the nematic taking into account spin–orbit effects.
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