Quantum Stabilization of the -Magnetization Plateau in
Physical review letters, 2009•APS
We consider the phase diagram of a spatially anisotropic 2D triangular antiferromagnet in a
magnetic field. Classically, the ground state is umbrellalike for all fields, but we show that the
quantum phase diagram is much richer and contains a 1/3-magnetization plateau, two
commensurate planar states, two incommensurate chiral umbrella phases, and, possibly, a
spin density wave state separating the two chiral phases. Our analysis sheds light on
several recent experimental findings for Cs 2 CuBr 4.
magnetic field. Classically, the ground state is umbrellalike for all fields, but we show that the
quantum phase diagram is much richer and contains a 1/3-magnetization plateau, two
commensurate planar states, two incommensurate chiral umbrella phases, and, possibly, a
spin density wave state separating the two chiral phases. Our analysis sheds light on
several recent experimental findings for Cs 2 CuBr 4.
We consider the phase diagram of a spatially anisotropic 2D triangular antiferromagnet in a magnetic field. Classically, the ground state is umbrellalike for all fields, but we show that the quantum phase diagram is much richer and contains a -magnetization plateau, two commensurate planar states, two incommensurate chiral umbrella phases, and, possibly, a spin density wave state separating the two chiral phases. Our analysis sheds light on several recent experimental findings for .
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