Er2Ti2O7: Evidence of quantum order by disorder in a frustrated antiferromagnet
UNSPECIFIED. (2003) Er2Ti2O7: Evidence of quantum order by disorder in a frustrated antiferromagnet. PHYSICAL REVIEW B, 68 (2). -. ISSN 1098-0121Full text not available from this repository.
Official URL: http://dx.doi.org/10.1103/PhysRevB.68.020401
Er2Ti2O7 has been suggested to be a realization of the frustrated <111> XY pyrochlore lattice antiferromagnet, for which theory predicts fluctuation-induced symmetry breaking in a highly degenerate ground state manifold. We present a theoretical analysis of the classical model compared to neutron scattering experiments on the real material, both below and above T-N=1.173(2) K. The model correctly predicts the ordered magnetic structure, suggesting that the real system has order stabilized by zero-point quantum fluctuations that can be modeled by classical spin wave theory. However, the model fails to describe the excitations of the system, which show unusual features.
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||PHYSICAL REVIEW B|
|Publisher:||AMERICAN PHYSICAL SOC|
|Official Date:||1 July 2003|
|Number of Pages:||4|
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