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Article Abstract
We show that, measured in a backscattering geometry, the polar Kerr effect is absent if the nonlocal electromagnetic response function respects Onsager symmetry, characteristic of thermodynamic states that preserve time-reversal symmetry. A key element is an expression for the reflectivity tensor in terms of the retarded Green's function.
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| http://dx.doi.org/10.1103/PhysRevLett.116.093903 | DOI Listing |
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