1.
Phys Rev Lett
; 116(9): 093903, 2016 Mar 04.
Artigo
em Inglês
| MEDLINE
| ID: mdl-26991178
RESUMO
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.