Chirality and magnetism: Free electron on an infinite helix, NCD, MCD, and magnetochiral dichroism
The free electron on a quasi-infinite helix exemplifies succinctly the different selection rules for natural circular, magnetic circular and magnetochiral dichroism. The free electron on a helix with periodic boundary conditions is undoubtedly one of the simplest quantum chemical models exhibiting b...
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Published in | Chemical physics letters Vol. 481; no. 4; pp. 166 - 168 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
2009
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | The free electron on a quasi-infinite helix exemplifies succinctly the different selection rules for natural circular, magnetic circular and magnetochiral dichroism.
The free electron on a helix with periodic boundary conditions is undoubtedly one of the simplest quantum chemical models exhibiting both chirality and orbital angular momentum. Subjected to a light beam traveling parallel to the helix axis, the model exhibits natural circular dichroism and, assuming a lifting of the magnetic degeneracy by an external static magnetic field, also magnetic circular dichroism and magnetochiral dichroism. We believe that the model illustrates well the interplay of chirality and magnetism in a pure magnetic state, and that it could also be of interest in the study of the recently discovered chiral ferromagnets. |
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ISSN: | 0009-2614 1873-4448 |
DOI: | 10.1016/j.cplett.2009.09.066 |