Phase-sensitive second-harmonic microscopy reveals polarity of topologically centrosymmetric molecular crystals

Autor:	Peter Rechsteiner, S. Kluge, F. Budde, I. Dohnke, Jürg Hulliger
Rok vydání:	2002
Předmět:	Crystallography Dipole Physics and Astronomy (miscellaneous) Solid-state physics Chemical physics Thermodynamic equilibrium Chemistry Polarity (physics) Microscopy Surface second harmonic generation Crystal structure Pyroelectricity
Zdroj:	Applied Physics Letters. 81:247-249
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.1492850
Popis:	Phase-sensitive second-harmonic microscopy is applied to reveal grow-in polarity in topologically centrosymmetric crystals of 4-chloro-4′-nitrostilben. As predicted by the Markow model of layer-by-layer polarity formation, growth along + and −b-direction in P21/c is producing optical nonlinearity in both sectors associated with the b axis. Present experiments show that formation of a pyroelectric symmetry class is a stochastic property of molecular crystals grown from dipolar compounds and near to thermodynamic equilibrium.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::65bd83f661fc591a62d7ca4acf235928 https://doi.org/10.1063/1.1492850 Zobrazit plný text záznamu