Observation of unusual surface ordering in a uniaxial Sm-A phase formed by a highly biaxial compound |
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Authors: | Olson D A Han X F Cady A Weissflog W Huang C C |
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Affiliation: | School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA. |
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Abstract: | We have studied one banana-shaped compound using null-transmission ellipsometry. By studying free-standing films of various thicknesses we confirm that this compound exhibits the Sm-A phase. This is the first banana-shaped compound with a relatively small bend angle (approximately 140 degrees) in which a uniaxial phase has been observed. At the lower temperature end of the Sm-A phase we observe unusual ordering at the surface of the film. |
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