Optical investigations on the biaxial smectic-A phase of a bent-core compound

S. T. Wang; X. F. Han; A. Cady; Z. Q. Liu; A. Kamenev; L. Glazman; B. K. Sadashiva; R. Amaranatha Reddy; C. C. Huang

doi:10.1103/PhysRevE.70.061705

Optical investigations on the biaxial smectic-A phase of a bent-core compound

S. T. Wang, X. F. Han, A. Cady, Z. Q. Liu, A. Kamenev, L. Glazman, B. K. Sadashiva, R. Amaranatha Reddy, C. C. Huang

Research output: Contribution to journal › Article › peer-review

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Abstract

A null transmission ellipsometry study on free standing films of a band-core compound was reported. The critical exponent associated with the biaxiality through the uniaxial-antiferoelectric biaxial Sm A transition was measured to be 0.82±0.04. It was demonstrated that the critical behavior of the optical biaxiality with the order parameter being a vector was described by the secondary-order parameter of the three-dimensional XY model. A remarkable even-odd layering effect exhibited by the surface layers of freestanding films under an applied electric field in the film plane was also observed.

Original language	English (US)
Article number	061705
Pages (from-to)	061705-1-061705-6
Journal	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume	70
Issue number	6 1
DOIs	https://doi.org/10.1103/PhysRevE.70.061705
State	Published - Dec 1 2004

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Optical investigations on the biaxial smectic-A phase of a bent-core compound. / Wang, S. T.; Han, X. F.; Cady, A.; Liu, Z. Q.; Kamenev, A.; Glazman, L.; Sadashiva, B. K.; Reddy, R. Amaranatha; Huang, C. C.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 70, No. 6 1, 061705, 01.12.2004, p. 061705-1-061705-6.

Research output: Contribution to journal › Article › peer-review

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abstract = "A null transmission ellipsometry study on free standing films of a band-core compound was reported. The critical exponent associated with the biaxiality through the uniaxial-antiferoelectric biaxial Sm A transition was measured to be 0.82±0.04. It was demonstrated that the critical behavior of the optical biaxiality with the order parameter being a vector was described by the secondary-order parameter of the three-dimensional XY model. A remarkable even-odd layering effect exhibited by the surface layers of freestanding films under an applied electric field in the film plane was also observed.",

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AU - Han, X. F.

AU - Cady, A.

AU - Liu, Z. Q.

AU - Kamenev, A.

AU - Glazman, L.

AU - Sadashiva, B. K.

AU - Reddy, R. Amaranatha

AU - Huang, C. C.

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Optical investigations on the biaxial smectic-A phase of a bent-core compound

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