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Field-induced soft mode hardening in multilayers
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10.1063/1.2967336
/content/aip/journal/apl/93/5/10.1063/1.2967336
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/5/10.1063/1.2967336
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Terahertz transmission spectra of the investigated samples. (a) Ratio of the power transmittances with and without bias. (b) Phase difference between the transmittances with and without bias.

Image of FIG. 2.
FIG. 2.

(a) Real and (b) imaginary parts of the permittivity of STO layers for selected external fields; symbols: experiment; lines: fits using Eq. (1). In order to clarify the plot, data corresponding to were vertically shifted by 400, 800, 1200, and 1600 with increasing field. The vertical bars show the error of our absolute evaluation as deduced from the fitted value of .

Image of FIG. 3.
FIG. 3.

Soft mode frequency as a function of the external electric field. The numbers indicate the order of individual measurements in this sequence to illustrate the observed hysteresis. Circles: measured data; crosses: experimental points from two to six mirrored to negative bias; dotted line: fit of the low-field part of the data using Eq. (3); solid line: linear fit of the saturated part of the dependence.

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/content/aip/journal/apl/93/5/10.1063/1.2967336
2008-08-07
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Field-induced soft mode hardening in SrTiO3/DyScO3 multilayers
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/5/10.1063/1.2967336
10.1063/1.2967336
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