Terahertz response of SrTiO3 based heterostructures: Influence of strain temperature and electric field

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00486580" target="_blank" >RIV/68378271:_____/14:00486580 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1109/IRMMW-THz.2014.6956088" target="_blank" >http://dx.doi.org/10.1109/IRMMW-THz.2014.6956088</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/IRMMW-THz.2014.6956088" target="_blank" >10.1109/IRMMW-THz.2014.6956088</a>

Result language

angličtina

Original language name

Terahertz response of SrTiO3 based heterostructures: Influence of strain temperature and electric field

Original language description

A systematic study of strained SrTiO3/DyScO3 heterostructures was performed using time-domain terahertz spectroscopy in the temperature range from 20 to 294 K. Interdigitated electrodes deposited on top of the structures allowed probing of the terahertz response upon an applied electric field. All studied structures underwent the phase transition close to room temperature. Evolution of the complex dielectric spectra with temperature and electric bias was described by a general model involving a harmonic oscillator (soft mode) coupled to a Debye relaxation (central mode). At high temperatures, the soft mode is responsible for nearly all the changes observed in the spectra with temperature and applied electric field. At low temperatures, deep in the ferroelectric phase, the soft mode significantly hardens and loses its importance for the terahertz dynamics, the central mode becomes stronger and it almost completely determines the shape of the measured spectra.n

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of the 39th International Conference on Infrared Millimeter and Terahertz Waves

ISBN

978-147993877-3

ISSN

2162-2027

e-ISSN

—

Number of pages

2

Pages from-to

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Publisher name

IEEE

Place of publication

New York

Event location

Tucson

Event date

Sep 14, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000378889200099