Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111353
Title: Nanoscale Phase Separation in La0.7Ca0.3MnO3 Films: Evidence for Texture-driven Optical Anisotropy
Authors: Moskvin, A. S.
Zenkov, E. V.
Sukhorukov, Y. P.
Mostovshchikova, E. V.
Loshkareva, N. N.
Kaul, A. R.
Gorbenko, O. Y.
Issue Date: 2003
Publisher: IOP Publishing
Citation: Nanoscale Phase Separation in La0.7Ca0.3MnO3 Films: Evidence for Texture-driven Optical Anisotropy / A. S. Moskvin, E. V. Zenkov, Y. P. Sukhorukov et al. — DOI 10.30759/1728-9718-2021-4(73)-164-172 // Journal of Physics Condensed Matter. — 2003. — Vol. 15. — Iss. 17. — P. 2635-2643.
Abstract: The infrared optical absorption (0.1 eV < ℏω < 1.5 eV) in La0.7Ca0.3MnO3 films on LaAlO3 substrates exhibits a drastic temperature evolution of the spectral weight, evidencing an insulator-to-metal transition. Single-crystal films were found to reveal strong linear dichroism with anomalous spectral oscillations and fairly weak temperature dependence. Starting from the concept of phase separation, we develop an effective medium model to account for these effects. The optical anisotropy of the films is attributed to the texturization of the ellipsoidal inclusions of the quasimetal phase caused by a mismatch of the film and substrate and the twin texture of the latter.
Keywords: ANISOTROPY
ELLIPSOMETRY
INCLUSIONS
LIGHT ABSORPTION
METAL INSULATOR TRANSITION
PHASE SEPARATION
SINGLE CRYSTALS
SUBSTRATES
TEXTURES
THERMAL EFFECTS
TWINNING
DICHROISM
ELLIPSOIDAL INCLUSIONS
INFRARED OPTICAL ABSORPTION
LANTHANUM CALCIUM MANGANATE
OPTICAL ANISOTROPY
LANTHANUM COMPOUNDS
URI: http://hdl.handle.net/10995/111353
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 0038193633
ISSN: 0953-8984
DOI: 10.30759/1728-9718-2021-4(73)-164-172
metadata.dc.description.sponsorship: The work was supported by INTAS 01-0654, Federal programme (contract No 40.012.1.1. 1153-14/02), grants RFBR No 01-02-96404, No 02-02-16429, RFMC No E00-3.4-280, E02-3.4-392, CRDF No REC-005 and UR 01.01.042.
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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