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Multiple Stable States with In‐Plane Anisotropy in Ultrathin YMnO 3 Films
Author(s) -
Sheng Zhigao,
Ogawa Naoki,
Ogimoto Yasushi,
Miyano Kenjiro
Publication year - 2010
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201002743
Subject(s) - materials science , anisotropy , condensed matter physics , epitaxy , homogeneous space , polarization (electrochemistry) , second harmonic generation , symmetry (geometry) , thin film , nanotechnology , optics , physics , geometry , laser , chemistry , mathematics , layer (electronics)
Coherent epitaxial YMnO 3 ultrathin films have been built and their symmetries were studied using second harmonic generation technique. The underlying symmetry, trigonality, was revealed by the pseudomorphic strain effect and a new in‐plane component with six‐fold symmetry emerges in addition to usual polarization along c ‐axis. Its in‐plane anisotropy provides possible multiple states which is significant for its potential applications.