HUMLÍČEK, Josef, Ralf HENN and Manuel CARDONA. Infrared vibrations in LaSrGaO4 and LaSrAlO4. Phys. Rev. B. USA: The American Phys. Society, 2000, vol. 61, No 21, p. 14554-14563. ISSN 0163-1829.
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Basic information
Original name Infrared vibrations in LaSrGaO4 and LaSrAlO4
Authors HUMLÍČEK, Josef, Ralf HENN and Manuel CARDONA.
Edition Phys. Rev. B, USA, The American Phys. Society, 2000, 0163-1829.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10302 Condensed matter physics
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 3.065
RIV identification code RIV/00216224:14310/00:00002309
Organization unit Faculty of Science
UT WoS 000087438700053
Changed by Changed by: prof. RNDr. Josef Humlíček, CSc., učo 307. Changed: 9/11/2001 11:11.
Abstract
We have studied the c-axis and the in-plane infrared response of the anisotropic crystals of LnSrGaPO(4) and LaSrAlO4. We identify both transverse and longitudinal phonons. The lattice bands show pronounced features of mode coupling, which we attribute to the random distribution of La and Sr atoms in the lattice. We present a scheme to identify and quantify the coupling that induces the asymmetric line shapes. We use the results to discuss infrared-active vibrations of other compounds, including La2CuO4.
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MSM 143100002, plan (intention)Name: Fyzikální vlastnosti nových materiálů a vrstevnatých struktur
Investor: Ministry of Education, Youth and Sports of the CR, Physical properties of new materials and layered structures
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