Infrared vibrations in LaSrGaO4 and LaSrAlO4

@article{327691,
   author = {Humlíček, Josef and Henn, Ralf and Cardona, Manuel},
   article_location = {USA},
   article_number = {21},
   language = {eng},
   issn = {0163-1829},
   journal = {Phys. Rev. B},
   title = {Infrared vibrations in LaSrGaO4 and LaSrAlO4},
   volume = {61},
   year = {2000}
}

TY  - JOUR
ID  - 327691
AU  - Humlíček, Josef - Henn, Ralf - Cardona, Manuel
PY  - 2000
TI  - Infrared vibrations in LaSrGaO4 and LaSrAlO4
JF  - Phys. Rev. B
VL  - 61
IS  - 21
SP  - 14554
EP  - 14554
PB  - The American Phys. Society
SN  - 01631829
N2  - 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.
ER  - 

HUMLÍČEK, Josef, Ralf HENN a Manuel CARDONA. Infrared vibrations in LaSrGaO4 and LaSrAlO4. \textit{Phys. Rev. B}. USA: The American Phys. Society, 2000, roč.~61, č.~21, s.~14554-14563. ISSN~0163-1829.