TY - JOUR
T1 - Infrared optical constants of insulators determined by high resolution electron energy loss spectroscopy
AU - Thiry, Paul
AU - Liehr, Michael
AU - Pireaux, Jean-Jacques
AU - Caudano, Roland
PY - 1984
Y1 - 1984
N2 - High-resolution electron-energy-loss spectroscopy can be applied to insulators by use of an auxiliary electron gun. Fuchs-Kliewer phonons of the MgO(001) surface were recorded with excellent resolution (27 cm−1). Specular intensities were analyzed for angles of incidence from 40° to 85°. Data processing by use of the dielectric-function theory yields optical constants as accurate as by IR spectroscopy: resonance frequency ωTO=393±2 cm−1; damping γ=35±2 cm−1, and Szigeti charge e∗=(0.83±0.07)e.
AB - High-resolution electron-energy-loss spectroscopy can be applied to insulators by use of an auxiliary electron gun. Fuchs-Kliewer phonons of the MgO(001) surface were recorded with excellent resolution (27 cm−1). Specular intensities were analyzed for angles of incidence from 40° to 85°. Data processing by use of the dielectric-function theory yields optical constants as accurate as by IR spectroscopy: resonance frequency ωTO=393±2 cm−1; damping γ=35±2 cm−1, and Szigeti charge e∗=(0.83±0.07)e.
U2 - 10.1103/PhysRevB.29.4824
DO - 10.1103/PhysRevB.29.4824
M3 - Article
SN - 0163-1829
VL - 29
SP - 4824
EP - 4826
JO - Physical review. B, Condensed matter
JF - Physical review. B, Condensed matter
ER -