Probing the Electron-Phonon Interaction in Potassium by Far-Infrared Cyclotron Resonance

1973 ◽  
Vol 7 (12) ◽  
pp. 5121-5140 ◽  
Author(s):  
S. J. Allen ◽  
L. W. Rupp ◽  
P. H. Schmidt
Keyword(s):  
Cyclotron Resonance ◽  
Far Infrared ◽  
Phonon Interaction ◽  
Electron Phonon Interaction

CALCULATION OF MAGNETODONOR STATES IN InP AND POLARON EFFECTS

2009 ◽  
Vol 23 (12n13) ◽  
pp. 3014-3018 ◽  
Author(s):  
ALEXYS BRUNO-ALFONSO ◽  
GUO-QIANG HAI
Keyword(s):  
Magnetic Fields ◽  
Excited States ◽  
Far Infrared ◽  
Shallow Donor ◽  
Good Qualitative Agreement ◽  
Phonon Interaction ◽  
Transition Energies ◽  
Electron Phonon Interaction ◽  
Multi Level ◽  
Main Effects

Far-infrared transitions in polar semiconductors are known to be affected by the presence of shallow donor impurities, external magnetic fields and the electron-LO-phonon interaction. We calculate the magnetodonor states in indium phosphide by a diagonalization procedure, and introduce the electron-phonon interaction by the Fröhlich term. The main effects of this perturbation are calculated by a multi-level version of the Wigner-Brillouin theory. We determine the transition energies, from the ground state to excited states, and find good qualitative agreement with recently reported absorption-spectroscopy measurements in the 100-800 cm-1 range, with applied magnetic fields up to 30 T. Our calculations suggest that experimental peak splittings in the 400-450 cm-1 range are due to the electron-phonon interaction.

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