Physics – Condensed Matter
Scientific paper
Oct 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrvb..40.7866w&link_type=abstract
Physical Review B (Condensed Matter), Volume 40, Issue 11, October 15, 1989, pp.7866-7873
Physics
Condensed Matter
9
Scientific paper
Taking into account the interaction of an electron with both bulk longitudinal-optical (LO) and interface-optical (IO) phonons, we study the magnetic field and temperature dependence of the properties of a magnetopolaron at the interface of polar-polar crystals in an arbitrary magnetic field by using the generalized Larsen perturbation-theory method. The results show that as the temperature increases, the self-trapping of interface magnetopolarons weakens in a weak magnetic field (ωc<ωLO,ωIO), while it strengthens in a strong magnetic field (ωc>ωLO,ωIO). The effect of temperature becomes obvious when ωc is close to ωLO,ωIO. The results also show that the farther the electron is from the interface, the more obvious the electron-bulk-LO-phonon interaction changes with the changing of temperature. On the other hand, the nearer the electron from the interface, the more obvious the electron-IO-phonon interaction changes with changing temperature.
Gu Shi-Wei
Wei Bao-Hua
Zhao Gou-Zhong
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