Accession Number : AD0006048


Title :   BEHAVIOR OF SLOW ELECTRONS IN POLAR CRYSTALS


Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE LAB FOR INSULATION RESEARCH


Personal Author(s) : Gross, E P


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/006048.pdf


Report Date : Dec 1952


Pagination or Media Count : 44


Abstract : The effective mass of slow electrons in polar crystals is investigated by using the continuum model of Pekar (Zhur. Eksp. i Teort. Fiz. 19:796, 1949) and Frohlich, Pelzer, and Zienau (Phil. Mag. 41:221, 1950). The Hamiltonian is studied in a Fock representation so that effects of several quanta can be assessed. The calculations show that the effective mass is larger than that predicted by the 1 quantum solution, but that the effective mass is still small for weakly polar crystals. For excess electrons in strongly polar crystals many quantum contributions must be included, and the present method is inappropriate. Whether the effective mass is small in this case is uncertain. Holes in polar crystals appear to satisfy the conditions for the validity of the theory to Landau and Pekar (Zhur. Eksp. i Teort. Fiz. 18:419, 1948) which predicts a high effective mass.


Descriptors :   *HAMILTONIAN FUNCTIONS , *CRYSTALS , MASS , ELECTRONS , MODELS , VALIDATION , THEORY


Subject Categories : Electricity and Magnetism
      Crystallography
      Quantum Theory and Relativity


Distribution Statement : APPROVED FOR PUBLIC RELEASE