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On the Theory of the Interband Conductivity for Forbidden Transitions and Indirect Transitions
Author(s) -
Henneberger K.,
Strehlow R.,
Wünsche H.J.
Publication year - 1974
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220610210
Subject(s) - conductivity , condensed matter physics , quantum tunnelling , physics , phonon , coupling constant , quantum mechanics
Following an approach of Enderlein and Peuker Kubo's formula serves to calculate the differential tunneling conductivity in the cases of direct forbidden transitions and indirect (phonon‐assisted) allowed transitions. Whereas the forbidden transitions lead to a conductivity roughly hundred times smaller than for allowed transitions the contribution from the indirect transitions depends on the coupling constant of the electron‐phonon interaction and may have the same order of magnitude as for the direct allowed transitions.