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Gap Modes and Local Density of States of Impurities in RbCl and KBr
Author(s) -
Rath B. K.,
Ram P. N.
Publication year - 1989
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.2221560114
Subject(s) - impurity , resonance (particle physics) , nearest neighbour , mode (computer interface) , chemistry , condensed matter physics , narrow gap , atomic physics , molecular physics , materials science , physics , organic chemistry , artificial intelligence , computer science , mechanics , operating system
A nearest‐neighbour defect model is employed to calculate the local density of states of substitutional impurities K + and Br − in RbCl and Rb + and Cl − in KBr. A detailed investigation of resonance condition is made and possible resonance modes are identified. Contrary to earlier assumption of gap modes in all the systems, resonance modes are identified except in KBr:Rb + in which a gap mode is found.