We usually think of electrons in solids and liquids as behaving like free particles whose motion is impeded by occasional collisions. Evidence is now accumulating for charge carriers with qualitatively different behavior. These new charge carriers, in the simplest case, are extra electrons in condensed matter that become trapped in potential wells of their own creation, forming units known as small polarons.
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D. Emin, in The Physics of MOS Insulators, G. Lucovsky, S. T. Pantelides, F. L. Galeener, eds., Pergamon, New York (1980). Page 39.
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© 1982 American Institute of Physics.
1982
American Institute of Physics
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