TY - JOUR
T1 - Enhancement of susceptibility and the electrical resistivity of organic metals with a small mean free path
AU - Weger, M.
AU - Entin-Wohlman, O.
AU - Gutfreund, H.
AU - Kaveh, M.
PY - 1984/12
Y1 - 1984/12
N2 - The electronic mean free path of organic metals at ambient temperature is small, approximately one lattice constant.This small mean free path requires a reformulation of transport theory, and also gives rise to new physical effects. The gain susceptibility is enhanced over the Pauli value by approximately a factor of two, and the resistivity continues to follow a T2-law and does not saturate even when the mean free path becomes smaller than a lattice constant. A theory is described which accounts for these unusual effects. The theory is somewhat analogous to polaron theory and makes use of the quadratic nature of the electron-phonon coupling. The electrons are localized by 'phonon traps' accounting for the transition to a Curie-like behavior. Tunneling between these non-degenerate molecular sites gives rise to a T2-law with a coefficient close to that of the low-temperature state where the conductivity is metallic.
AB - The electronic mean free path of organic metals at ambient temperature is small, approximately one lattice constant.This small mean free path requires a reformulation of transport theory, and also gives rise to new physical effects. The gain susceptibility is enhanced over the Pauli value by approximately a factor of two, and the resistivity continues to follow a T2-law and does not saturate even when the mean free path becomes smaller than a lattice constant. A theory is described which accounts for these unusual effects. The theory is somewhat analogous to polaron theory and makes use of the quadratic nature of the electron-phonon coupling. The electrons are localized by 'phonon traps' accounting for the transition to a Curie-like behavior. Tunneling between these non-degenerate molecular sites gives rise to a T2-law with a coefficient close to that of the low-temperature state where the conductivity is metallic.
UR - http://www.scopus.com/inward/record.url?scp=0021617508&partnerID=8YFLogxK
U2 - 10.1016/S0378-4363(84)80063-7
DO - 10.1016/S0378-4363(84)80063-7
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AN - SCOPUS:0021617508
SN - 0378-4363
VL - 127
SP - 395
EP - 400
JO - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
JF - Physica B: Physics of Condensed Matter & C: Atomic, Molecular and Plasma Physics, Optics
IS - 1-3
ER -