TY - JOUR
T1 - Inelastic electron dephasing times in CuxGe100-x alloys
AU - Lin, Juhn-Jong
AU - Sheng, P. J.
AU - Hsu, Shih-ying
PY - 2000/5/11
Y1 - 2000/5/11
N2 - We have studied the inelastic electron dephasing scattering times, τi, in disordered CuxGe100-x (35 ≤ x ≤ 60) alloys between 1 and 15 K. The values of τi-1 (approx. Tp), and especially the exponent of temperature p, are extracted from weak localization studies. We find that the value of p continuously decreases from approx. 3 to approx. 1 as x gradually decreases from 60 to 35. Our observation is understood in terms of a crossover of the inelastic electron dephasing in impure metals from e-ph scattering to critical e-e scattering as the disorder greatly increases and the system moves significantly toward the mobility edge.
AB - We have studied the inelastic electron dephasing scattering times, τi, in disordered CuxGe100-x (35 ≤ x ≤ 60) alloys between 1 and 15 K. The values of τi-1 (approx. Tp), and especially the exponent of temperature p, are extracted from weak localization studies. We find that the value of p continuously decreases from approx. 3 to approx. 1 as x gradually decreases from 60 to 35. Our observation is understood in terms of a crossover of the inelastic electron dephasing in impure metals from e-ph scattering to critical e-e scattering as the disorder greatly increases and the system moves significantly toward the mobility edge.
KW - Dephasing times
KW - Disordered metals
KW - Electron-electron relaxation
KW - Electron-phonon relaxation
UR - http://www.scopus.com/inward/record.url?scp=0033878693&partnerID=8YFLogxK
U2 - 10.1016/S0921-4526(99)01836-0
DO - 10.1016/S0921-4526(99)01836-0
M3 - Conference article
AN - SCOPUS:0033878693
SN - 0921-4526
VL - 280
SP - 460
EP - 461
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
IS - 1-4
T2 - 22nd International Conference on Low Temperature Physics (LT-22)
Y2 - 4 August 1999 through 11 August 1999
ER -