ISSN:
1572-9605
Keywords:
Resistivity
;
phonons
;
cuprate superconductors
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract The temperature dependence of the resistivity of the cuprate superconductors arising from phonon scattering is considered within standard Bloch-Gruneisen theory allowing for several different shapes of transport spectral functionsα tr 2 F(ω). In contrast to often made comments that linear resistivity is not characteristic of electron-phonon scattering, it is shown rather that it is more difficult to get muchnonlinearity from this theory except below 50–100 K, and in this low-T regime better solutions to the Boltzmann equation might be required. The reasons for the linear behavior are clarified, and the variations to be expected from possible coupling functions are explored. Possible origins of the nonlinear resistivity seen in YBa2Cu4O8 and recently in YBa2Cu3O7 are suggested, and effects not included specifically in these calculations are discussed. It is also pointed out that phonon contributions to the energy (ε) dependence of quasiparticles, which is a closely related consequence of electron-phonon coupling, will differ significantly from the simpleε 2 Fermi liquid behavior that is commonly assumed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00635855
