Nodal quasiparticle lifetimes in cuprate superconductors

Dahm T, Hirschfeld PJ, Scalapino DJ, Zhu L (2005)
Physical Review B 72(21): 214512.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Dahm, ThomasUniBi; Hirschfeld, PJ; Scalapino, DJ; Zhu, L
Abstract / Bemerkung
A new generation of angular-resolved photoemission spectroscopy (ARPES) measurements on the cuprate superconductors offers the promise of enhanced momentum and energy resolution. In particular, the energy and temperature dependence of the on-shell nodal (k(x)=k(y)) quasiparticle scattering rate can be studied. In the superconducting state, low-temperature transport measurements suggest that one can describe nodal quasiparticles within the framework of a BCS d-wave model by including forward elastic scattering and spin-fluctuation inelastic scattering. Here, using this model, we calculate the temperature and frequency dependence of the on-shell nodal quasiparticle scattering rate in the superconducting state, which determines the momentum width of the ARPES momentum distribution curves. For a zero-energy quasiparticle at the nodal momentum k(N), both the elastic and inelastic scattering rate show a sudden decrease as the temperature drops below T-c, reflecting the onset of the gap amplitude. At low temperatures the scattering rate decreases as T-3 and approaches a zero-temperature value determined by the elastic impurity scattering. For T > T-c, we find a quasilinear dependence on T. At low reduced temperatures, the elastic scattering rate for the nodal quasiparticles exhibits a quasilinear increase at low energy omega, which arises from elastic scattering processes. The inelastic spin-fluctuation scattering leads to a low-energy omega(3) dependence, which, for omega greater than or similar to 3 Delta(0), crosses over to a quasilinear behavior.
Erscheinungsjahr
2005
Zeitschriftentitel
Physical Review B
Band
72
Ausgabe
21
Art.-Nr.
214512
ISSN
1098-0121
eISSN
1550-235X
Page URI
https://pub.uni-bielefeld.de/record/2330108

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Dahm T, Hirschfeld PJ, Scalapino DJ, Zhu L. Nodal quasiparticle lifetimes in cuprate superconductors. Physical Review B. 2005;72(21): 214512.
Dahm, T., Hirschfeld, P. J., Scalapino, D. J., & Zhu, L. (2005). Nodal quasiparticle lifetimes in cuprate superconductors. Physical Review B, 72(21), 214512. https://doi.org/10.1103/PhysRevB.72.214512
Dahm, T., Hirschfeld, P. J., Scalapino, D. J., and Zhu, L. (2005). Nodal quasiparticle lifetimes in cuprate superconductors. Physical Review B 72:214512.
Dahm, T., et al., 2005. Nodal quasiparticle lifetimes in cuprate superconductors. Physical Review B, 72(21): 214512.
T. Dahm, et al., “Nodal quasiparticle lifetimes in cuprate superconductors”, Physical Review B, vol. 72, 2005, : 214512.
Dahm, T., Hirschfeld, P.J., Scalapino, D.J., Zhu, L.: Nodal quasiparticle lifetimes in cuprate superconductors. Physical Review B. 72, : 214512 (2005).
Dahm, Thomas, Hirschfeld, PJ, Scalapino, DJ, and Zhu, L. “Nodal quasiparticle lifetimes in cuprate superconductors”. Physical Review B 72.21 (2005): 214512.

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