We introduce a simple phenomenological form for the self-energy which
allows us to extract important information from angle-resolved photoemission
data on the high-Tc superconductor Bi2Sr2CaCu2O8 for binding energies
of order the spectral gap. First, we find a rapid suppression of
the single particle scattering rate below Tc for all doping levels.
Second, we find that in the overdoped materials the gap Δ at all
k points on the Fermi surface has significant temperature dependence
and vanishes near Tc. In contrast, in the underdoped samples such
behavior is found only at k points close to the diagonal. Near (π,0),
Δ is essentially T independent in the underdoped samples. The filling-in
of the pseudogap with increasing T is described by a broadening proportional
to T-Tc, which is naturally explained by pairing correlations above
Tc.
%0 Journal Article
%1 Norman1998
%A Norman, M. R.
%A Randeria, M.
%A Ding, H.
%A Campuzano, J. C.
%D 1998
%I American Physical Society
%J Phys. Rev. B
%K imported
%N 18
%P R11093--R11096
%R 10.1103/PhysRevB.57.R11093
%T Phenomenology of the low-energy spectral function in high-$Tc$ superconductors
%V 57
%X We introduce a simple phenomenological form for the self-energy which
allows us to extract important information from angle-resolved photoemission
data on the high-Tc superconductor Bi2Sr2CaCu2O8 for binding energies
of order the spectral gap. First, we find a rapid suppression of
the single particle scattering rate below Tc for all doping levels.
Second, we find that in the overdoped materials the gap Δ at all
k points on the Fermi surface has significant temperature dependence
and vanishes near Tc. In contrast, in the underdoped samples such
behavior is found only at k points close to the diagonal. Near (π,0),
Δ is essentially T independent in the underdoped samples. The filling-in
of the pseudogap with increasing T is described by a broadening proportional
to T-Tc, which is naturally explained by pairing correlations above
Tc.
@article{Norman1998,
abstract = {We introduce a simple phenomenological form for the self-energy which
allows us to extract important information from angle-resolved photoemission
data on the high-Tc superconductor Bi2Sr2CaCu2O8 for binding energies
of order the spectral gap. First, we find a rapid suppression of
the single particle scattering rate below Tc for all doping levels.
Second, we find that in the overdoped materials the gap Δ at all
k points on the Fermi surface has significant temperature dependence
and vanishes near Tc. In contrast, in the underdoped samples such
behavior is found only at k points close to the diagonal. Near (π,0),
Δ is essentially T independent in the underdoped samples. The filling-in
of the pseudogap with increasing T is described by a broadening proportional
to T-Tc, which is naturally explained by pairing correlations above
Tc.},
added-at = {2010-11-06T00:14:39.000+0100},
author = {Norman, M. R. and Randeria, M. and Ding, H. and Campuzano, J. C.},
biburl = {https://www.bibsonomy.org/bibtex/2bde269da0387c36c314d796ba763ab87/nplumb},
doi = {10.1103/PhysRevB.57.R11093},
file = {:C\:\\Users\\Nick\\Documents\\Papers\\Norman et al. - Phenomenology of the low-energy spectral function in high-Tc superconductors.pdf:PDF},
interhash = {6eaef6d2edb9caf76b0d2331a890e83f},
intrahash = {bde269da0387c36c314d796ba763ab87},
journal = {Phys. Rev. B},
keywords = {imported},
month = May,
number = 18,
numpages = {3},
owner = {Nick},
pages = {R11093--R11096},
publisher = {American Physical Society},
timestamp = {2010-11-06T00:14:43.000+0100},
title = {Phenomenology of the low-energy spectral function in high-$Tc$ superconductors},
volume = 57,
year = 1998
}