Evolution of the quasiparticle spectral function in cuprates

We analyzed photoemission data for several doping levels of the Bi2Sr2CaCu2O8+x compounds, ranging from overdoped to underdoped. We show that the high frequency part of the spectra near (0,pi) can be described by Fermi liquid theory in the overdoped regime, but exhibits a non-Fermi liquid behavior in the underdoped regime. We further demonstrate that this behavior fits reasonably well to a 1/root omega behavior suggested for systems with strong spin fluctuations. [S0163-1829(98)50338-4].


Published in:
Physical Review B, 58, 14, R8905-R8908
Year:
1998
ISSN:
0163-1829
Keywords:
Note:
Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland. Univ Dortmund, D-44221 Dortmund, Germany. USN, Res Lab, Washington, DC 20375 USA. Misra, S, Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA. onellion@comb.physics.wisc.edu
ISI Document Delivery No.: 129WH
Laboratories:




 Record created 2006-10-03, last modified 2018-03-18


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