Anisotropic quasiparticle scattering rates in slightly underdoped to optimally doped high-temperature La2-xSrxCuO4 superconductors
2008 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 78, no 20, 205103- p.Article in journal (Refereed) Published
An angle-resolved photoemission study of the scattering rate in the superconducting phase of the high-temperature superconductor La2-xSrxCuO4 with x=0.145 and x=0.17, as a function of binding energy and momentum, is presented. We observe that the scattering rate scales linearly with binding energy up to the high-energy scale E-1 similar to 0.4 eV. The scattering rate is found to be strongly anisotropic, with a minimum along the (0,0)-(pi,pi) direction. A possible connection to a quantum-critical point is discussed.
Place, publisher, year, edition, pages
2008. Vol. 78, no 20, 205103- p.
Other Engineering and Technologies not elsewhere specified
IdentifiersURN: urn:nbn:se:kth:diva-8066DOI: 10.1103/PhysRevB.78.205103ISI: 000261215400016ScopusID: 2-s2.0-56349092270OAI: oai:DiVA.org:kth-8066DiVA: diva2:13287
QC 20100810. Uppdaterad från In press till Published. Tidigare titel: Anisotropic scattering in slightly underdoped to optimally doped La(2-x)Sr(x)CuO(4). 20100810.2007-12-122007-12-122010-08-12Bibliographically approved