DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2012 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

TT: Fachverband Tiefe Temperaturen

TT 50: Superconductivity: (General) Theory

TT 50.5: Talk

Friday, March 30, 2012, 10:30–10:45, H 3010

Is the tJ model sufficient to describe magnetic excitations in cuprates? — •Wei Chen1 and Oleg Sushkov21Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany — 2University of New South Wales, Sydney 2052, Australia

We adopt theself-consistent Born approximation to study the renormalization of magnetic excitations in a two-dimensional antiferromagnetic state due to finite hole doping. We found that the incoherent motion of holes strongly influences high energy magnons, which causes a significant reduction of magnon bandwidth at large doping. However, by comparing with recent resonant inelastic x-ray scattering data, we conclude that the strongly correlated holes, as described by the tJ model, are not sufficient to determine the magnetic excitations in underdoped cuprates.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2012 > Berlin