Regensburg 2010 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 38: CE: Quantum-Critical Phenomena 2
TT 38.7: Talk
Friday, March 26, 2010, 12:15–12:30, H18
De-Haas van-Alphen oscillations in nonrelativistic U(1) gauge theories — •Lars Fritz1 and Subir Sachdev2 — 1Universitaet zu Koeln, Institut fuer theoretische Physik, Zuelpicher Strasse 77, 50937 Koeln — 2Harvard University, 17 Oxford Street, Cambridge, MA 02138, USA
We investigate magento-oscillations in the specific heat of non-relativistic fermions with a Fermi surface minimally coupled to a fluctuating U(1) gauge field. Our study is motivated by the recent observation of quantum oscillations in the underdoped cuprates, and by theoretical models of pocket Fermi surfaces realizing a non-Fermi liquid *algebraic charge liquid*. Our main result is the computation of the order 1/N correction to the Lifshitz-Kosevich expression for the oscillation amplitude in the dirty limit in a model with N species of fermions.