Gauge approach to superfluid density in underdoped cuprates
Dipartimento di Fisica e Astronomia “Galileo Galilei”, Università di Padova - Via Marzolo 8, 35131 Padova, Italy and Istituto Nazionale di Fisica Nucleare, Sezione di Padova - Via Marzolo 8, 35131 Padova, Italy
Received: 15 January 2015
Accepted: 21 April 2015
We prove that a gauge approach based on a composite structure of the hole in hole-doped cuprates is able to capture analytically many features of the experimental data on superfluid density in the moderate underdoping to nearly optimal doping region, including critical exponent, the Uemura relation and near-universality of the normalized superfluid density.
PACS: 74.72.Gh – Hole-doped / 71.10.Hf – Non-Fermi-liquid ground states, electron phase diagrams and phase transitions in model systems / 11.15.-q – Gauge field theories
© EPLA, 2015