Field-effect conductance ofLa2CuO4

Abstract

Field-effect mobility and conductance of ${\mathrm{La}}_2$ ${\mathrm{CuO}}_4$ single crystals as functions of temperature are presented. An analysis of the observed high field-effect mobility of ${\mathrm{La}}_2$ ${\mathrm{CuO}}_4$ (∼2 ${\mathrm{cm}}^2$/V s) indicates that the density of localized states near the surface is much smaller than in films of ${\mathrm{YBa}}_2$ ${\mathrm{Cu}}_3$ ${\mathrm{O}}_{6+\mathrm{\delta }}$ studied previously.