Hole Localization in Underdoped Superconducting Cuprates Near 1/8th Doping

Abstract

Measurements of thermal conductivity versus temperature over a broad range of doping in YBa${}_2$Cu${}_3$O${}_{6+x}$ and HgBa${}_2$Ca${}_{n-1}$Cu${}_n$O${}_{2n+2+\delta }$ ($n$=1,2,3) suggest that small domains of localized holes develop for hole concentrations near $p$=1/8. The data imply a mechanism for localization that is intrinsic to the CuO${}_2$-planes and is enhanced via pinning associated with oxygen-vacancy clusters.

4 pages, 4 eps fig.'s, to be published, Phys. Rev. B

References in corpus (2)

• Charge stripes and spin correlations in copper-oxide superconductors
• Modulated spin and charge densities in cuprate superconductors

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