Skip to main content
eScholarship
Open Access Publications from the University of California

Pressure dependence of Tc and charge transfer in YBa2Cu3Ox (6.35 7) single crystals

  • Author(s): Almasan, CC
  • Han, SH
  • Lee, BW
  • Paulius, LM
  • Maple, MB
  • Veal, BW
  • Downey, JW
  • Paulikas, AP
  • Fisk, Z
  • Schirber, JE
  • et al.
Abstract

The superconducting critical temperature Tc of YBa2Cu3Ox single crystals (6.35 7) has been measured resistively as a function of pressure P (0P 20 kbar). The initial rate dTc/dP exhibits three distinct regimes, a narrow plateau near 7 with dTc/dP 0.04 K/kbar, a plateau in the range 6.4 6.8, where dTc/dP 0.43 K/kbar, and a maximum value 0.8 K/kbar at 6.35. An analysis of the Tc(x,P) data using a phenomenological model yields a pronounced peak near x=6.8 in dnh(x)/dP, where nh(x) is the change in the hole density in the CuO2 planes relative to the value corresponding to the fully oxygenated sample. © 1992 The American Physical Society.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View