Effects of field-induced hole-density modulation on normal-state and superconducting transport in YBa2Cu3O7-x

X. X. Xi, C. Doughty, A. Walkenhorst, C. Kwon, Qi Li, T. Venkatesan

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144 Scopus citations

Abstract

The hole-density dependence of the normal-state resistivity and transition temperature Tc of YBa2Cu3O7-x was studied using the electric field effect in ultrathin films of 1 to 8 unit cells thickness. The change in resistivity was found to be equal to the field-induced variation in the areal carrier density, leading to a relation that the conductivity is proportional to the hole density. A similar linear dependence was also found in Tc. However, a saturation occurred in both cases but at different hole densities. The result reveals different effects of hole filling in influencing normal-state and superconducting transport of YBa2Cu3O7-x.

Original languageEnglish (US)
Pages (from-to)1240-1243
Number of pages4
JournalPhysical Review Letters
Volume68
Issue number8
DOIs
StatePublished - Jan 1 1992

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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