JETP Letters -- July 25, 2000 -- Volume 72, Issue 2 pp. 73-76

Anisotropy of Normal Resistivity in Oxygen-Deficient YBa₂Cu₃O_7 - x Single Crystals

V. N. Zverev and D. V. Shovkun

Institute of Solid-State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432 Russia

(Received June 15, 2000)

Temperature dependences of the resistivity tensor components _ab and _c were measured for YBa₂Cu₃O_7 - x single crystals with different oxygen contents. The resistivity anisotropy _c/_ab was found to grow exponentially with decreasing temperature. The results are compared with the predictions of different models describing transverse transport in the normal state of cuprate high-T_c superconductors.

PACS: 74.25.Fy, 74.72.Bk