Precise measurements of the ab-plane resistance of YBa2Cu3O7−y single crystals under hydrostatic pressure

✍ Scribed by V.N. Kachinsky; V.N. Kochetkov; I.N. Makarenko; V.N. Narozhnyi; T.G. Uvarova

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 249 KB
• Volume: 247
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(95)00197-2

✦ Synopsis

The temperature dependence of the ab-plane electrical resistance (Rab(T)) of YBa2Cu307_y single crystals has been studied under hydrostatic pressure up to 8 kbar using helium as the pressure transmitting medium. The aln(aRab/aT)/aln V value obtained by us is approximately four times greater than that calculated from the data of S.W. Tozer et al. [Phys. Rev. B 47 (1993) 8089] for the pressure range 3.6-130 kbar. The lattice Gruneisen constant (3') estimated from our data in terms of the Bloch-Gruneisen model is unusually large, 3' = 6.8.