S Ishibashi et al 1990 J. Phys.: Condens. Matter 2 3691 doi:10.1088/0953-8984/2/15/025
S Ishibashi, K Suenuga, R Yamamoto, M Doyama and T Matsumoto
Show affiliationsPositron lifetime measurements were performed on YBa2(Cu1-xFex)3O7-y with x=0, 0.01, 0.02, 0.03, 0.06, 0.09 and 0.12 as a function of temperature between 20 K and room temperature. The positron mean lifetime and its thermal behaviour strongly depend on the iron concentration. A plausible model is proposed, in which the observed results are explained in terms of positron weak localisation due to copper-oxygen chain disordering.
78.70.Bj Positron annihilation
74.25.Fy Transport properties (electric and thermal conductivity, thermoelectric effects, etc.)
74.62.Dh Effects of crystal defects, doping and substitution
Issue 15 (16 April 1990)
S Ishibashi et al 1990 J. Phys.: Condens. Matter 2 3691
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