K. Nakao et al., DOUBLE SIGN REVERSAL OF THE HALL-EFFECT IN THE MIXED-STATE OF YBA2CU3OX, Physical review. B, Condensed matter, 57(14), 1998, pp. 8662-8666
The Hall effect in a YBa2Cu3Ox thin film was measured using high curre
nt densities of the order of 10(6) A/cm(2), and the second sign revers
al was observed clearly in the irreversible regime. The shape of the b
oundary between the positive and the negative Hall effect plotted on a
B-T plane is similar to those of Bi-and Tl-based materials reported p
reviously. Feigel'man et al.'s theory reproduces the experimental resu
lts qualitatively.