Strong correlation between Tc and lattice parameters in Ba2YCu3Oy

Ihara, Hideo; Ōyanagi, H.; Sugise, Ryoji; Ohno, Eizo; Matsubara, Toshiya; Ohashi, Shigeru; Terada, Norio; Jo, Masatoshi; Hirabayashi, Masayuki; Murata, Keizo; Negishi, Akira; Kimura, Yoshitaka; Akiba, Etsuo; Hayakawa, Hiroshi; Shin, Shik

doi:10.1016/s0921-4534(88)80169-2

Cited by 15 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They are similar but not identical. Among others, they could not be compared with the same A(P) scale. ii) With the present model and reference [17] an increase of 7c from 50 to 90 K through oxygen concentration variation would correspond (Figs. 2 and 3) to about 15 GPa equivalent pressure, whereas by varying y, a compression of the c-axis of less than 1 % is observed for this 7c variation.…”

Section: Discussionsupporting

confidence: 52%

See 1 more Smart Citation

Pressure dependence of Tc and electron phonon interaction in MBa2Cu3O7 systems

Besson¹

1989

J. Phys. France

View full text Add to dashboard Cite

Existing data for the pressure derivatives of critical temperatures Tc in the MBa2Cu3O7- y family are analyzed (M = Y, or rare earth). Using a two-dimensional BCS model, the electron-phonon coupling parameter is shown to be responsible for the increase of Tc, which varies with y in the same way as under an equivalent internal pressure. The anharmonic barium symmetrical stretching mode is compared with similar phonons in other 1-D or 2-D quasi-low-dimensional structures. A possible mechanism for large electron-phonon interaction and electron-electron pairing is proposed

show abstract

Section: Discussionsupporting

confidence: 52%

“…Their pressure coefficient is high and their c-parameter is larger. The dependence of the c-axis and 7c on O-deficiency is well documented [17] and shows strong correlation in both orthorhombic superconducting phases, above and below y = 0.3. Table I.…”

mentioning

confidence: 74%