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Antiferromagnetic and superconducting proximity effects in YBa2Cu3O7-delta/PrBa2Cu3O7-delta superlattices

Joakim Holmlund (Institutionen för teknisk fysik, Kondenserade materiens fysik) ; Jakob Andreasson (Institutionen för teknisk fysik, Kondenserade materiens fysik) ; Lars Börjesson (Institutionen för teknisk fysik, Kondenserade materiens fysik)
Physical Review B Vol. 67 (2003), p. 140507.
[Artikel, refereegranskad vetenskaplig]

We investigate the interplay between the antiferromagnetic and superconducting order parameters in YBCO/PBCO superlattices by inelastic light scattering. The ratio of superconducting to antiferromagnetic order is varied through different modulations 4/6, 4/9 and 4/12 of (Y/P)BCO layers. This allows us to identify the proximity effect of the superconducting order parameter into the antiferromagnetic barrier as signified, e.g., by the sharpening of the two-magnon excitation. This proximity effect as well as gap feature and phonon anomalies reveals the delicate interplay between superconducting and antiferromagnetic order parameters.

Nyckelord: superconductivity antiferromagnetism

Denna post skapades 2007-10-17.
CPL Pubid: 54771


Institutioner (Chalmers)

Institutionen för teknisk fysik, Kondenserade materiens fysik (1900-2015)



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