Sr-substitution-dependent mixing of the (Ba,Sr)-Ag and Cu2-Ag phonons in NdBa2−xSrxCu3O7−δ (0 ≤ x≤1.1)

✍ Scribed by G.G. Bogachev; N. Poulakis; V.G. Hadjiev; E. Liarokapis; H. Gamari-Seale; D. Niarchos; M.N. Iliev

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 201 KB
• Volume: 235-240
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(94)91818-x

✦ Synopsis

The variations with x of the frequencies of the two lowest Raman modes of A o(Al~) symmetry in superconducting NdBa2-.Sr.CuaO7_6 (6 ~ 0; 0 < x < 1.1) give evidence for a strong mode mixing, resulting in renormalization of the phone:, frequencies at higher x.