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Revival of the spin-Peierls transition in Cu_xZn_(1-x)GeO_3 under pressure | | M. Fischer
; P.H.M. van Loosdrecht
; P. Lemmens
; G. Güntherodt
; B. Büchner
; T. Lorenz
; M. Breuer
; J. Zeman
; G. Martinez
; G. Dhalenne
; A. Revcolevschi
; | | Date: |
12 Dec 1997 | | Journal: | Phys. Rev. B57, p.7749-7754 (1998) | | Subject: | Strongly Correlated Electrons | cond-mat.str-el | | Affiliation: | RWTH-Aachen), B. Büchner, T. Lorenz, M. Breuer (Univ. zu Köln), J. Zeman, G. Martinez (GHMFL, Grenoble), G. Dhalenne, A. Revcolevschi (Univ. Paris-Sud | | Abstract: | Pressure and temperature dependent susceptibility and Raman scattering experiments on single crystalline Cu_xZn_(1-x)GeO_3 have shown an unusually strong increase of the spin-Peierls phase transition temperature upon applying hydrostatic pressure. The large positive pressure coefficient (7.5 K/GPa) - almost twice as large as for the pure compound (4.5 K/GPa) - is interpreted as arising due to an increasing magnetic frustration which decreases the spin-spin correlation length, and thereby weakens the influence of the non-magnetic Zn-substitution. | | Source: | arXiv, cond-mat/9712136 | | Services: | Forum | Review | PDF | Favorites | |
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