Saturation field of frustrated chain cuprates: broad regions of predominant interchain coupling.

Nishimoto, S; Drechsler, S-L; Kuzian, R O; van den Brink, J; Richter, J; Lorenz, W E A; Skourski, Y; Klingeler, R; Büchner, B

Nishimoto, S; Drechsler, S-L; Kuzian, R O; van den Brink, J; Richter, J; Lorenz, W E A; Skourski, Y; Klingeler, R; Büchner, B.

Afiliación

Nishimoto S; IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany.

Phys Rev Lett ; 107(9): 097201, 2011 Aug 26.

Article en En | MEDLINE | ID: mdl-21929263

RESUMEN

A thermodynamic method to extract the interchain coupling (IC) of spatially anisotropic 2D or 3D spin-1/2 systems from their empirical saturation field H(s) (T=0) is proposed. Using modern theoretical methods we study how H(s) is affected by an antiferromagnetic (AFM) IC between frustrated chains described in the J(1)-J(2)-spin model with ferromagnetic 1st and AFM 2nd neighbor in-chain exchange. A complex 3D-phase diagram has been found. For Li(2)CuO(2) and Ca(2)Y(2)Cu(5)O(10), we show that H(s) is solely determined by the IC and predict H(s)≈61 T for the latter. With H(s)≈55 T from magnetization data one reads out a weak IC for Li(2)CuO(2) close to that obtained from inelastic neutron scattering.

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Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Phys Rev Lett Año: 2011 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Estados Unidos

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