Dynamic Structure Factor of Disordered Quantum Spin Ladders
نویسندگان
چکیده
منابع مشابه
Weakly disordered spin ladders
We analyze an anisotropic spin 1/2 two legs ladder in the presence of various type of random perturbations. The generic phase diagram for the pure system, in a way similar to spin one chains, consists of four phases: an Antiferromagnet, a Haldane gap or a Singlet phase (depending on the sign of interchain coupling) and two XY phases designated by XY1 and XY2. The effects of disorder depend cruc...
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For w-legged antiferromagnetic spin-1/2 Heisenberg ladders, a long-range spin pairing order can be identified which enables the separation of the space spanned by finite-range (covalent) valence-bond configurations into w + 1 subspaces. Since every subspace has an equivalent counter subspace connected by translational symmetry, twofold degeneracy, breaking translational symmetry is found except...
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C. A. Lamas,1 D. C. Cabra,1,2,3 M. D. Grynberg,1 and G. L. Rossini1 1Departamento de Física, Universidad Nacional de La Plata, C.C. 67, 1900 La Plata, Argentina 2Laboratoire de Physique Théorique, Université Louis Pasteur, 3 Rue de l’Université, 67084 Strasbourg, Cédex, France 3Facultad de Ingeniería, Universidad Nacional de Lomas de Zamora, Cno. de Cintura y Juan XXIII, (1832) Lomas de Zamora,...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2018
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.121.167201