Luttinger liquid physics in the spin ladder material CuBr4(C5H12N)2

Abstract : We present a 14N nuclear magnetic resonance study of a single crystal of CuBr4(C5H12N)2 consisting of weakly coupled spin-1/2 Heisenberg antiferromagnetic ladders. When placed in a magnetic field, such a ladder is theoretically predicted to exhibit a quantum critical Luttinger liquid (LL) behaviour in the gapless phase, i.e. between the two critical fields. Treating ladders as LLs and interaction between them as a perturbation, we are indeed able to fully account for (i) the spin dynamics accessed by measuring the spin–lattice relaxation rate equation image, and for (ii) the phase transition to a 3D ordered phase occurring below 110 mK due to the weak interladder coupling.
Type de document :
Communication dans un congrès
Frank Steglich, Oliver Stockert, Steffen Wirth. Quantum Criticality and Novel Phases (QCNP 2009), Aug 2009, Dresden, Germany. WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, pp.656, 2010, 〈10.1002/pssb.200983048〉
Liste complète des métadonnées

https://hal-ens-lyon.archives-ouvertes.fr/ensl-00565064
Contributeur : Edmond Orignac <>
Soumis le : jeudi 10 février 2011 - 20:04:47
Dernière modification le : mardi 16 janvier 2018 - 16:22:35

Identifiants

Collections

Citation

M. Klanjšek, H. Mayaffre, C. Berthier, M. Horvatić, B. Chiari, et al.. Luttinger liquid physics in the spin ladder material CuBr4(C5H12N)2. Frank Steglich, Oliver Stockert, Steffen Wirth. Quantum Criticality and Novel Phases (QCNP 2009), Aug 2009, Dresden, Germany. WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, pp.656, 2010, 〈10.1002/pssb.200983048〉. 〈ensl-00565064〉

Partager

Métriques

Consultations de la notice

79