Scientific article
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English

Field-controlled magnetic order in the quantum spin-ladder system (Hpip)2CuBr4

Publication date2009
Abstract

Neutron diffraction is used to investigate the field-induced, antiferromagnetically ordered state in the two-leg spin-ladder material (Hpip)2CuBr4. This “classical” phase, a consequence of weak interladder coupling, is nevertheless highly unconventional: its properties are influenced strongly by the spin Luttinger-liquid state of the ladder subunits. We determine directly the order parameter (transverse magnetization), the ordering temperature, the spin structure, and the critical exponents around the transition. We introduce a minimal microscopic model for the interladder coupling and calculate the quantum fluctuation corrections to the mean-field interaction.

Classification
  • arxiv : cond-mat.str-el
Research groups
Citation (ISO format)
THIELEMANN, B. et al. Field-controlled magnetic order in the quantum spin-ladder system (Hpip)2CuBr4. In: Physical review. B, Condensed matter and materials physics, 2009, vol. 79, n° 2. doi: 10.1103/PhysRevB.79.020408
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Article (Published version)
accessLevelPublic
Identifiers
Journal ISSN1098-0121
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209downloads

Technical informations

Creation28/04/2014 15:03:00
First validation28/04/2014 15:03:00
Update time14/03/2023 22:09:52
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