Excitations from a Bose-Einstein condensate of magnons in coupled spin ladders

Abstract

The weakly coupled quasi-one-dimensional spin ladder compound (CH${}_3$)${}_2$CHNH${}_3$CuCl${}_3$ is studied by neutron scattering in magnetic fields exceeding the critical field of Bose-Einstein condensation of magnons. Commensurate long-range order and the associated Goldstone mode are detected and found to be similar to those in a reference 3D quantum magnet. However, for the upper two massive magnon branches the observed behavior is totally different, culminating in a drastic collapse of excitation bandwidth beyond the transition point.

4 pages, 4 figures

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Cited by in corpus (39)

• Bose-Einstein Condensation in Magnetic Insulators
• Spontaneous Magnon Decays
• Direct Observation of Magnon Fractionalization in the Quantum Spin Ladder
• Field-induced Tomonaga-Luttinger liquid phase of a two-leg spin-1/2 ladder with strong leg interactions
• Evidence of a magnetic Bose glass in IPA-Cu(Cl0.95Br0.05)3 from neutron diffraction
• Spectral and thermodynamic properties of a strong-leg quantum spin ladder
• A direct measurement of the Bose-Einstein Condensation universality class in NiCl${}_2$-4SC(NH${}_2$)${}_2$ at ultra-low temperatures
• Phase diagram of hard-core bosons on clean and disordered 2-leg ladders: Mott insulator - Luttinger liquid - Bose glass
• Dirty-boson physics with magnetic insulators
• Diverging thermal expansion of the spin-ladder system (C${}_5$H${}_{12}$N)${}_2$CuBr${}_4$
• Low-Temperature Heat Transport in the Low-Dimensional Quantum Magnet NiCl_{2}-4SC(NH_{2})_{2}
• Neutron scattering evidence for isolated spin-1/2 ladders in (C${}_5$D${}_{12}$N)${}_2$CuBr${}_4$
• Spin-spin correlations of the spin-ladder compound (C${}_5$H${}_{12}$N)${}_2$CuBr${}_4$ measured by magnetostriction and comparison to Quantum Monte Carlo results
• Quantum critical dynamics of a S = 1/2 antiferromagnetic Heisenberg chain studied by 13C-NMR spectroscopy
• Frustration-induced quantum phase transitions in a quasi-one-dimensional ferrimagnet: Hard-core boson map and the Ton ks-Girardeau limit
• Incommensurate dynamic correlations in the quasi-two-dimensional spin liquid BiCu2PO6
• Dimensional crossover in a spin liquid to helimagnet quantum phase transition
• Spin-Dynamics of the antiferromagnetic S=1/2-Chain at finite magnetic Fields and intermediate Temperatures
• Effect of pressure on the quantum spin ladder material IPA-CuCl3
• Low Temperature Dynamics of Magnons in a Spin-1/2 Ladder Compound
• Crystals for neutron scattering studies of quantum magnetism
• Magnetic ordering induced by interladder coupling in the spin-1/2 Heisenberg two-leg ladder antiferromagnet C${}_9$H${}_{18}$N${}_2$CuBr${}_4$
• Microscopic model for Bose-Einstein condensation and quasiparticle decay
• Field-induced double dome and Bose-Einstein condensation in the crossing quantum spin chain system AgVOAsO4
• Neutron scattering study of a quasi-2D spin-1/2 dimer system Piperazinium Hexachlorodicuprate under hydrostatic pressure
• Spin dynamics of coupled spin ladders near quantum criticality in Ba2CuTeO6
• Magnetic-field induced multiferroicity in a quantum critical frustrated spin liquid
• Thermal conductivity of IPA-CuCl_3: Evidences of ballistic magnon transport and limited applicability of the Bose-Einstein condensation model
• Magnons and continua in a magnetized and dimerized spin-1/2 chain
• Dynamics of the two-dimensional S=1/2 dimer system (C5H6N2F)2CuCl4
• Field-induced spin nematic Tomonaga-Luttinger liquid of the $S=1/2$ spin ladder system with the anisotropic ferromagnetic rung interaction
• Excitations from a chiral magnetized state of a frustrated quantum spin liquid
• Low frequency spin dynamics in the quantum magnet copper pyrazine dinitrate
• Structural and magnetic properties in the quantum S=1/2 dimer systems Ba3(Cr1-xVx)2O8 with site disorder
• Static magnetic and ESR spectroscopic properties of the dimer-chain antiferromagnet BiCoPO${}_5$
• Low-temperature heat transport of spin-gapped quantum magnets
• Triplet Dimerization Crossover Driven by Magnetic Frustration in In2VO5
• Field induced non-BEC transitions in frustrated magnets
• Field-induced ordering in a random-bond quantum spin ladder compound with weak anisotropy