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Article overview
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Spectrum of a magnetized strong-leg quantum spin ladder | | D. Schmidiger
; P. Bouillot
; T. Guidi
; R. Bewley
; C. Kollath
; T. Giamarchi
; A. Zheludev
; | | Date: |
18 Jun 2013 | | Abstract: | Inelastic neutron scattering is used to measure the spin excitation spectrum
of the Heisenberg $S=1/2$ ladder material (C$_7$H$_10$N)$_2$CuBr$_4$ in its
entirety, both in the gapped spin-liquid and the magnetic field induced
Tomonaga-Luttinger spin liquid regimes. A fundamental change of the spin
dynamics is observed between these two regimes. DMRG calculations
quantitatively reproduce and help understand the observed commensurate and
incommensurate excitations. The results validate long-standing quantum field
theoretical predictions, but also test the limits of that approach. | | Source: | arXiv, 1306.4216 | | Services: | Forum | Review | PDF | Favorites | |
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