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research article

Spectrum of a Magnetized Strong-Leg Quantum Spin Ladder

Schmidiger, D.
•
Bouillot, P.
•
Guidi, T.
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2013
Physical Review Letters

Inelastic neutron scattering is used to measure the spin excitation spectrum of the Heisenberg S = 1/2 ladder material (C7H10N)(2)CuBr4 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. Density matrix renormalization group 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.

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Type
research article
DOI
10.1103/PhysRevLett.111.107202
Web of Science ID

WOS:000323898300019

Author(s)
Schmidiger, D.
Bouillot, P.
Guidi, T.
Bewley, R.
Kollath, C.
Giamarchi, T.
Zheludev, A.
Date Issued

2013

Publisher

American Physical Society

Published in
Physical Review Letters
Volume

111

Issue

10

Article Number

107202

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LMH  
Available on Infoscience
October 1, 2013
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/95537
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