Bound States and Field-Polarized Haldane Modes in a Quantum Spin Ladder.

@article{Ward2017BoundSA,
  title={Bound States and Field-Polarized Haldane Modes in a Quantum Spin Ladder.},
  author={Simon Ward and Mattia Mena and Pierre Bouillot and Corinna Kollath and Thierry Giamarchi and Kai Phillip Schmidt and Bruce Normand and Karl W. Kr{\"a}mer and Daniel Biner and R. Bewley and Tatiana Guidi and Martin Boehm and Desmond F McMorrow and Christian R{\"u}egg},
  journal={Physical review letters},
  year={2017},
  volume={118 17},
  pages={
          177202
        }
}
The challenge of one-dimensional systems is to understand their physics beyond the level of known elementary excitations. By high-resolution neutron spectroscopy in a quantum spin-ladder material, we probe the leading multiparticle excitation by characterizing the two-magnon bound state at zero field. By applying high magnetic fields, we create and select the singlet (longitudinal) and triplet (transverse) excitations of the fully spin-polarized ladder, which have not been observed previously… 
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References

SHOWING 1-10 OF 47 REFERENCES

Phys

  • Rev. Lett. 102, 107204
  • 2009

Phys

  • Rev. Lett. 59, 799 (1987); Commun. Math. Phys. 115, 477
  • 1988

Nucl

  • Instrum. Methods Phys. Res., Sect. A 637, 128
  • 2011

Phys

  • Rev. Lett. 101, 137207
  • 2008

Phys

  • Rev. B 41, 1657
  • 1990

Phys

  • Rev. Lett. 87, 167204
  • 2001

Phys

  • Rev. B 58, 3117
  • 1998

Mech

  • P12006
  • 2004

Phys

  • Rev. Lett. 98, 027403
  • 2007