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Title: Excitations from a Bose-Einstein Condensate of Magnons in Coupled Spin Ladders

Abstract

The weakly coupled quasi-one-dimensional spin ladder compound CH32HHNH3CuCl3 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 reference to spin-dimer materials. 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.

Authors:
 [1];  [1];  [2];  [3];  [4];  [4];  [4];  [5];  [5];  [6];  [6];  [7]
  1. ORNL
  2. Yokohama City University, Japan
  3. Kagoshima University, Kagoshima JAPAN
  4. CEA, Grenoble, France
  5. National Institute of Standards and Technology (NIST)
  6. Hahn-Meitner Institut, Berlin, Germany
  7. Institut Laue-Langevin (ILL)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
931094
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BOSE-EINSTEIN CONDENSATION; CONDENSATES; CRITICAL FIELD; EXCITATION; MAGNETIC FIELDS; MAGNONS; NEUTRONS; SCATTERING; SPIN

Citation Formats

Garlea, Vasile O, Zheludev, Andrey I, Masuda, T., Manaka, H., Regnault, L.-P., Ressouche, E., Grenier, B., Chung, J.-H., Qiu, Y., Habicht, Klaus, Kiefer, K., and Boehm, Martin. Excitations from a Bose-Einstein Condensate of Magnons in Coupled Spin Ladders. United States: N. p., 2007. Web. doi:10.1103/PhysRevLett.98.167202.
Garlea, Vasile O, Zheludev, Andrey I, Masuda, T., Manaka, H., Regnault, L.-P., Ressouche, E., Grenier, B., Chung, J.-H., Qiu, Y., Habicht, Klaus, Kiefer, K., & Boehm, Martin. Excitations from a Bose-Einstein Condensate of Magnons in Coupled Spin Ladders. United States. doi:10.1103/PhysRevLett.98.167202.
Garlea, Vasile O, Zheludev, Andrey I, Masuda, T., Manaka, H., Regnault, L.-P., Ressouche, E., Grenier, B., Chung, J.-H., Qiu, Y., Habicht, Klaus, Kiefer, K., and Boehm, Martin. Mon . "Excitations from a Bose-Einstein Condensate of Magnons in Coupled Spin Ladders". United States. doi:10.1103/PhysRevLett.98.167202.
@article{osti_931094,
title = {Excitations from a Bose-Einstein Condensate of Magnons in Coupled Spin Ladders},
author = {Garlea, Vasile O and Zheludev, Andrey I and Masuda, T. and Manaka, H. and Regnault, L.-P. and Ressouche, E. and Grenier, B. and Chung, J.-H. and Qiu, Y. and Habicht, Klaus and Kiefer, K. and Boehm, Martin},
abstractNote = {The weakly coupled quasi-one-dimensional spin ladder compound CH32HHNH3CuCl3 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 reference to spin-dimer materials. 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.},
doi = {10.1103/PhysRevLett.98.167202},
journal = {Physical Review Letters},
number = ,
volume = 98,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}
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