Persistent dynamics in the S = 1/2 quasi-one-dimensional chain compound Rb4Cu(MoO4)3 probed with muon-spin relaxation

Lancaster, T.; Baker, P.J.; Pratt, F.L.; Blundell, S.J.; Hayes, W.; Prabhakaran, D.

doi:10.1103/physrevb.85.184404

Persistent dynamics in the S = 1/2 quasi-one-dimensional chain compound Rb4Cu(MoO4)3 probed with muon-spin relaxation

Lancaster, T.; Baker, P.J.; Pratt, F.L.; Blundell, S.J.; Hayes, W.; Prabhakaran, D.

Authors

Professor Tom Lancaster tom.lancaster@durham.ac.uk
Professor

P.J. Baker

F.L. Pratt

S.J. Blundell

W. Hayes

D. Prabhakaran

Abstract

We report the results of muon-spin relaxation measurements on the low-dimensional antiferromagnet Rb4Cu(MoO4)3. No long-range magnetic order is observed down to 50 mK implying a ratio TN/J < 0.005 (where J is the principal exchange strength along the spin chains) and an effective ratio of interchain to intrachain exchange of |J⊥/J | < 2 × 10−3, making the material an excellent realization of a one-dimensional quantum Heisenberg antiferromagnet. We probe the persistent spin excitations at low temperatures and find that ballistic spin transport dominates the excitations detected below 0.3 K.

Citation

Lancaster, T., Baker, P., Pratt, F., Blundell, S., Hayes, W., & Prabhakaran, D. (2012). Persistent dynamics in the S = 1/2 quasi-one-dimensional chain compound Rb4Cu(MoO4)3 probed with muon-spin relaxation. Physical review B, 85(18), Article 184404. https://doi.org/10.1103/physrevb.85.184404

Journal Article Type	Article
Publication Date	May 1, 2012
Deposit Date	Jul 2, 2013
Publicly Available Date	Feb 5, 2014
Journal	Physical Review B
Print ISSN	1098-0121
Electronic ISSN	1550-235X
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	85
Issue	18
Article Number	184404
DOI	https://doi.org/10.1103/physrevb.85.184404