Low temperature ballistic spin transport in the S = 1/2 antiferromagnetic Heisenberg chain compound SrCuO2

H Maeter; A A Zvyagin; H Luetkens; G Pascua; Z Shermadini; R Saint-Martin; A Revcolevschi; C Hess; B Büchner; H-H Klauss

doi:10.1088/0953-8984/25/36/365601

Low temperature ballistic spin transport in the S = 1/2 antiferromagnetic Heisenberg chain compound SrCuO2

J Phys Condens Matter. 2013 Sep 11;25(36):365601. doi: 10.1088/0953-8984/25/36/365601. Epub 2013 Aug 8.

Authors

H Maeter¹, A A Zvyagin, H Luetkens, G Pascua, Z Shermadini, R Saint-Martin, A Revcolevschi, C Hess, B Büchner, H-H Klauss

Affiliation

¹ Institute for Solid State Physics, TU Dresden, D-01069 Dresden, Germany.

PMID: 23924574
DOI: 10.1088/0953-8984/25/36/365601

Abstract

We report zero and longitudinal magnetic field muon spin relaxation (μSR) measurements of the spin S = 1/2 antiferromagnetic Heisenberg chain material SrCuO2. We find that in a weak applied magnetic field B0 the spin-lattice relaxation rate λ follows a power law λ is proportional to B(0)(-n) with n = 0.9(3). This result is temperature independent for 5 K ≤ T ≤ 300 K. Within conformal field theory and using the Müller ansatz we conclude ballistic spin transport in SrCuO2.

Publication types

Research Support, Non-U.S. Gov't