Spin Ice: Magnetic Excitations without Monopole Signatures using Muon Spin Rotation

Details Spin Ice: Magnetic Excitations without Monopole Signatures using Muon Spin Rotation Spin Ice: Magnetic Excitations without Monopole Signatures using Muon Spin Rotation

2011-10-05

arxiv.org/abs/1110.0877v2

Phys Rev. Lett. 107, 207207 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages; 4 figures; published in Phys Rev. Lett. 107, 207207 (2011); Supplementary material and body of paper combined togethe

Scientific paper

10.1103/PhysRevLett.107.207207

Theory predicts the low-temperature magnetic excitations in spin ices consist of deconfined magnetic charges, or monopoles. A recent transverse-field (TF) muon spin rotation (muSR) experiment [S T Bramwell et al, Nature 461, 956 (2009)] reports results claiming to be consistent with the temperature and magnetic field dependence anticipated for monopole nucleation - the so-called second Wien effect. We demonstrate via a new series of muSR experiments in Dy_2Ti_2O_7 that such an effect is not observable in a TF muSR experiment. Rather, as found in many highly frustrated magnetic materials, we observe spin fluctuations which become temperature independent at low temperatures, behavior which dominates over any possible signature of thermally nucleated monopole excitations.

Affiliated with

Also associated with

No associations

Rating

Spin Ice: Magnetic Excitations without Monopole Signatures using Muon Spin Rotation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spin Ice: Magnetic Excitations without Monopole Signatures using Muon Spin Rotation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin Ice: Magnetic Excitations without Monopole Signatures using Muon Spin Rotation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-324516