The open archive for STFC research publications

Full Record Details

Persistent URL http://purl.org/net/epubs/work/66191
Record Status Checked
Record Id 66191
Title Magnetic fluctuations and spin freezing in nonsuperconducting LiFeAs derivatives
Abstract We present detailed magnetometry and muon-spin rotation data on polycrystalline samples of overdoped, nonsuperconducting LiFe1−xNixAs (x=0.1,0.2) and Li1−yFe1+yAs (0≤y≤0.04) as well as superconducting LiFeAs. While LiFe1−xNixAs exhibits weak antiferromagnetic fluctuations down to 1.5 K, Li1−yFe1+yAs samples, which have a much smaller deviation from the 1:1:1 stoichiometry, show a crossover from ferromagnetic to antiferromagnetic fluctuations on cooling and a freezing of dynamically fluctuating moments at low temperatures. We do not find any signatures of time-reversal symmetry breaking in stoichiometric LiFeAs that would support recent predictions of triplet pairing.
Organisation ISIS , ISIS-MuSR , STFC
Keywords ISIS 2013
Funding Information
Related Research Object(s):
Licence Information:
Language English (EN)
Type Details URI(s) Local file(s) Year
Journal Article Phys Rev B 88, no. 6 (2013): 060401(R). doi:10.1103/PhysRevB.88.060401 2013