TRIUMF

Exp. No.

M1733 — Approved

Title of Experiment

Investigating the magnetic precursor phase for superconductivity in spin-ladder system BaFe2(S,Se)3

Spokesperson(s) for Group

Safety Coordinator(s) for Group

Current Members of Group

Name Institution Status % of research time devoted to experiment
B. Frandsen University of California, Berkeley PDF
M. Wang University of California, Berkeley PDF
R.J. Birgeneau University of California, Berkeley Professor
S.C. Cheung Columbia University Student (PhD)
Z. Guguchia Paul Scherrer Institute Research Scientist
Y.J. Uemura Columbia University Professor
Z. Gong Columbia University Student (PhD)

Abstract

BaFe2S3 is an important new material that becomes superconducting under pressure. Partially replacing S with Se is expected to mimic the effect of pressure, bringing the material closer to superconductivity. We will use muon spin relaxation to determine the effect of Se doping on the magnetic properties of BaFe2S3, in conjunction with ongoing neutron scattering investigations of the same samples.