Magnetic-field effects on the fragile antiferromagnetism in YbBiPt

We present neutron diffraction data for the cubic-heavy-fermion YbBiPt that show broad magnetic diffraction peaks due to the fragile short-range antiferromagnetic (AFM) order persist under an applied magnetic-field \mathbf{H} Our results for \mathbf{H}\perp[\bar{1}~1~0]and a temperature of T=0.14(1)K show that the (\frac{1}{2},\frac{1}{2},\frac{3}{2})magnetic diffraction peak can be described by the same two-peak lineshape found for...