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Strain Methods For Changing Local Electric Field Gradient In Bafe2as2, Caleb Williams
Strain Methods For Changing Local Electric Field Gradient In Bafe2as2, Caleb Williams
Macalester Journal of Physics and Astronomy
In this study, we introduce a novel approach aimed at advancing the investigation of local nematicity in BaFe2As2 via dynamically pulsed strain fields. Our research is motivated by the pursuit of a more sensitive alternative to existing static strain methods. Employing nuclear magnetic resonance techniques, we measure the nuclear quadrupolar energy splittings, utilizing them as a sensitive indicator of the electric field gradient (EFG) that couples strongly to the orbital occupations of the 75As p-orbitals. In the new method, we discern an EFG response through changes in the phase acquired by the nuclear magnetization while time-evolving in the strain field, …