Effect of uniaxial pressure on magnetic order and spin excitations of NaFeAs
An in-plane external uniaxial pressure has been effectively used as a method to acquire single domain iron pnictides, such as BaFe2As2 and NaFeAs, which both exhibit twin-domains without uniaxial strain below their respective tetragonal-to-orthorhombic structural (nematic) transition temperatures Ts. We have recently observed that such a strain on BaFe2As2 also induces a static or quasi-static out-of-plane (c-axis) AF order and its associated critical spin fluctuations near TN /Ts. Given this, and that previous work has shown that spin fluctuations respond to Ts in NaFeAs, we plan to use polarized elastic neutron scattering to study low-energy spin fluctuations in detwinned NaFeAs, which undergoes a magnetic and structural phase transitions at 45K and 58K respectively. In the case of BaFe2As2, these transition temperatures coincide, so we put forward the experiment detailed in our proposal to determine if uniaxial pressure can modify the magnetic structure of NaFeAs, and whether there is also spin fluctuation anisotropy induced by uniaxial pressure similar to the case of BaFe2As2.
The data is currently only available to download if you are a member of the proposal team.
The recommended format for citing this dataset in a research publication is in the following format:
KLEMM Mason; BOUNOUA Dalila; BOURDAROT Frederic; Bourges and Yixi Su. (2021). Effect of uniaxial pressure on magnetic order and spin excitations of NaFeAs. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-54-346
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