Publication Date:
2015-10-24
Description:
Author(s): Haoran Man, Xingye Lu, Justin S. Chen, Rui Zhang, Wenliang Zhang, Huiqian Luo, J. Kulda, A. Ivanov, T. Keller, Emilia Morosan, Qimiao Si, and Pengcheng Dai At low temperatures, the study of iron arsenide superconductors is hindered by the appearance of twin domains that strongly affect superconducting and magnetic properties of the system. To detwin the crystal, a uniaxial pressure is usually applied, which may itself affect the magnetic and electronic properties of the system. In this manuscript, a collaboration of authors from USA, China, France, and Germany develop a technique to obtain de-twinned strain-free samples and use transport measurements and neutron scattering to study electronic nematic phase in electron-doped BaFe 2 − x Ni x As 2 . Their results indicate that the in-plane resistivity anisotropy found earlier in uniaxially strained paramagnetic tetragonal phase of iron pnictides is also present in the stress-free samples, but is due to magnetoelastic coupling. [Phys. Rev. B 92, 134521] Published Thu Oct 22, 2015
Keywords:
Superfluidity and superconductivity
Print ISSN:
1098-0121
Electronic ISSN:
1095-3795
Topics:
Physics
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