Energy dependence of the spin excitation anisotropy in uniaxial-strained BaFe1.9Ni0.1As2
dc.citation.firstpage | 180504(R) | en_US |
dc.citation.issueNumber | 18 | en_US |
dc.citation.journalTitle | Physical Review B | en_US |
dc.citation.volumeNumber | 92 | en_US |
dc.contributor.author | Song, Yu | en_US |
dc.contributor.author | Lu, Xingye | en_US |
dc.contributor.author | Abernathy, D.L. | en_US |
dc.contributor.author | Tam, David W. | en_US |
dc.contributor.author | Niedziela, J.L. | en_US |
dc.contributor.author | Tian, Wei | en_US |
dc.contributor.author | Luo, Huiqian | en_US |
dc.contributor.author | Si, Qimiao | en_US |
dc.contributor.author | Dai, Pengcheng | en_US |
dc.date.accessioned | 2016-01-15T19:47:52Z | |
dc.date.available | 2016-01-15T19:47:52Z | |
dc.date.issued | 2015 | en_US |
dc.description.abstract | We use inelastic neutron scattering to study the temperature and energy dependence of the spin excitation anisotropy in uniaxial-strained electron-doped iron pnictide BaFe1.9Ni0.1As2 near optimal superconductivity (Tc=20K). Our work has been motivated by the observation of in-plane resistivity anisotropy in the paramagnetic tetragonal phase of electron-underdoped iron pnictides under uniaxial pressure, which has been attributed to a spin-driven Ising-nematic state or orbital ordering. Here we show that the spin excitation anisotropy, a signature of the spin-driven Ising-nematic phase, exists for energies below ∼60 meV in uniaxial-strained BaFe1.9Ni0.1As2. Since this energy scale is considerably larger than the energy splitting of the dxz and dyz bands of uniaxial-strained Ba(Fe1−xCox)2As2 near optimal superconductivity, spin Ising-nematic correlations are likely the driving force for the resistivity anisotropy and associated electronic nematic correlations. | en_US |
dc.identifier.citation | Song, Yu, Lu, Xingye, Abernathy, D.L., et al.. "Energy dependence of the spin excitation anisotropy in uniaxial-strained BaFe1.9Ni0.1As2." <i>Physical Review B,</i> 92, no. 18 (2015) American Physical Society: 180504(R). http://dx.doi.org/10.1103/PhysRevB.92.180504. | |
dc.identifier.doi | http://dx.doi.org/10.1103/PhysRevB.92.180504 | en_US |
dc.identifier.uri | https://hdl.handle.net/1911/87852 | |
dc.language.iso | eng | en_US |
dc.publisher | American Physical Society | |
dc.rights | Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. | |
dc.title | Energy dependence of the spin excitation anisotropy in uniaxial-strained BaFe1.9Ni0.1As2 | en_US |
dc.type | Journal article | en_US |
dc.type.dcmi | Text | en_US |
dc.type.publication | publisher version | en_US |
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