Itinerant spin excitations in SrFe_2As_2 measured by inelastic neutron scattering

R. A. Ewings; T. G. Perring; J. Gillett; S. D. Das; S. E. Sebastian; A. E. Taylor; T. Guidi; A. T. Boothroyd

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Itinerant spin excitations in SrFe_2As_2 measured by inelastic neutron scattering

机译：弹性中子散射测量SrFe_2As_2中的迭代自旋激发

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We report inelastic neutron-scattering measurements of the magnetic excitations in SrFe_2As_2, the parent of a family of iron-based superconductors. The data extend throughout the Brillouin zone and up to energies of ~260 meV. The spectrum calculated from a J_1-J_2 model does not accurately describe our data, and we show that some of the qualitative features that the model fails to describe are readily explained by calculations from a five-band itinerant mean-field model. In particular, the high-energy part of the spectra recorded above T_N do not differ significantly from those at low temperature, which is explained by the itinerant model and which has implications for theories of electronic nematic and orbital ordering.

机译：我们报告了SrFe_2As_2（一个铁基超导体家族的母体）中的磁激发的非弹性中子散射测量。数据延伸到整个布里渊区，能量高达260 meV。从J_1-J_2模型计算出的光谱不能准确地描述我们的数据，并且我们表明，该模型未能描述的一些定性特征可以通过五波段迭代平均场模型的计算轻松解释。特别是，T_N上方记录的光谱的高能部分与低温下的光谱没有显着差异，这由巡回模型解释，并且对电子向列和轨道有序理论有影响。

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来源
《Physical review》 |2011年第21期|p.214519.1-214519.6|共6页
作者
R. A. Ewings; T. G. Perring; J. Gillett; S. D. Das; S. E. Sebastian; A. E. Taylor; T. Guidi; A. T. Boothroyd;
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ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon 0X11 OQX, United Kingdom;

ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon 0X11 OQX, United Kingdom,Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom;

Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 OHE, United Kingdom;

Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 OHE, United Kingdom;

Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 OHE, United Kingdom;

Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford 0X1 3PU, United Kingdom;

ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon 0X11 OQX, United Kingdom;

Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford 0X1 3PU, United Kingdom;

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正文语种 eng
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magnetic properties; spin waves; neutron inelastic scattering;

机译：磁性自旋波中子非弹性散射;

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1. Direct observation of Stoner excitations in itinerant ferromagnets by spin‐polarized inelastic electron scattering (invited; abstract) [J] . Journal of Applied Physics . 1985,第8期

机译：通过自旋极化非弹性电子散射直接观察流动铁磁体中的斯托纳激发（受邀；摘要）
2. Magnetic excitations in the quasi-two-dimensional ferromagnet Fe_(3-x)GeTe_2 measured with inelastic neutron scattering [J] . Calder S., Kolesnikov A. I, May A. F. Physical review. B, Condensed Matter And Materals Physics . 2019,第9期

机译：用非弹性中子散射测量准二维铁磁体Fe_（3-x）GeTe_2中的磁激发
3. Magnetic excitations in the quasi-two-dimensional ferromagnet Fe_(3-x)GeTe_2 measured with inelastic neutron scattering [J] . Calder S., Kolesnikov A. I, May A. F. Physical review. B, Condensed Matter And Materals Physics . 2019,第9期

机译：用非弹性中子散射测量的准二维铁磁FE_（3-X）GetE_2中的磁激发
4. NEUTRON SCATTERING AND μSR STUDIES OF SPIN FLUCTUATIONS IN FRUSTRATED ITINERANT MAGNETS [C] . NATO advanced research workshop on itinerant electron magnetism : Fluctuation effects critical phenomena . 1998

机译：令人沮丧的溜射磁铁中的旋转波动的中子散射和μSR研究
5. A study of the spin structure of the neutron in deep inelastic scattering of polarized electrons on polarized neutrons. [D] . Spengos, Michael Spyro. 1994

机译：极化电子在极化中子上的深度非弹性散射中中子自旋结构的研究。
6. Temperature dependence of nanoscale dynamic processes measured in living millipedes by high resolution inelastic and elastic neutron scattering [O] . Eugene Mamontov, Naresh C. Osti, Madhusudan Tyagi -1

机译：通过高分辨率非弹性和弹性中子散射在活的千足虫中测量的纳米级动力学过程的温度依赖性
7. Itinerant spin excitations in SrFe_{2}As_{2} measured by inelastic neutron scattering [O] . Ewings R, Perring T, Gillett J, 2011

机译：非弹性中子散射测量的SrFe_ {2} As_ {2}中的迭代自旋激发
8. Study of the neutron decays of giant resonances excited by the inelastic scattering of (sup 36) Ar on (sup 90) Zr and (sup 94) Zr targets at 44 MeV/u: a signature of multiphonon states. (Etude des decroissances par neutrons des resonances geantes excitees dans les reactions de diffusion inelastique d'(sup 36)Ar sur des cibles de (sup 90) Zr et (sup 94) Zr a 44MeV/u: une signature des etats multiphonons) [R] . Pascalon-Rozier, V. 1997

机译：通过（sup 36）ar和（sup 90）Zr和（sup 94）Zr靶在44 meV / u的非弹性散射研究巨大共振的中子衰变：多声子态的特征。 des共振激发兴奋丹麦人反应de diffusion inelastique d'（sup 36）ar des des cibles de（sup 90）Zr et（sup 94）Zr a 44 meV / u：une signature des etats multiphonons）

Itinerant spin excitations in SrFe_2As_2 measured by inelastic neutron scattering

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