Spin-density-wave ordering in Ca_(0.5)Sr_(1.5)RuO_4 studied by neutron scattering

S. Kunkemoeller; A. A. Nugroho; Y. Sidis; M. Braden

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Spin-density-wave ordering in Ca_(0.5)Sr_(1.5)RuO_4 studied by neutron scattering

机译：中子散射研究Ca_（0.5）Sr_（1.5）RuO_4中的自旋密度波排序

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The spin-density-wave ordering in Ca_(0.5)Sr_(1.5)RuO_4 was studied by polarized and unpolarized neutron diffraction experiments. Below about 20 K Ca_(0.5)Sr_(1.5)RuO_4 exhibits quasistatic correlations at exactly the incommensurate wave vector at which pure Sr_2RuO_4 shows strong inelastic fluctuations driven by Fermi-surface nesting. The magnetic character of the signal and the orientation of the ordered moments along the c direction can be ascertained by neutron polarization analysis. The magnetic ordering at low temperature is very similar to that found upon minor Ti substitution of Sr_2RuO_4, underlining that this incommensurate spin density wave is the dominant magnetic instability of the unconventional superconductor Sr_2RuO_4.

机译：通过极化和非极化中子衍射实验研究了Ca_（0.5）Sr_（1.5）RuO_4中的自旋密度波排序。低于约20 K时，Ca_（0.5）Sr_（1.5）RuO_4恰好在准波矢量上表现出准相关性，在纯矢量Sr_2RuO_4处，费米表面嵌套驱动了强烈的非弹性波动。信号的磁特性和沿c方向的有序矩的方向可以通过中子极化分析来确定。低温下的磁有序与在Sr_2RuO_4的少量Ti替代下发现的磁有序非常相似，这突显了这种不相称的自旋密度波是非常规超导体Sr_2RuO_4的主要磁不稳定。

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来源
《Physical review》 |2014年第4期|045119.1-045119.6|共6页
作者
S. Kunkemoeller; A. A. Nugroho; Y. Sidis; M. Braden;
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作者单位

Ⅱ. Physikalisches Institut, Universitaet zu Koeln, Zuelpicher Strasse 77, D-50937 Koeln, Germany;

Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesha 10, 40132 Bandung, Indonesia;

Laboratoire Leon Brillouin, CEA/CNRS, F-91191 Gif-sur-Yvette Cedex, France;

Ⅱ. Physikalisches Institut, Universitaet zu Koeln, Zuelpicher Strasse 77, D-50937 Koeln, Germany;

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正文语种 eng
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关键词
ruthenates; dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.); neutron inelastic scattering;

机译：钌酸动态特性（动态磁化率;自旋波;自旋扩散;动态缩放等）;中子非弹性散射;

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1. Procedure for LEED I-V structural analysis of metal oxide surfaces: Ca_(1.5)Sr_(0.5)RuO_4(001) [J] . V. B. Nascimento, R. G. Moore, J. Rundgren, Physical review . 2007,第3期

机译：金属氧化物表面的LEED I-V结构分析程序：Ca_（1.5）Sr_（0.5）RuO_4（001）
2. Procedure for LEED Ⅰ-Ⅴ structural analysis of metal oxide surfaces: Ca_(1.5)Sr_(0.5)RuO_4(001) [J] . V. B. Nascimento, R. G. Moore, J. Rundgren, Physical review. B, Condensed Matter And Materials Physics . 2007,第3期

机译：金属氧化物表面LEEDⅠ-Ⅴ结构分析的程序：Ca_（1.5）Sr_（0.5）RuO_4（001）
3. Fermi Surface Topology of Ca_(1.5)Sr_(0.5)RuO_4 Determined by Angle-Resolved Photoelectron Spectroscopy [J] . S.-C. Wang, H.-B. Yang, A. K. P. Sekharan, Physical review letters . 2004,第17期

机译：角分辨光电子能谱法测定Ca_（1.5）Sr_（0.5）RuO_4的费米表面拓扑
4. Magnetisation, magnetic susceptibility and microwave surface impedance of (Y_(0.74)Ca_(0.16)Sr_(0.1)Sr_(1.5)Ba_(0.5)Cu_(2.74)(SO_4)_(0.15)O_7 [C] . M Slaski, C E Gough, A P Kharel, European conference on applied superconductivity . 1995

机译：磁化，磁化率和微波表面阻抗（Y_（0.74）CA_（0.16）SR_（0.1）SR_（1.5）BA_（0.5）CU_（2.74）（SO_4）_（0.15）O_7
5. Temperature Dependence of Phonons in Elemental Cubic Metals Studied by Inelastic Scattering of Neutrons and X-Rays. [D] . Kresch, Max G. 2009

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7. Structural aspects of metamagnetism in Ca_{2-x}Sr_{x}RuO_4 (0.2 < x < 0.5): field tuning of orbital occupation [O] . Kriener, M, Steffens, P, Baier, J, 2004

机译：Ca_ {2-x} Sr_ {x} RuO_4（0.2

Spin-density-wave ordering in Ca_(0.5)Sr_(1.5)RuO_4 studied by neutron scattering

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