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首页> 外文期刊>Physical review >Frustration-induced one-dimensionality in the isosceles triangular antiferromagnetic lattice of δ-(EDT-TTF-CONMe_2)_2AsF_6
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Frustration-induced one-dimensionality in the isosceles triangular antiferromagnetic lattice of δ-(EDT-TTF-CONMe_2)_2AsF_6

机译：δ-（EDT-TTF-CONMe_2）_2AsF_6的等腰三角形反铁磁晶格中挫折引起的一维

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摘要

The 1/4-filled organic compound, δ-(EDT-TTF-CONMe_2)_2AsF_6 is a frustrated two-dimensional triangular magnetic system as shown by high-frequency (111.2 and 222.4 GHz) electron spin resonance (ESR) and structural data in the literature. The material gradually orders antiferromagnetically below 40 K, but some magnetically disordered domains persist down to 4 K. We propose that in defect free regions frustration prevents true magnetic order down to at least 4 K in spite of the large first- and second-neighbor exchange interactions along chains and between chains, respectively. The antiferromagnetic (AFM) order gradually developing below 40 K nucleates around structural defects that locally cancel frustration. Two antiferromagnetic resonance modes mapped in the principal planes at 4 K are assigned to the very weakly interacting one-dimensional molecular chains in antiferromagnetic regions.
机译：填充了1/4的有机化合物δ-（EDT-TTF-CONMe_2）_2AsF_6是一个受挫的二维三角磁系统，如高频（111.2 GHz和222.4 GHz）电子自旋共振（ESR）和结构数据所示。文献。材料在40 K以下逐渐反铁磁有序，但一些无序磁畴仍保持低至4K。我们建议，在无缺陷区域中，尽管第一和第二邻域的交换很大，但受挫会阻止真正的磁序至少降至4K。沿着链和链之间的相互作用。反铁磁（AFM）顺序在40 K以下逐渐发展，并在局部消除挫折的结构缺陷周围形成核。映射在4 K主平面上的两个反铁磁共振模式被分配给反铁磁区域中非常弱相互作用的一维分子链。

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  • 来源
    《Physical review》 |2016年第17期|174413.1-174413.6|共6页
  • 作者

    B. Nafradi; A. Antal; T. Feher; L. F. Kiss; C. Meziere; P. Batail; L. Forro; A. Janossy;

  • 作者单位

    Institute of Physics, Ecole Polytechnique Federale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland,Department of Physics, Budapest University of Technology and Economics, Budafoki ut 8., H-1111 Budapest, Hungary;

    Institute of Physics, Ecole Polytechnique Federale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland,Department of Physics, Budapest University of Technology and Economics, Budafoki ut 8., H-1111 Budapest, Hungary;

    Department of Physics, Budapest University of Technology and Economics and MTA-BME Condensed Matter Research Group and MTA-BME Lenduelet Magneto-optical Research Group and Spintronics Research Group, Budafoki ut 8., H-1111 Budapest, Hungary;

    Wigner Research Centre for Physics of the Hungarian Academy of Sciences, H-1525 Budapest, Hungary;

    Laboratory MOLTECH-Anjou, LUNAM Universite, University of Angers, CNRS UMR 6200, 49045 Angers, France;

    Laboratory MOLTECH-Anjou, LUNAM Universite, University of Angers, CNRS UMR 6200, 49045 Angers, France;

    Institute of Physics, Ecole Polytechnique Federate de Lausanne (EPFL), CH-1015 Lausanne, Switzerland;

    Department of Physics, Budapest University of Technology and Economics, Budafoki ut 8., H-1111 Budapest, Hungary;

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