论文标题
四脑植物蜂窝状反铁磁铁中的集体激发，na2pro3
Collective excitations in the tetravalent lanthanide honeycomb antiferromagnet, Na2PrO3
论文作者
论文摘要
据报道，NA2PRO3上的热磁性和非弹性中子散射测量值。该材料是基于四型灯笼pr4+的抗铁磁蜂窝磁铁，并已提议托管优势的抗磁性抗铁磁相互作用。这些测量值揭示了在2 MeV的能量以下的Na2Pro3中的磁波动以及约230 MeV的晶体磁场。 The latter energy is comparable to the scale of the spin-orbit interaction and explains both the very small effective moment of around 1.0 μB per Pr4+ and the difficulty to uncover any static magnetic scattering below the ordering transition at TN = 4.6 K. By comparing the low-energy magnetic excitations in Na2PrO3 to that of the isostructural spin-only compound, Na2TbO3, a microscopic model of exchange interactions is developed that含义占主导地位和令人惊讶的大型Heisenberg交流相互作用J大约等于1.1（1）MEV。尽管不能排除抗磁磁性Kitaev与K小于或等于0.2J的相互作用，但是最好用Delta = 1.24（2）Easter-akes xxz xxz交换各向异性来解释Na2pro3的非弹性中子散射数据。
Thermomagnetic and inelastic neutron scattering measurements on Na2PrO3 are reported. This material is an antiferromagnetic honeycomb magnet based on the tetravalent lanthanide Pr4+ and has been proposed to host dominant antiferromagnetic Kitaev interactions. These measurements reveal magnetic fluctuations in Na2PrO3 below an energy of 2 meV as well as crystal-field excitations around 230 meV. The latter energy is comparable to the scale of the spin-orbit interaction and explains both the very small effective moment of around 1.0 μB per Pr4+ and the difficulty to uncover any static magnetic scattering below the ordering transition at TN = 4.6 K. By comparing the low-energy magnetic excitations in Na2PrO3 to that of the isostructural spin-only compound, Na2TbO3, a microscopic model of exchange interactions is developed that implicates dominant and surprisingly large Heisenberg exchange interactions J approximately equal to 1.1(1) meV. Although antiferromagnetic Kitaev interactions with K less than or equal to 0.2J cannot be excluded, the inelastic neutron scattering data of Na2PrO3 is best explained with a delta = 1.24(2) easy-axis XXZ exchange anisotropy.
