Size-induced crossover from itinerant to localized magnetism observed for isolated Fe impurities embedded in different structural polymorphs of silver

S. K. Mohanta; Subhrangsu Sarkar; Pushan Ayyub; S. N. Mishra

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Size-induced crossover from itinerant to localized magnetism observed for isolated Fe impurities embedded in different structural polymorphs of silver

机译：对于嵌入在银的不同结构多晶型物中的孤立Fe杂质，观察到了从流动剂到局部磁性的尺寸诱导交叉

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Measurements of the local susceptibility and spin relaxation rate for isolated Fe atoms implanted in the nanocrystalline hexagonal phase of Ag (4H-Ag) show a large orbital moment, in stark contrast with the spin-dominated itinerant magnetism in conventional face centered cubic Ag. The orbital moment observed for Fe in hexagonal Ag (≈1 μ_B) is the largest among d-block hosts, and resembles f -electron magnetism, suggesting Hund's rule type local moment with strong spin-orbit coupling. Calculations based on density functional theory suggest that the crossover from itinerant to local moment behavior results from localization of Fe-3d states due to size-induced changes in unit cell volume and symmetry.

机译：纳米银（4H-Ag）纳米晶六方相中注入的孤立Fe原子的局部磁化率和自旋弛豫速率的测量显示出较大的轨道矩，与常规面心立方Ag中自旋主导的巡回磁性形成鲜明对比。六角形Ag（≈1μ_B）中Fe的轨道矩在d块主体中最大，类似于f电子磁性，表明洪德的规则型局部矩具有很强的自旋-轨道耦合。基于密度泛函理论的计算表明，从流动剂到局部力矩行为的交叉是由于尺寸诱导的单位晶胞体积和对称性变化引起的Fe-3d态的局部化。

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《Physical review》 |2016年第18期|184431.1-184431.4|共4页
作者
S. K. Mohanta; Subhrangsu Sarkar; Pushan Ayyub; S. N. Mishra;
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Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India;

Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India;

Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India;

Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India;

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1. Size-induced crossover from itinerant to localized magnetism observed for isolated Fe impurities embedded in different structural polymorphs of silver [J] . Mohanta S. K., Sarkar Subhrangsu, Ayyub Pushan, Physical review, B . 2016,第18期

机译：对于嵌入在银的不同结构多晶型物中的孤立Fe杂质，观察到了从流动剂到局部磁性的尺寸诱导交叉
2. Transition from itinerant electron magnetism to localized spin magnetism in Ni_3Al_(1-y)Mn_y alloys [J] . Korolev A.V., Kourov N.I., Nazarova S.Z., Diffusion and Defect Data. Solid State Data, Part B. Solid State Phenomena . 2011,第Null期

机译：Ni_3Al_（1-y）Mn_y合金中从流动电子磁性到局部自旋磁性的转变
3. Coexistence of localized and itinerant magnetism in intercalated iron-selenide (Li,Fe)OHFeSe [J] . Da-Yong Liu, Zhe Sun, Liang-Jian Zou New journal of physics . 2017,第2期

机译：插层硒化亚铁（Li，Fe）OHFeSe中局部和巡回磁性的共存
4. Transition from Itinerant Electron Magnetism to Localized Spin Magnetism in Ni_3Al_(1-y)Mn_y Alloys [C] . A. V. Korolev, N. I. Kourov, S. Z. Nazarova, Euro-Asian symposium on trends in magnetism . 2011

机译：从潮汐电子磁力转换到Ni_3Al_（1-Y）Mn_y合金中的局部旋转磁
5. Disorder-induced localization and itinerant magnetism in the Half-Heusler alloys and dilution studies of the beta-titanium tin and barium boride compounds. [D] . Drymiotis, Fivos. 2002

机译：Half-Heusler合金中的无序诱导的局部化和流动磁性以及对β-钛锡和硼化钡化合物的稀释研究。
6. Localized-itinerant dichotomy and unconventional magnetism in SrRu2O6 [O] . Satoshi Okamoto, Masayuki Ochi, Ryotaro Arita, -1

机译：SrRu2O6中的局部流动二分法和非常规磁性
7. Crossover between local-moment magnetism and itinerant-electron magnetism in the t-J model [O] . Ohkawa, Fusayoshi J. 2005

机译：局部矩磁性和巡回电子之间的交叉 t-J模型中的磁性

Size-induced crossover from itinerant to localized magnetism observed for isolated Fe impurities embedded in different structural polymorphs of silver

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