Observation of giant interfacial spin Hall angle in Y_3Fe_5O_(12)/Pt heterostructures

Dai Y.; Xu S. J.; Chen S. W.; Fan X. L.; Yang D. Z.; Xue D. S.; Song D. S.; Zhu J.; Zhou S. M.; Qiu Xuepeng

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Observation of giant interfacial spin Hall angle in Y_3Fe_5O_(12)/Pt heterostructures

机译：Y_3Fe_5O_（12）/ Pt异质结构中巨界面自旋霍尔角的观测

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By self-consistently resolving the disentanglement of the spin Hall angle (SHA) and the spin diffusion length (SDL) through the ratio of Hanle and spin Hall magnetoresistances, the SHA in heavy metals has been for the first time rigorously extracted. For Pt on ferromagnetic insulator Y3Fe5O12, the genuine SHA scales as an exponential function of the Pt layer thickness. The spin Hall effect is proved to be dominated by the Berry-phase-induced intrinsic mechanism. In particular, the giant interfacial SHA of 0.33 is observed and is attributed to the broken-symmetry-induced nonspecular electronic scattering at the Y3Fe5O12/Pt interface. At last, the spin relaxation process is found to be dominated by the Elliott-Yafet and D'yakonov-Perel' mechanisms for thin and thick Pt layers, respectively.

机译：通过通过Hanle和自旋霍尔磁阻的比值自洽地解决自旋霍尔角（SHA）和自旋扩散长度（SDL）的纠缠，重金属中的SHA首次得到了严格的提取。对于铁磁绝缘体Y3Fe5O12上的Pt，真正的SHA随Pt层厚度的指数函数缩放。事实证明，自旋霍尔效应受Berry相诱导的内在机理支配。尤其是，观察到0.33的巨大界面SHA，这归因于Y3Fe5O12 / Pt界面处的对称破坏引起的非镜面电子散射。最后，发现自旋弛豫过程主要由薄和厚Pt层的Elliott-Yafet和D'yakonov-Perel'机理决定。

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《Physical review》 |2019年第6期|64404.1-64404.8|共8页
作者
Dai Y.; Xu S. J.; Chen S. W.; Fan X. L.; Yang D. Z.; Xue D. S.; Song D. S.; Zhu J.; Zhou S. M.; Qiu Xuepeng;
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Tongji Univ Sch Phys Sci & Engn Shanghai Key Lab Special Artificial Microstruct M Shanghai 200092 Peoples R China|Tongji Univ Sch Phys Sci & Engn Pohl Inst Solid State Phys Shanghai 200092 Peoples R China;

Lanzhou Univ Key Lab Magnetism & Magnet Mat Minist Educ Lanzhou 730000 Gansu Peoples R China;

Tsinghua Univ Natl Ctr Electron Microscopy Beijing Sch Mat Sci & Engn Key Lab Adv Mat MOE Beijing 100084 Peoples R China|Tsinghua Univ Sch Mat Sci & Engn State Key Lab New Ceram & Fine Proc Beijing 100084 Peoples R China;

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1. Observation of giant interfacial spin Hall angle in Y3Fe5O12/Pt heterostructures [J] . Dai Y., Xu S. J., Chen S. W., Physical review, B . 2019,第6期

机译：Y3Fe5O12 / Pt异质结构巨型界面旋转霍尔角观察
2. Comparative determination of Y_3Fe_5O_(12)/Pt interfacial spin mixing conductance by spin-Hall magnetoresistance and spin pumping [J] . Hailong Wang, Chunhui Du, P. Chris Hammel, Applied Physics Letters . 2017,第6期

机译：自旋霍尔磁阻和自旋泵浦比较确定Y_3Fe_5O_（12）/ Pt界面自旋混合电导
3. Thickness and power dependence of the spin-pumping effect in Y_3Fe_5O_(12)/Pt heterostructures measured by the inverse spin Hall effect [J] . M. B. Jungfleisch, A. V. Chumak, A. Kehlberger, Physical review . 2015,第13期

机译：通过反自旋霍尔效应测量的Y_3Fe_5O_（12）/ Pt异质结构中自旋泵浦效应的厚度和功率相关性
4. Reliable Estimation of TaB Spin Hall Angle by Incorporating the Interfacial Transparency and Isolating Inverse Spin Hall Effect in ST-FMR Analysis. [C] . A. Tiwari, H. Yoda, Y. Kato, IEEE International Magnetics Conference . 2018

机译：通过在ST-FMR分析中结合界面透明度和隔离逆自旋霍尔效应来可靠地估算TaB自旋霍尔角。
5. Spin-orbit Coupling Effects in LaTiO3/SrTiO3 Heterostructures: From Giant Rashba-type Coupling to near Room-temperature Quantum Spin Hall Effect [D] . Veit, Michael J. 2019

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6. Influence of intermixing at the Ta/CoFeB interface on spin Hall angle in Ta/CoFeB/MgO heterostructures [O] . Monika Cecot, Łukasz Karwacki, Witold Skowroński, -1

机译：Ta / CoFeB / MgO异质结构中Ta / CoFeB界面混合对自旋霍尔角的影响
7. Thickness and power dependence of the spin-pumping effect in Y[subscript 3]Fe[subscript 5]O[subscript 12]Pt heterostructures measured by the inverse spin Hall effect [O] . Jungfleisch, Matthias B., Chumak, A. V., Kehlberger, A., 2015

机译：用反自旋霍尔效应测量Y [下标3] Fe [下标5] O [下标12] pt异质结构中自旋泵效应的厚度和功率依赖性

Observation of giant interfacial spin Hall angle in Y_3Fe_5O_(12)/Pt heterostructures

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