首页|Spin transport characteristics modulated by the GeBi interlayer in Y3Fe5O12/GeBi/Pt heterostructures

Spin transport characteristics modulated by the GeBi interlayer in Y3Fe5O12/GeBi/Pt heterostructures

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For the past few years,germanium-based semiconductor spintronics has attracted considerable interest due to its po-tential for integration into mainstream semiconductor technology.The main challenges in the development of modern semi-conductor spintronics are the generation,detection,and manipulation of spin currents.Here,the transport characteristics of a spin current generated by spin pumping through a GeBi semiconductor barrier in Y3Fe5O12/GeBi/Pt heterostructures were investigated systematically.The effective spin-mixing conductance and inverse spin Hall voltage to quantitatively describe the spin transport characteristics were extracted.The spin-injection efficiency in the Y3Fe5O12/GeBi/Pt heterostructures is comparable to that of the Y3Fe5O12/Pt bilayer,and the inverse spin Hall voltage exponential decays with the increase in the barrier thickness.Furthermore,the band gap of the GeBi layer was tuned by changing the Bi content.The spin-injection efficiency at the YIG/semiconductor interface and the spin transportation within the semiconductor barrier are related to the band gap of the GeBi layer.Our results may be used as guidelines for the fabrication of efficient spin transmission structures and may lead to further studies on the impacts of different kinds of barrier materials.

spin currentY3Fe5O12/GeBi/Pt heterostructuresspin pumpinginverse spin Hall effect

李明明、张磊、金立川、郭海中

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Key Laboratory of Materials Physics,Ministry of Education,School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450052,China

State Key Laboratory of Electronic Thin Films & Integrated Devices,University of Electronic Science and Technology of China,Chengdu 610054,China

Institute of Quantum Materials and Physics,Henan Academy of Sciences,Zhengzhou 450046,China

National Key Research and Development Program of ChinaChina Postdoctoral Science FoundationNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

2021YFA07187012022M7228881217434712004340

2024

10.1088/1674-1056/ace3aa

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(2)
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