Sign of inverse spin Hall voltages generated by ferromagnetic resonance and temperature gradients in yttrium iron garnet platinum bilayers
Sign of inverse spin Hall voltages generated by ferromagnetic resonance and temperature gradients in yttrium iron garnet platinum bilayers
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DOI：
10.1088/0022-3727/48/2/025001
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发表时间：
2014-04
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影响因子：
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通讯作者：
Michael Schreier;G. Bauer;V. Vasyuchka;J. Flipse;K. Uchida;J. Lotze;V. Lauer;A. Chumak;A. Serga;S. Daimon;T. Kikkawa;E. Saitoh;B. V. van Wees;B. Hillebrands;R. Gross;S. Goennenwein
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文献类型：
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作者：
Michael Schreier;G. Bauer;V. Vasyuchka;J. Flipse;K. Uchida;J. Lotze;V. Lauer;A. Chumak;A. Serga;S. Daimon;T. Kikkawa;E. Saitoh;B. V. van Wees;B. Hillebrands;R. Gross;S. Goennenwein
我们进行了协调一致的努力，以确定由自旋电流注入到正常金属中产生的反自旋霍尔效应电压的绝对符号。我们专注于室温下的钇铁石榴石（YIG）-铂双层膜，通过微波和温度梯度产生自旋电流。我们发现不同的样品和测量设置与理论一致的结果。我们建议一个右手定则来定义一个正的自旋霍尔角对应于预期的电压为简单的情况下，散射的自由电子从排斥库仑电荷。
We carried out a concerted effort to determine the absolute sign of the inverse spin Hall effect voltage generated by spin currents injected into a normal metal. We focus on yttrium iron garnet (YIG)∣platinum bilayers at room temperature, generating spin currents by microwaves and temperature gradients. We find consistent results for different samples and measurement setups that agree with theory. We suggest a right-hand-rule to define a positive spin Hall angle corresponding to the voltage expected for the simple case of scattering of free electrons from repulsive Coulomb charges.