Transport measurements of the spin-wave parameters of thin Mn films

S. Buvaev; S. Ghosh; K. Muttalib; P. Woelfle; A. Hebard

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Transport measurements of the spin-wave parameters of thin Mn films

机译：Mn薄膜自旋波参数的输运测量

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摘要

Temperature-dependent transport measurements on ultrathin antiferromagnetic Mn films reveal a heretofore unknown nonuniversal weak-localization correction to the conductivity which extends to disorder strengths greater than 100 kΩ per square. The inelastic scattering of electrons off of gapped antiferromagnetic spin waves gives rise to an inelastic scattering length which is short enough to place the system in the three-dimensional regime. The extracted fitting parameters provide estimates of the energy gap (Δ ≈ 16 K) and Heisenberg exchange constant (J ≈ 1000 K).

机译：对超薄反铁磁Mn膜的温度依赖性传输测量揭示了迄今为止未知的对电导率的非普遍性弱局部校正，该校正扩展到无序强度大于每平方100kΩ。电子从间隙反铁磁自旋波的非弹性散射产生非弹性散射长度，该长度足够短以使系统处于三维状态。提取的拟合参数提供能隙（Δ≈16 K）和海森堡交换常数（J≈1000 K）的估计值。

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来源
《Physical review》 |2014年第21期|214429.1-214429.5|共5页
作者
S. Buvaev; S. Ghosh; K. Muttalib; P. Woelfle; A. Hebard;
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作者单位

University of Florida, Gainesville, Florida 32611, USA;

University of Florida, Gainesville, Florida 32611, USA;

University of Florida, Gainesville, Florida 32611, USA;

Institute for Theory of Condensed Matter and Institute for Nanotechnology, KIT, 76021 Karlsruhe, Germany;

University of Florida, Gainesville, Florida 32611, USA;

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正文语种 eng
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spin waves; localization effects (anderson or weak localization); macroscopic quantum phenomena in magnetic systems; antiferromagnetics;

机译：自旋波本地化影响（安德森或弱本地化）;磁性系统中的宏观量子现象;反铁磁;

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7. Transport measurements of the spin wave gap of thin Mn films [O] . Buvaev, S., Ghosh, S., Muttalib, K., 2014

机译：薄mn膜自旋波隙的传输测量

Transport measurements of the spin-wave parameters of thin Mn films

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