Detection of femtosecond spin voltage pulses in a thin iron film

被引：10
|
作者：
Buhlmann, K. [1 ]
Saerens, G. [1 ]
Vaterlaus, A. [1 ]
Acremann, Y. [1 ]
机构：
[1] Swiss Fed Inst Technol, Lab Solid State Phys, CH-8093 Zurich, Switzerland
来源：
STRUCTURAL DYNAMICS-US | 2020年 / 7卷 / 06期
关键词：
MAGNETORESISTANCE; TEMPERATURE; PHOTOEMISSION;
D O I：
10.1063/4.0000037
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We present experimental evidence of a spin voltage-a difference between the chemical potentials of the two spin directions-in a thin iron film based on spin- and time-resolved photoemission spectroscopy. This voltage is the driving force for a spin current during the ultrafast demagnetization of the sample. The observed magnitude is on the order of 50 mV, a value that is quite consistent with predictions based on particle conservation and persists for approximately 100 fs.
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页数：5
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