Thickness related THz-TDS of Fe/Pt heterostructure

HUANG Pan-hui; ZHANG Xiao-lei; LOU Shi-tao

doi:10.3969/j.issn.1000-5641.2017.03.012

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HUANG Pan-hui, ZHANG Xiao-lei, LOU Shi-tao. Thickness related THz-TDS of Fe/Pt heterostructure[J]. Journal of East China Normal University (Natural Sciences), 2017, (3): 107-113. doi: 10.3969/j.issn.1000-5641.2017.03.012

Citation:

HUANG Pan-hui, ZHANG Xiao-lei, LOU Shi-tao. Thickness related THz-TDS of Fe/Pt heterostructure[J]. Journal of East China Normal University (Natural Sciences), 2017, (3): 107-113. doi: 10.3969/j.issn.1000-5641.2017.03.012

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Thickness related THz-TDS of Fe/Pt heterostructure

doi: 10.3969/j.issn.1000-5641.2017.03.012

State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China

Received Date: 2016-04-26
Publish Date: 2017-05-25

Abstract

Abstract

This paper investigates the transmission of terahertz pulse in the ultrathin film with terahertz time-domain spectroscopy and the terahertz pulse produced by the interaction between femtosecond laser pulse and Fe/Pt heterostructure. The thickness of the Fe/Pt film ranges from 2 nm to 8 nm. The terahertz wave exponentially decays in Fe and Pt ultrathin films, but it decays much faster in the bulk Fe and Pt. Due to the limitation in the thickness, electrons have much longer free path in the film plane, which increases the conductivity in the film plane. We also find that the laser pulse with 800 nm wavelength also decays faster in the ultrathin film.
- terahertz technology,
- heterostructure,
- terahertz time-domain spectroscopy,
- magnetic material

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References(21)

References

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