Atypical Raman Scattering on Magnetic Junctions in Metallic Nanowires

被引：0
|
作者：
Krishtop V. [1 ]
Korepanov V. [1 ]
Fomin L. [1 ]
Zagorskiy D. [2 ]
Doludenko I. [2 ]
机构：
[1] Institute of Microelectronic Technology and High Purity Materials, Russian Academy of Sciences, Chernogolovka
[2] FSRC “Crystallography and Photonics”, Russian Academy of Sciences, Moscow
来源：
Russian Microelectronics | 2023年 / 52卷 / Suppl 1期
关键词：
ferromagnetic transitions; nanowire arrays; Raman spectrometry; s-d exchange interaction; THz radiation;
D O I：
10.1134/S1063739723600589
中图分类号：
学科分类号：
摘要：
Abstract: We fabricated arrays of parallel nanowires. Each of the nanowires consists of two different magnetic metals. Using Raman spectrometry, we studied the spectra that appear when a heterojunction between metals is illuminated by a laser and studied the effect of an external magnetic field on the spectra. We also measured the dependence of the intensity of the spectra on the position of the laser spot (in the region of heterojunctions) and on the radiation intensity and we hypothesized the threshold nature of excitation. Near the contact of two metals, the symmetry of the crystal lattice is broken due to amorphization, and a nonzero orbital momentum of the electrons appears. As a result, another radiative transition of electrons become allowed without spin flip, which is sensitive to the magnetic field. © Pleiades Publishing, Ltd. 2023. ISSN 1063-7397, Russian Microelectronics, 2023, Vol. 52, Suppl. 1, pp. S59–S66. Pleiades Publishing, Ltd., 2023.
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页码：S59 / S66
页数：7
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