Efficient Co/Pt THz spintronic emitter with tunable polarization-Reference-Cited by-同舟云学术

Efficient Co/Pt THz spintronic emitter with tunable polarization

Published:2023-08-21 Issue:8 Volume:123 Page:
ISSN:0003-6951
Container-title:Applied Physics Letters
language:en
Short-container-title:

Author:

Buryakov A. M.¹^ORCID,Gorbatova A. V.¹^ORCID,Avdeev P. Y.¹^ORCID,Lebedeva E. D.¹^ORCID,Brekhov K. A.¹^ORCID,Ovchinnikov A. V.²^ORCID,Gusev N. S.³⁴,Karashtin E. A.³⁴^ORCID,Sapozhnikov M. V.³⁴^ORCID,Mishina E. D.¹^ORCID,Tiercelin N.⁵^ORCID,Preobrazhensky V. L.⁶^ORCID

Affiliation:

1. MIREA - Russian Technological University 1 , Moscow 119454, Russia

2. Joint Institute for High Temperatures of the Russian Academy of Sciences 2 , Izhorskaya 13 Bldg. 2, Moscow 125412, Russia

3. Institute for Physics of Microstructures RAS 3 , Nizhny Novgorod 603950, Russia

4. Lobachevsky State University 4 , Nizhny Novgorod 603950, Russia

5. University Lille, CNRS, Centrale Lille, University Polytechnique Hauts-de-France, UMR 8520 -IEMN 5 , 59000 Lille, France

6. Prokhorov General Physics Institute of RAS 6 , Moscow 119991, Russia

Abstract

We report on the design of a spintronic emitter based on the Pt(3 nm)/Co(3 nm) structure, which enables the control over terahertz radiation polarization. Utilizing the field-induced magnetization rotation that takes place at low magnetic fields of up to 250 Oe at room temperature, we have achieved the full range of terahertz polarization rotation from 0° to 360°. This rotation became possible due to the uniaxial magnetic anisotropy induced in the plane of the cobalt film during its fabrication. We evaluated the efficiency of the Co/Pt structure in generating terahertz radiation and found that the terahertz pulse energy flux reaches ∼160 nJ/cm2 at an excitation flux of 4 mJ/cm2.

Funder

Russian Science Foundation

MIREA - Russian Technological University

Ministry of Science and Higher Education of the Russian Federation

Publisher

AIP Publishing

Subject

Physics and Astronomy (miscellaneous)

Link

https://pubs.aip.org/aip/apl/article-pdf/doi/10.1063/5.0160497/18094261/082404_1_5.0160497.pdf

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