To the top

Page Manager: Webmaster
Last update: 9/11/2012 3:13 PM

Tell a friend about this page
Print version

Terahertz frequency spect… - University of Gothenburg, Sweden Till startsida
To content Read more about how we use cookies on

Terahertz frequency spectrum analysis with a nanoscale antiferromagnetic tunnel junction

Journal article
Authors P. Y. Artemchuk
O. R. Sulymenko
S. Louis
J. Li
Roman Khymyn
E. Bankowski
T. Meitzler
V. S. Tyberkevych
A. N. Slavin
O. V. Prokopenko
Published in Journal of Applied Physics
Volume 127
Issue 6
Pages 9
ISSN 0021-8979
Publication year 2020
Published at Department of Physics (GU)
Pages 9
Language en
Keywords magnetoresistance, temperature, dependence, Physics
Subject categories Physical Sciences


A method to perform spectrum analysis on low power signals between 0.1 and 10 THz is proposed. It utilizes a nanoscale antiferromagnetic tunnel junction (ATJ) that produces an oscillating tunneling anisotropic magnetoresistance, whose frequency is dependent on the magnitude of an evanescent spin current. It is first shown that the ATJ oscillation frequency can be tuned linearly with time. Then, it is shown that the ATJ output is highly dependent on matching conditions that are highly dependent on the dimensions of the dielectric tunneling barrier. Spectrum analysis can be performed by using an appropriately designed ATJ, whose frequency is driven to increase linearly with time, a low pass filter, and a matched filter. This method of THz spectrum analysis, if realized in the experiment, will allow miniaturized electronics to rapidly analyze low power signals with a simple algorithm. It is also found by simulation and analytical theories that for an ATJ with a 0.09 mu m(2) footprint, spectrum analysis can be performed over a 0:25 THz bandwidth in just 25 ns on signals that are at the Johnson-Nyquist thermal noise floor. Published under license by AIP Publishing.

Page Manager: Webmaster|Last update: 9/11/2012

The University of Gothenburg uses cookies to provide you with the best possible user experience. By continuing on this website, you approve of our use of cookies.  What are cookies?