Publication result detail

Rapid scan ESR: A versatile tool for the spin relaxation studies at (sub)THz frequencies

LAGUTA, O.; SOJKA, A.; MARKO, A.; NEUGEBAUER, P.

Original Title

Rapid scan ESR: A versatile tool for the spin relaxation studies at (sub)THz frequencies

English Title

Rapid scan ESR: A versatile tool for the spin relaxation studies at (sub)THz frequencies

Type

WoS Article

Original Abstract

The development of pulse electron spin resonance (ESR) spectroscopy at microwave frequencies above 100 GHz is rather challenging and expensive due to the low output power of modern high-frequency solid state electronics. However, there is a number of scientific problems that require spin relaxation measurements at THz frequencies. The rapid scan ESR is an alternative technique that does not require high microwave power and still provides information on the spin relaxation times. The method takes advantage of fast sweeps of the excitation microwave frequency over the ESR line. When the frequency sweep reaches a sufficiently high rate, distinct oscillations (also called wiggles) appear in the ESR spectrum. These oscillations bear information about T-2 electron spin relaxation time, which can be extracted via fitting the rapid scan spectrum using the modified Bloch equations. In this Perspective Letter, we introduce the recent advances in this technique and discuss the future steps necessary to make the THz rapid scan ESR a convenient and easy to use tool. (c) 2022 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) licence (http://creativecommons.org/licenses/by/4.0/).

English abstract

The development of pulse electron spin resonance (ESR) spectroscopy at microwave frequencies above 100 GHz is rather challenging and expensive due to the low output power of modern high-frequency solid state electronics. However, there is a number of scientific problems that require spin relaxation measurements at THz frequencies. The rapid scan ESR is an alternative technique that does not require high microwave power and still provides information on the spin relaxation times. The method takes advantage of fast sweeps of the excitation microwave frequency over the ESR line. When the frequency sweep reaches a sufficiently high rate, distinct oscillations (also called wiggles) appear in the ESR spectrum. These oscillations bear information about T-2 electron spin relaxation time, which can be extracted via fitting the rapid scan spectrum using the modified Bloch equations. In this Perspective Letter, we introduce the recent advances in this technique and discuss the future steps necessary to make the THz rapid scan ESR a convenient and easy to use tool. (c) 2022 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) licence (http://creativecommons.org/licenses/by/4.0/).

Keywords

SINGLE-MOLECULE MAGNETS; LITHIUM PHTHALOCYANINE; ELECTRON; EPR; PROBE

Key words in English

SINGLE-MOLECULE MAGNETS; LITHIUM PHTHALOCYANINE; ELECTRON; EPR; PROBE

Authors

LAGUTA, O.; SOJKA, A.; MARKO, A.; NEUGEBAUER, P.

RIV year

2023

Released

21.03.2022

Publisher

AIP Publishing

Location

MELVILLE

ISBN

0003-6951

Periodical

APPLIED PHYSICS LETTERS

Volume

120

Number

12

State

United States of America

Pages from

1

Pages to

7

Pages count

7

URL

https://aip.scitation.org/doi/10.1063/5.0083010

Full text in the Digital Library

http://hdl.handle.net/11012/209152

BibTex

@article{BUT178579,
  author="Oleksii {Laguta} and Antonín {Sojka} and Andriy {Marko} and Petr {Neugebauer}",
  title="Rapid scan ESR: A versatile tool for the spin relaxation studies at (sub)THz frequencies",
  journal="APPLIED PHYSICS LETTERS",
  year="2022",
  volume="120",
  number="12",
  pages="1--7",
  doi="10.1063/5.0083010",
  issn="0003-6951",
  url="https://aip.scitation.org/doi/10.1063/5.0083010"
}

Documents

5.0083010