We describe a fully broadband approach for electron spin resonance (ESR) experiments, where it is possible to tune not only the magnetic field but also the frequency continuously over wide ranges. Here, a metallic coplanar transmission line acts as compact and versatile microwave probe that can easily be implemented in different cryogenic setups. We perform ESR measurements at frequencies between 0.1 and 67 GHz and at temperatures between 50 mK and room temperature. Three different types of samples (Cr3+ ions in ruby, organic radicals of the nitronyl-nitroxide family, and the doped semiconductor Si:P) represent different possible fields of application for the technique. We demonstrate that an extremely large phase space in temperature, magnetic field, and frequency for ESR measurements, substantially exceeding the range of conventional ESR setups, is accessible with metallic coplanar lines.
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11 May 2015
Research Article|
May 13 2015
Observing electron spin resonance between 0.1 and 67 GHz at temperatures between 50 mK and 300 K using broadband metallic coplanar waveguides
Yvonne Wiemann;
Yvonne Wiemann
11. Physikalisches Institut,
Universität Stuttgart
, Pfaffenwaldring 57, 70569 Stuttgart, Germany
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Julian Simmendinger;
Julian Simmendinger
11. Physikalisches Institut,
Universität Stuttgart
, Pfaffenwaldring 57, 70569 Stuttgart, Germany
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Conrad Clauss;
Conrad Clauss
11. Physikalisches Institut,
Universität Stuttgart
, Pfaffenwaldring 57, 70569 Stuttgart, Germany
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Lapo Bogani;
Lapo Bogani
a)
11. Physikalisches Institut,
Universität Stuttgart
, Pfaffenwaldring 57, 70569 Stuttgart, Germany
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Daniel Bothner;
Daniel Bothner
2Physikalisches Institut and Center for Collective Quantum Phenomena in LISA+,
Universität Tübingen
, Auf der Morgenstelle 14, 72076 Tübingen, Germany
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Dieter Koelle
;
Dieter Koelle
2Physikalisches Institut and Center for Collective Quantum Phenomena in LISA+,
Universität Tübingen
, Auf der Morgenstelle 14, 72076 Tübingen, Germany
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Reinhold Kleiner;
Reinhold Kleiner
2Physikalisches Institut and Center for Collective Quantum Phenomena in LISA+,
Universität Tübingen
, Auf der Morgenstelle 14, 72076 Tübingen, Germany
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Martin Dressel;
Martin Dressel
11. Physikalisches Institut,
Universität Stuttgart
, Pfaffenwaldring 57, 70569 Stuttgart, Germany
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Marc Scheffler
Marc Scheffler
11. Physikalisches Institut,
Universität Stuttgart
, Pfaffenwaldring 57, 70569 Stuttgart, Germany
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a)
Present address: Department of Materials, University of Oxford, 16 Parks Road, Oxford OX1 3PH, United Kingdom.
Appl. Phys. Lett. 106, 193505 (2015)
Article history
Received:
February 19 2015
Accepted:
May 06 2015
Citation
Yvonne Wiemann, Julian Simmendinger, Conrad Clauss, Lapo Bogani, Daniel Bothner, Dieter Koelle, Reinhold Kleiner, Martin Dressel, Marc Scheffler; Observing electron spin resonance between 0.1 and 67 GHz at temperatures between 50 mK and 300 K using broadband metallic coplanar waveguides. Appl. Phys. Lett. 11 May 2015; 106 (19): 193505. https://doi.org/10.1063/1.4921231
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