Spin Resonance Clock Transition of the Endohedral Fullerene N 15 @ C60

R. T. Harding, S. Zhou, J. Zhou, T. Lindvall, W. K. Myers, A. Ardavan, G. A. D. Briggs, K. Porfyrakis, E. A. Laird

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

The endohedral fullerene N15@C60 has narrow electron paramagnetic resonance lines which have been proposed as the basis for a condensed-matter portable atomic clock. We measure the low-frequency spectrum of this molecule, identifying and characterizing a clock transition at which the frequency becomes insensitive to magnetic field. We infer a linewidth at the clock field of 100 kHz. Using experimental data, we are able to place a bound on the clock's projected frequency stability. We discuss ways to improve the frequency stability to be competitive with existing miniature clocks.

Original languageEnglish
Article number140801
JournalPhysical Review Letters
Volume119
Issue number14
DOIs
Publication statusPublished - 4 Oct 2017
MoE publication typeA1 Journal article-refereed

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spin resonance
clocks
fullerenes
frequency stability
atomic clocks
resonance lines
electron paramagnetic resonance
low frequencies
magnetic fields
molecules

Keywords

  • atomic clock
  • electron spin resonance
  • endohedral fullerene

Cite this

Harding, R. T., Zhou, S., Zhou, J., Lindvall, T., Myers, W. K., Ardavan, A., ... Laird, E. A. (2017). Spin Resonance Clock Transition of the Endohedral Fullerene N 15 @ C60. Physical Review Letters, 119(14), [140801]. https://doi.org/10.1103/PhysRevLett.119.140801
Harding, R. T. ; Zhou, S. ; Zhou, J. ; Lindvall, T. ; Myers, W. K. ; Ardavan, A. ; Briggs, G. A. D. ; Porfyrakis, K. ; Laird, E. A. / Spin Resonance Clock Transition of the Endohedral Fullerene N 15 @ C60. In: Physical Review Letters. 2017 ; Vol. 119, No. 14.
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Harding, RT, Zhou, S, Zhou, J, Lindvall, T, Myers, WK, Ardavan, A, Briggs, GAD, Porfyrakis, K & Laird, EA 2017, 'Spin Resonance Clock Transition of the Endohedral Fullerene N 15 @ C60', Physical Review Letters, vol. 119, no. 14, 140801. https://doi.org/10.1103/PhysRevLett.119.140801

Spin Resonance Clock Transition of the Endohedral Fullerene N 15 @ C60. / Harding, R. T.; Zhou, S.; Zhou, J.; Lindvall, T.; Myers, W. K.; Ardavan, A.; Briggs, G. A. D.; Porfyrakis, K.; Laird, E. A.

In: Physical Review Letters, Vol. 119, No. 14, 140801, 04.10.2017.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Spin Resonance Clock Transition of the Endohedral Fullerene N 15 @ C60

AU - Harding, R. T.

AU - Zhou, S.

AU - Zhou, J.

AU - Lindvall, T.

AU - Myers, W. K.

AU - Ardavan, A.

AU - Briggs, G. A. D.

AU - Porfyrakis, K.

AU - Laird, E. A.

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N2 - The endohedral fullerene N15@C60 has narrow electron paramagnetic resonance lines which have been proposed as the basis for a condensed-matter portable atomic clock. We measure the low-frequency spectrum of this molecule, identifying and characterizing a clock transition at which the frequency becomes insensitive to magnetic field. We infer a linewidth at the clock field of 100 kHz. Using experimental data, we are able to place a bound on the clock's projected frequency stability. We discuss ways to improve the frequency stability to be competitive with existing miniature clocks.

AB - The endohedral fullerene N15@C60 has narrow electron paramagnetic resonance lines which have been proposed as the basis for a condensed-matter portable atomic clock. We measure the low-frequency spectrum of this molecule, identifying and characterizing a clock transition at which the frequency becomes insensitive to magnetic field. We infer a linewidth at the clock field of 100 kHz. Using experimental data, we are able to place a bound on the clock's projected frequency stability. We discuss ways to improve the frequency stability to be competitive with existing miniature clocks.

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KW - electron spin resonance

KW - endohedral fullerene

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