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Review of Scientific Instruments / Volume 79 / Issue 10 / CONDENSED MATTER; MATERIALS

Rev. Sci. Instrum. 79, 103903 (2008); http://dx.doi.org/10.1063/1.2988834 (5 pages)

Magnetic detection of high-resolution electron spin resonance using a microcantilever in the millimeter-wave region up to 240 GHz

E. Ohmichi1, N. Mizuno1, M. Kimata2, and H. Ohta3

1Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
2Graduate School of Science and Technology, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
3Molecular Photoscience Research Center, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan and Venture Business Laboratory, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan

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(Received 24 March 2008; accepted 4 September 2008; published online 9 October 2008)

Highly sensitive magnetic detection of electron spin resonance (ESR) using a microcantilever is presented. By combining a modulation technique with the use of a piezoresistive cantilever, we successfully observed ESR signals of a tiny single crystal (mass<1 μg) of Co Tutton salt, Co(NH4)2(SO4)2⋅6H2O, in the frequency region of 80–240 GHz. The achieved spin sensitivity was ∼ 109 spins/G at 4.5 K, providing promising applications to high-resolution and high-sensitivity terahertz ESR.

© 2008 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. PRINCIPLE
  3. EXPERIMENTAL SETUP
  4. RESULTS AND DISCUSSION
  5. SUMMARY

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KEYWORDS and PACS

Keywords

cantilevers, micromechanical devices, paramagnetic resonance, piezoresistive devices

PACS

  • 07.57.Pt

    Submillimeter wave, microwave and radiowave spectrometers; magnetic resonance spectrometers, auxiliary equipment, and techniques

  • 76.30.-v

    Electron paramagnetic resonance and relaxation

  • 07.10.Cm

    Micromechanical devices and systems

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2988834

PUBLICATION DATA

ISSN

0034-6748 (print)  
1089-7623 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    J. van Tol, L. -C. Brunel, and R. J. Wylde, Rev. Sci. Instrum. 76, 074101 (2005)RSINAK000076000007074101000001.

    E. Ohmichi and T. Osada, Rev. Sci. Instrum. 73, 3022 (2002)RSINAK000073000008003022000001.

    P. A. S. Cruickshank and G. M. Smith, Rev. Sci. Instrum. 78, 015101 (2007)RSINAK000078000001015101000001.


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