Sensing Spin Systems with a Transmission Electron Microscope
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912266995105792 |
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| author | Jaroš, Antonín Seifner, Michael S. Toyfl, Johann Czasch, Benjamin Bicket, Isobel C. Haslinger, Philipp |
| author_facet | Jaroš, Antonín Seifner, Michael S. Toyfl, Johann Czasch, Benjamin Bicket, Isobel C. Haslinger, Philipp |
| contents | We present a novel method that combines spin resonance spectroscopy with transmission electron microscopy (TEM), enabling localized in-situ detection of microwave (MW)-driven spin excitations. Our approach utilizes continuous wave MW excitation at GHz frequencies, while employing the free-space electron beam as a signal receiver to sense spin precession. Spin state polarization is achieved via the magnetic field of the TEM's polepiece, while a custom-designed microresonator integrated into a TEM sample holder drives spin transitions and modulates the electron beam. This modulation enables phase-locked detection with picosecond temporal resolution, allowing the isolation of spin precession contributions to the electron beam deflection with a sensitivity of $\sim 280$ prad. The presented technique lays foundations for the MW spectroscopic in-situ exploration of spin dynamics at the nanoscale. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_06761 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Sensing Spin Systems with a Transmission Electron Microscope Jaroš, Antonín Seifner, Michael S. Toyfl, Johann Czasch, Benjamin Bicket, Isobel C. Haslinger, Philipp Quantum Physics Materials Science Applied Physics We present a novel method that combines spin resonance spectroscopy with transmission electron microscopy (TEM), enabling localized in-situ detection of microwave (MW)-driven spin excitations. Our approach utilizes continuous wave MW excitation at GHz frequencies, while employing the free-space electron beam as a signal receiver to sense spin precession. Spin state polarization is achieved via the magnetic field of the TEM's polepiece, while a custom-designed microresonator integrated into a TEM sample holder drives spin transitions and modulates the electron beam. This modulation enables phase-locked detection with picosecond temporal resolution, allowing the isolation of spin precession contributions to the electron beam deflection with a sensitivity of $\sim 280$ prad. The presented technique lays foundations for the MW spectroscopic in-situ exploration of spin dynamics at the nanoscale. |
| title | Sensing Spin Systems with a Transmission Electron Microscope |
| topic | Quantum Physics Materials Science Applied Physics |
| url | https://arxiv.org/abs/2503.06761 |