Studying Paramagnetic Impurities in Diamond with Magnetic Resonance Force Microscopy
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2011
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ndltd-OhioLink-oai-etd.ohiolink.edu-osu13135933402021-08-03T06:03:47Z Studying Paramagnetic Impurities in Diamond with Magnetic Resonance Force Microscopy Herman, Michael Ray Physics Magnetic Resonance Force Microscopy diamond nitrogen centers P1 centers Combining the techniques of magnetic resonance imaging (MRI) with cantilever force microscopy, images with a resolution of a single electron have been demonstrated. This technique has been coined magnetic resonance force microscopy (MRFM). Although a very new technique it has already changed the field of molecular imaging by mapping a single tobacco mosaic virus with less than 10 nm resolution. To further the field of condensed matter physics, MRFM was employed to study impurity centers in diamond to better understand the interactions between electrons and their environment. To achieve this, nitrogen substitution impurities, commonly known as P1 centers, are introduced into diamond samples, enabling the measurement of the fluctuating spin of a single electron at equilibrium. The difficulty of this can only be fully appreciated after observing that the single shot signal to noise ratio is below 0.1. By optimizing both the magnetic probe and the sample, MRFM measurements with a refined signal to noise ratio are obtained. Specifically, ion implantation in diamond creates samples with the desired density of impurities. Employing such samples, characteristics of electron spin diffusion, through spin-spin interactions, are directly observed for the first time. This allows for the measurement of the spin relaxation time and spin diffusion constant. These results are in agreement with previous data from our research group taken in E-prime centers and a theoretical model of spin diffusion. Together these results will allow for better understanding and improved resolution of images taken by MRFM, potentially allowing for single atom imaging of viruses, bacteria and proteins. 2011-09-26 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu1313593340 http://rave.ohiolink.edu/etdc/view?acc_num=osu1313593340 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
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NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Physics Magnetic Resonance Force Microscopy diamond nitrogen centers P1 centers |
| spellingShingle |
Physics Magnetic Resonance Force Microscopy diamond nitrogen centers P1 centers Herman, Michael Ray Studying Paramagnetic Impurities in Diamond with Magnetic Resonance Force Microscopy |
| author |
Herman, Michael Ray |
| author_facet |
Herman, Michael Ray |
| author_sort |
Herman, Michael Ray |
| title |
Studying Paramagnetic Impurities in Diamond with Magnetic Resonance Force Microscopy |
| title_short |
Studying Paramagnetic Impurities in Diamond with Magnetic Resonance Force Microscopy |
| title_full |
Studying Paramagnetic Impurities in Diamond with Magnetic Resonance Force Microscopy |
| title_fullStr |
Studying Paramagnetic Impurities in Diamond with Magnetic Resonance Force Microscopy |
| title_full_unstemmed |
Studying Paramagnetic Impurities in Diamond with Magnetic Resonance Force Microscopy |
| title_sort |
studying paramagnetic impurities in diamond with magnetic resonance force microscopy |
| publisher |
The Ohio State University / OhioLINK |
| publishDate |
2011 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=osu1313593340 |
| work_keys_str_mv |
AT hermanmichaelray studyingparamagneticimpuritiesindiamondwithmagneticresonanceforcemicroscopy |
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1719430199135698944 |