Magnetic Resonance Spectroscopy in Solid-State Spin Systems

Das, Pronoy (2021) Magnetic Resonance Spectroscopy in Solid-State Spin Systems. Masters thesis, Indian Institute of Science Education and Research Kolkata.

Text (MS Dissertation of Pronoy Das (16MS048)) 16MS048_Thesis_file.pdf - Submitted Version Restricted to Repository staff only Download (35MB)

Abstract

In this project, the development of a planar resonator with electromagnetic profile of quasi-TEM mode, and a complementary structure with electromagnetic profile of Localised Spoof Surface Plasmon is discussed, and Continuous Wave - Electron Spin Resonance spectroscopy is done using the structures. These waveguide structures work in S-band, with a characteristic impedance of 50 . Using Electron Spin Resonance spectroscopy, the g−factor of DPPH is measured and its consistency with the values reported in literature is checked. Furthermore, we build the optical and electronic setup for magnetometry in Nitrogen-Vacancy Centers in diamonds, and verify the functionality of the optical setup by acquiring the fluorescence spectra of the diamond sample. Lastly, a tapered coplanar waveguide for microwave excitation of Nitrogen-Vacancy centers is designed and fabricated, so that the setup can be further modified for Optically Detected Magnetic Resonance spectroscopy.

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