Entrapment of magnetic micro-crystals for on-chip electron spin resonance studies - Condensed Matter > Mesoscale and Nanoscale PhysicsReport as inadecuate




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Abstract: On-chip Electron Spin Resonance ESR of magnetic molecules requires theability to precisely position nanosized samples in antinodes of theelectro-magnetic field for maximal magnetic interaction. A method is developedto entrap micro-crystals containing spins in a well defined location on asubstrate-s surface. Traditional cavity ESR measurements are then performed ona mesoscopic crystal at 34 GHz. Polycrystalline diluted Cr$^{5+}$ spins wereentrapped as well and measured while approaching the lower limit of the ESRsensitivity. This method suggests the feasibility of on-chip ESR measurementsat dilution refrigerator temperatures by enabling the positioning of samplesatop an on-chip superconducting cavity.



Author: N. Groll, S. Bertaina, M. Pati, N.S. Dalal, I. Chiorescu

Source: https://arxiv.org/







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