Detecting proximities between nuclei is crucial for atomic‐scale structure determination with nuclear magnetic resonance (NMR) spectroscopy. Different from spin‐1/2 nuclei, the methodology for quadrupolar nuclei is limited for solids due to the complex spin dynamics under simultaneous magic‐angle spinning (MAS) and radio‐frequency irradiation. Herein, the performances of several homonuclear rotary recoupling (HORROR)‐based homonuclear dipolar recoupling sequences are evaluated for27Al (spin‐5/2). It is shown numerically and experimentally on mesoporous alumina that
This content will become publicly available on June 29, 2024
Extending the coherence lifetime of a qubit is central to the implementation and deployment of quantum technologies, particularly in the solid state where various noise sources intrinsic to the material host play a limiting role. This study examines theoretically the coherent spin dynamics of a hetero‐spin system formed by a spin featuring a non‐zero crystal field and in proximity to a paramagnetic center . An analysis of the energy level structure of the dyad shows this system exhibits apair of levels separated by a magnetic‐field‐insensitive energy gap, which can be exploited to create long‐lived zero‐quantum coherences. It is found that these coherences are selectively sensitive to “local”—as opposed to “global”—magnetic field fluctuations, suggesting these spin dyads can serve as a nanoscale gradiometer for precision magnetometry. On the other hand, the distinct response of either spin species to electric or thermal stimuli allows one to implement alternative sensing protocols for magnetic‐noise‐free electrometry and thermometry.
more » « less- Award ID(s):
- 2203904
- NSF-PAR ID:
- 10441900
- Publisher / Repository:
- Wiley Blackwell (John Wiley & Sons)
- Date Published:
- Journal Name:
- Advanced Quantum Technologies
- ISSN:
- 2511-9044
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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