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Nanoscale zero-field electron spin resonance spectroscopy.

ABSTRACT: Electron spin resonance (ESR) spectroscopy has broad applications in physics, chemistry, and biology. As a complementary tool, zero-field ESR (ZF-ESR) spectroscopy has been proposed for decades and shown its own benefits for investigating the electron fine and hyperfine interaction. However, the ZF-ESR method has been rarely used due to the low sensitivity and the requirement of much larger samples than conventional ESR. In this work, we present a method for deploying ZF-ESR spectroscopy at the nanoscale by using a highly sensitive quantum sensor, the nitrogen vacancy center in diamond. We also measure the nanoscale ZF-ESR spectrum of a few P1 centers in diamond, and show that the hyperfine coupling constant can be directly extracted from the spectrum. This method opens the door to practical applications of ZF-ESR spectroscopy, such as investigation of the structure and polarity information in spin-modified organic and biological systems.

SUBMITTER: Kong F

PROVIDER: S-EPMC5908811 | biostudies-other | 2018 Apr

REPOSITORIES: biostudies-other

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Nanoscale zero-field electron spin resonance spectroscopy.

Kong Fei F Zhao Pengju P Ye Xiangyu X Wang Zhecheng Z Qin Zhuoyang Z Yu Pei P Su Jihu J Shi Fazhan F Du Jiangfeng J

Nature communications 20180419 1

Electron spin resonance (ESR) spectroscopy has broad applications in physics, chemistry, and biology. As a complementary tool, zero-field ESR (ZF-ESR) spectroscopy has been proposed for decades and shown its own benefits for investigating the electron fine and hyperfine interaction. However, the ZF-ESR method has been rarely used due to the low sensitivity and the requirement of much larger samples than conventional ESR. In this work, we present a method for deploying ZF-ESR spectroscopy at the ...[more]

PMID: 29674638

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