Please use this identifier to cite or link to this item:
Title: Excited-state optically detected magnetic resonance of spin defects in hexagonal boron nitride
Authors: Mu, Zhao
Cai, Hongbing
Chen, Disheng
Kenny, Jonathan
Jiang, Zhengzhi
Ru, Shihao
Lyu, Xiaodan
Koh, Teck Seng
Liu, Xiaogang
Aharonovich, Igor
Gao, Weibo
Keywords: Science::Physics
Issue Date: 2022
Source: Mu, Z., Cai, H., Chen, D., Kenny, J., Jiang, Z., Ru, S., Lyu, X., Koh, T. S., Liu, X., Aharonovich, I. & Gao, W. (2022). Excited-state optically detected magnetic resonance of spin defects in hexagonal boron nitride. Physical Review Letters, 128(21), 216402-.
Project: NRF2021-QEP2-01- P02 
NRF2021-QEP2-03- P10 
2019-0643 (QEP-P2) 
2019-1321 (QEP-P3) 
MOE2016-T3-1- 006 (S) 
Journal: Physical Review Letters 
Abstract: Negatively charged boron vacancy (V_{B}^{-}) centers in hexagonal boron nitride (h-BN) are promising spin defects in a van der Waals crystal. Understanding the spin properties of the excited state (ES) is critical for realizing dynamic nuclear polarization. Here, we report zero-field splitting in the ES of D_{ES}=2160  MHz and its associated optically detected magnetic resonance (ODMR) contrast of 12% at cryogenic temperature. In contrast to nitrogen vacancy (NV^{-}) centers in diamond, the ODMR contrast of V_{B}^{-} centers is more prominent at cryotemperature than at room temperature. The ES has a g factor similar to the ground state. The ES photodynamics is further elucidated by measuring the level anticrossing of the V_{B}^{-} defects under varying external magnetic fields. Our results provide important information for utilizing the spin defects of h-BN in quantum technology.
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.128.216402
Schools: School of Physical and Mathematical Sciences 
Research Centres: The Photonics Institute 
Centre for Disruptive Photonic Technologies (CDPT) 
Rights: © 2022 American Physical Society. All rights reserved. This paper was published in Physical Review Letters and is made available with permission of American Physical Society.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

Files in This Item:
File Description SizeFormat 
PhysRevLett.128.216402.pdf1.83 MBAdobe PDFThumbnail

Citations 20

Updated on Jul 14, 2024

Web of ScienceTM
Citations 20

Updated on Oct 28, 2023

Page view(s)

Updated on Jul 13, 2024

Download(s) 20

Updated on Jul 13, 2024

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.