nam 22 uu 4500 dbt_mods_00068326 10.1038/s41524-025-01859-0 doi dbt_mods_00068326 ger DE-601 rda eng 004 sdnb bibliography OAI Cholsuk, Chanaprom Author aut Department of Computer Engineering, TUM School of Computation, Information and Technology Technical University of Munich Munich Germany Munich Center for Quantum Science and Technology (MCQST) Munich Germany Nuclear spin-mediated relaxation mechanisms of the V B − \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${{\rm{V}}}_{{\rm{B}}}^{-}$$\end{document} center in hBN Cholsuk, Chanaprom;Vogl, Tobias;Ivády, Viktor 2025-11-20 10 Seiten text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Zweitveröffentlichung Abstract The negatively charged boron vacancy ( V B − \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${{\rm{V}}}_{{\rm{B}}}^{-}$$\end{document} ) defect in hexagonal boron nitride has recently emerged as a promising spin qubit for sensing due to its high-temperature spin control and versatile integration into van der Waals structures. While extensive experiments have explored their coherence properties, much less is known about the spin relaxation time ( T 1 ) and its control parameter dependence. In this work, we develop a parameter-free spin dynamics model based on the cluster expansion technique to investigate T 1 relaxation mechanisms at low temperature. Our results reveal that the V B − \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${{\rm{V}}}_{{\rm{B}}}^{-}$$\end{document} center constitutes a strongly coupled electron spin-nuclear spin core, which necessitates the inclusion of the coherent dynamics and derived memory effects of the three nearest-neighbor nitrogen nuclear spins. Using this framework, this work closely reproduces the experimentally observed T 1 time at B = 90 G and further predicts the T 1 dependence on external magnetic field in the 0≤ B ≤2000 G interval, when the spin relaxation is predominantly driven by electron-nuclear and nuclear-nuclear flip-flop processes mediated by hyperfine and dipolar interactions. This study establishes a reliable and scalable approach for describing T 1 relaxation in V B − \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${{\rm{V}}}_{{\rm{B}}}^{-}$$\end{document} centers and offers microscopic insights to support future developments in nuclear-spin-based quantum technologies. article Vogl, Tobias Author aut Department of Computer Engineering, TUM School of Computation, Information and Technology Technical University of Munich Munich Germany Munich Center for Quantum Science and Technology (MCQST) Munich Germany Abbe Center of Photonics, Institute of Applied Physics Friedrich Schiller University Jena Jena Germany (DE-588)1283612119 Ivády, Viktor Author aut Department of Physics of Complex Systems Eötvös Loránd University Budapest Hungary MTA-ELTE Lendület “Momentum” NewQubit Research Group Budapest Hungary Friedrich-Schiller-Universität Jena Chemisch-Geowissenschaftliche Fakultät host institution his 11:1:344 Technische Universität Ilmenau, Universitätsbibliothek npj computational materials / published in partnership with the Shanghai Institute of Ceramics of the Chinese Academy of Sciences 2057-3960 dbt_mods_00056641 1, article number 15001 (November 2015)- Article number setzt sich zusammen aus dem Erscheinungsjahr "15", "16" etc. und einer fortlaufenden Artikelnummer, die pro Jahr neu beginnt https://www.db-thueringen.de/receive/dbt_mods_00068326 object in context https://www.db-thueringen.de/servlets/MCRFileNodeServlet/dbt_derivate_00069743/41524_2025_Article_1859.pdf raw object https://www.db-thueringen.de/rsc/thumbnail/dbt_mods_00068326.png preview https://www.db-thueringen.de/receive/dbt_mods_00068326 uri