I Simposio de Postgrado 2023. Ingeniería, ciencias e innovación

MÓDULO_ 01 Astronomía y Física 28 HIGH-SPIN LUMINESCENT DEFECT IN HEXAGONAL BORON NITRIDE ABSTRACT So far among the most widely accepted point defects associated with the emission of single photons in hexagonal boron nitride (h-BN) are adjacent substitutional C atoms, showing a perfect agreement between theory and experimental data in emission wavelength and phononic replicas by means of density functional theory (DFT) calculations.[1] Nevertheless, these defects which may be non-magnetic, which it occurswhen there is an evennumber of C atoms, or paramagnetic with spin S=½, which it takes place when there is an odd number of C atoms, are too small for practical spintronic applications, like quantum communication, quantum sensing and quantum cryptography. In addition, the searching of defects with spin S≥½ can be useful in this context. In addition, it is important the analysis of the single photon emitters (SPEs), since in this way we can manipulate the well defined spin defect by using its zero phonon line (ZPL) value to produce quantum bits. In this poster, we will review the photoluminescence of carbon defects, and then we will propose a set of high-spin C-based defects in hexagonal boron nitride. Emphasis will be in the basic physics favoring a magnetic ground state in an usually non- magnetic environment (B,C,N). Ignacio Chacon 1 , F. Munoz 1,2 1 Departamento de Física, Facultad de Ciencias, Universidad de Chile. 2 Centro para el desarrollo de la nanociencia y nanotecnología, CEDENNA. *Email: ignacio.chacon@ug.uchile.cl REFERENCES [1] C. Jara et al. J. Phys. Chem A 125 1325 (2021)