Effect of external magnetic and electric fields and strains on diamond with negatively charged nitrogen vacancies

Abstract

Characteristics of magneto-electro-elastic effects in a diamond with negatively charged nitrogen vacancy centers are calculated analytically. It is predicted that strains or the external electric field can cause the onset of projections of the magnetic moment of those vacancies perpendicular to the applied magnetic field. It is shown how spins of those vacancies produce the anisotropy of the electric permittivity of a diamond, which depends on the external magnetic field and temperature. The temperature- and magnetic-field-dependent renormalization of elastic modules of a diamond caused by spin quadrupole moments of negatively charged nitrogen vacancy centers is calculated. The predicted effects can be important in the practical use of diamond nanocrystals with color vacancies as local sensors in modern nanoelectroncs. Published by the American Physical Society 2025