Time-averaging within the excited state of the nitrogen-vacancy centre in diamond

Date

2009-06-03

Authors

Rogers, Lachlan
McMurtrie, Roger
Sellars, Matthew
Manson, Neil

Journal Title

Journal ISSN

Volume Title

Publisher

Institute of Physics Publishing

Abstract

The emission intensity of diamond samples containing negatively charged nitrogen-vacancy centres are measured as a function of magnetic field along the 111 direction for various temperatures. At low temperatures the responses are sample and stress dependent and can be modelled in terms of the previous understanding of the 3E excited state fine structure which is strain dependent. At room temperature the responses are largely sample and stress independent, and modelling involves invoking a strain independent excited state with a single zero field spin-level splitting of 1.42 GHz. The change in behaviour is attributed to a temperature dependent averaging process over the components of the excited state orbital doublet. It decouples orbit and spin and at high temperature the spin levels become independent of any orbit splitting. One significant implication of this averaging is that it simplifies the development of room temperature applications.

Description

Keywords

Keywords: Diamond samples; Emission intensity; Fine structures; High temperature; Low temperatures; Room temperature; Spin levels; Strain-dependent; Stress-dependent; Temperature dependent; Time averaging; Zero fields; Diamonds; Magnetic fields; Spin dynamics; Vaca

Citation

New Journal of Physics 11.063007 (2009)

Source

New Journal of Physics

Type

Journal article

Book Title

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DOI

10.1088/1367-2630/11/6/063007

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