Fig. 4: In-plane magnetic field B∥measurements on the photoluminescence of defect luminescence Q1 and Q2.
From: Spin-defect characteristics of single sulfur vacancies in monolayer MoS2
a Sketch of the in-plane magnetic field B∥configuration (Voigt Geometry). No polarization optics were used in the detection path. b Emission of Q1 remains bright for all fields. c The in-plane field reveals a second state Q2D energetically below Q2. The white dashed lines are guides to the eye for the expected in-plane Zeeman shift of Q1 and the dark-bright-splitting of Q2. The dark-bright splitting ΔDB = 1.4 meV for Q2 is calculated with Eq. (2). d The quadratic dependence of the emission ratio between Q2D and Q2 indicates the brightening of a dark ground state. e Sketch of the defect levels with the possible optical transitions for Q1 and Q2 at finite B∥.
