Electron‐dipole resonance of impurity centres embedded in silicon microcavities

Abstract

We present the findings of high efficient light absorption by self-assembled quantum well (SQW) embedded in silicon microcavity that exhibits a distributed feedback identified by the FIR transmission spectra. The excitonic normal-mode coupling (NMC) is found to result in high efficient bound exciton photoluminescence in the range of the Rabi splitting. The localisation of this exciton at an iron-boron pair is shown to cause giant exchange splitting created by strong sp-d mixing in the absence of the external magnetic field, which is revealed by the angular dependencies of photoluminescence spectra that are evidence of the electron-dipole resonance of the trigonal iron-boron pairs.

Superconducting properties of silicon nanostructures

“…3a). The optical detection of magnetic resonance of the single impurity centers in the Si-QW confined by the δ-barriers heavily doped with boron was espeshially performed by the direct measurements of the transmission spectra under such an internal GHz emission in the absence of the external cavity resonator (Bagraev et al 2003a;Bagraev et al 2003b).…”

ODMR of single point defects in silicon nanostructures

“…The NMC regime is revealed by the appearance of the absorption lines marked with arrows in Fig. 3, with the demonstration of the angular-dependent Rabi splitting [3][4][5]. The common origin of these lines related to the Fe-B center results from the same fine structure in both absorption and luminescence parts of the transmission spectrum seen in Fig.…”

“…6. The angular dependences of the luminescence part of the transmission spectrum that is enhanced in the range of Rabi splitting allow its identification as the ODMR spectrum from the trigonal Fe-B pair [3][4][5].…”

“…The goal of the present work was to study the ODMR of single point defects inserted into the Si-QW in the absence of the external cavity resonator, as well as the hf source and recorder, by measuring the transmission (ODMR) spectra within the frameworks of the excitonic normal-mode coupling (NMC) with a single Si-QW inside a 1λ silicon mi-crocavity. This excitonic NMC regime appears to favour the giant triplet-singlet splitting caused by the exchange interaction of the impurity electron states with the s-p electronic states of the host Si-QW, which is revealed by the transmission spectra under the formation of the bound exciton at an impurity center [4,5].…”

Superconductor Properties for Silicon Nanostructures

“…3a). The optical detection of magnetic resonance of the single impurity centers in the Si-QW confined by the δ-barriers heavily doped with boron was especially performed by the direct measurements of the transmission spectra under such an internal GHz emission in the absence of the external cavity resonator (Bagraev et al, 2003a;2003b). .…”