1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Anomalous optical magnetic shift of self-assembled GaSb/GaAs quantum dots
Rent:
Rent this article for
USD
10.1063/1.3607973
/content/aip/journal/jap/110/1/10.1063/1.3607973
http://aip.metastore.ingenta.com/content/aip/journal/jap/110/1/10.1063/1.3607973
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) AFM surface image of GaSb QD sample in 1 μm square image area. (b) The zero-field PL spectra taken at varied excitation powers from 10 mWcm−2 to 200 mWcm−2. The inset depicts the QD and the WL emission peak energies as a function of 1/3 power of the excitation power density.

Image of FIG. 2.
FIG. 2.

(Color online) The peak energy shifts of the GaSb QDs and the WL as a function of the magnetic field at different excitation powers in a Faraday configuration. The arrow indicates the low field region where the energy shift has a quadratic dependence on the magnetic field. The inset reveals the integrated PL intensity normalized to that at a zero field of the GaSb QDs and the WL vs the magnetic field.

Image of FIG. 3.
FIG. 3.

(Color online) The PL peak energy shifts of the QDs and the WL as a function of the magnetic field at different excitation powers in a Voigt configuration. The excitation power densities are 10, 20, 40, 100, and 200 mWcm−2. The arrows indicate the onset point and the upper limit of the energy redshift effect. The inset shows the PL spectra of the GaSb QDs in magnetic fields.

Image of FIG. 4.
FIG. 4.

(Color online) (a) The PL shifts of the QDs vs the magnetic field in the low field region. (b) The integrated PL intensity normalized to that at a zero field of the GaSb QDs and the WL vs the magnetic field. The arrows indicate the onset points and the upper limit of the energy redshift and the rapid intensity increase effects.

Image of FIG. 5.
FIG. 5.

(Color online) (a) The calculated electron and hole wave functions at a zero magnetic field. The QD and WL are placed in the center of the matrix to simplify the calculation. The arrows indicate the direction of the magnetic force acted on electrons. (b) The vertical e-h spatial separation vs the magnetic field for different hole occupancy in the QD. (c) The oscillator strength normalized to that at a zero field as a function of the magnetic field. The arrow represents the onset point of the oscillator strength enhancement.

Loading

Article metrics loading...

/content/aip/journal/jap/110/1/10.1063/1.3607973
2011-07-11
2014-04-20
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Anomalous optical magnetic shift of self-assembled GaSb/GaAs quantum dots
http://aip.metastore.ingenta.com/content/aip/journal/jap/110/1/10.1063/1.3607973
10.1063/1.3607973
SEARCH_EXPAND_ITEM