English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Optical anisotropy of (001)-GaAs surface quantum wells

MPS-Authors
/persons/resource/persons281781

Rönnow,  D.
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

/persons/resource/persons280463

Santos,  P. V.
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

/persons/resource/persons279830

Cardona,  M.
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

/persons/resource/persons279906

Eberl,  K.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Lastras-Martínez, L. F., Rönnow, D., Santos, P. V., Cardona, M., & Eberl, K. (2001). Optical anisotropy of (001)-GaAs surface quantum wells. Physical Review B, 64(24): 245303.


Cite as: https://hdl.handle.net/21.11116/0000-000E-EFDD-D
Abstract
We report a reflectance difference spectroscopy (RDS) study of
the optical anisotropy of GaAs:(001) Surface quantum wells
consisting of a thin GaAs layer (3-30 nm thick) embedded
between an arsenic reconstructed surface and an AlAs barrier.
The RDS spectra display anisotropic contributions from the free
Surface and from the GaAs/AlAs interface. By comparing RDS
spectra for the c(4x4) and (2x4) Surface reconstructions, we
separate these two contributions, and demonstrate that the
anisotropy around the E-1 and E-1 + Delta(1) transitions
comprises a component originating from modifications of bulk
states near the surface. The latter is attributed to
anisotropic strains induced by the surface reconstruction. The
experimental data Lire well described by a model for the RDS
response of the multilayer structures, which also takes into
account the blue energy shifts and the changes in oscillator
strength of the E-1 and E-1 + Delta(1) transitions induced by
quantum-well confinement.