Surface structure transitions on InAs and GaAs (001) surfaces

Stress and surface energies versus surface nanostructuring: the InGaAs/InP(001) epitaxial system

“…the arsenic termination of the surface then determines a (2 Â 4) reconstruction of the surface unit cell. The reduction of arsenic pressure, at fixed temperature, leads to cation termination of the surface and (4 Â 2) surstructure [21]. The stabilisation of a cation-rich surface needs the growth parameters to be precisely controlled.…”

Quantitative structure determination of GaAs(001) under typical MBE conditions using synchrotron X-ray diffraction

“…In fact, many kinds of ð2 Â 4Þ reconstructions other than b2 have been proposed, as shown in Fig. 1, and even a mixture of these structures is expected [2,6,15,16]. In this section, we show that SXRD is effective in determining the structure, even for such complicated cases where multiple structures coexist [17].…”

Fe monolayers on InAs(001): An in situ study of surface, interface and volume magnetic anisotropy

“…1(a), while Fig. 1(c) presents the schematic representations of possible f4 Â 2g reconstructions taken from [15]. As all unit cells have the same symmetry they cannot be distinguished by LEED.…”

“…The phase diagram of the InAs(0 0 1) surface structure studied by Yamaguchi and Horikoshi [15] using high-energy electron diffraction (RHEED), scanning tunneling microscopy (STM) and Monte Carlo simulations shows a phase transition between an Asstabilized f2 Â 4gand an In-stabilized f4 Â 2g surface reconstruction. Since according to their studies the f4 Â 2g surface reconstruction is more In-rich in order to avoid possible formation of FeAs alloys (magnetically 'dead' layers) the f4 Â 2g surface reconstruction was chosen for our investigation.…”