Structure of high GaAs surfaces – the discovery of the stable GaAs(2 5 11) 
surface

Jacobi, Karl; Geelhaar, Lutz; Márquez, Juan

doi:10.1007/s003390101060

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Structure of high GaAs surfaces – the discovery of the stable GaAs(2 5 11) surface

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Jacobi, Karl
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Geelhaar, Lutz
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Márquez, Juan
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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引用

Jacobi, K., Geelhaar, L., & Márquez, J. (2002). Structure of high GaAs surfaces – the discovery of the stable GaAs(2 5 11) surface. Applied Physics A, 75(1), 113-127. doi:10.1007/s003390101060.

引用: https://hdl.handle.net/11858/00-001M-0000-0011-1477-B

要旨

We present a brief overview of surface structures of high-index GaAs surfaces, putting emphasis on recent progress in our own laboratory. By adapting a commercial scanning tunneling microscope (STM) to our molecular beam epitaxy and ultra high vacuum analysis chamber system, we have been able to atomically resolve the GaAs((1) over bar(1) over bar(3) over bar )B (8x1), (114)Aalpha2(2x1), (137), (3 7 15), and (2 5 11) surface structures. In cooperation with P. Kratzer and M. Scheffler from the Theory Department of the Fritz-Haber Institute we determined the structure of some of these surfaces by comparing, total-energy calculations and STM image simulations with the atomically resolved STM images. We present the results for the {112}, {113}, and {114} surfaces. Then we describe what led us to proceed into the inner parts of the stereographic triangle and to discover the hitherto unknown stable GaAs (2 5 11) surface.