Photoelectron spectroscopy of the laser-excitedX¯ surface state on GaAs(110) using synchrotron radiation
- 15 January 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 47 (4) , 2402-2405
- https://doi.org/10.1103/physrevb.47.2402
Abstract
An excited surface state on GaAs(110) has been investigated using a technique which populates the state with a laser pulse and measures its properties by time-resolved photoelectron spectroscopy using synchrotron radiation. Measurements of momentum, energy, and lifetime show that this is an intrinsic surface state near X¯ in the surface Brillouin zone which equilibrates with bulk conduction electrons during the 5-ns pump pulse. The narrow photoelectron band increases linearly in kinetic energy with the probe photon energy, and no final-state effects appear in the limited energy range investigated.Keywords
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