Phys. Rev. Lett. 72, 1356–1359 (1994)Hydrogen adsorption on and desorption from Si: Considerations on the applicability of detailed balanceReceived 16 June 1993; published in the issue dated 28 February 1994 The translational energy of D2 desorbed from Si(100) and Si(111) surfaces was measured and found roughly equal to the thermal expectation at the surface temperature Ts. Combining these results with previously measured internal state distributions, the total energy of the desorbed molecules is approximately equal to the equilibrium expectation at Ts. Thus adsorption experiments, which suggest a large energetic barrier, are at variance with desorption experiments, which exhibit a trivial adsorption barrier, and the applicability of detailed balance for this system needs to be reexamined. © 1994 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.72.1356
DOI:
10.1103/PhysRevLett.72.1356
PACS:
68.35.Ja, 82.20.Hf, 82.20.Pm, 82.65.My
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.