Non-Classical Smoothening of Nano-Scale Surface Corrugations

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We report the first experimental observation of non-classical morphological equilibration of a corrugated crystalline surface. Periodic rippled structures with wavelengths of 290-550 nm were made on Si(OO1) by sputter rippling and then annealed at 650 - 750 &deg;C. In contrast to the classical exponential decay with time, the ripple amplitude, A<sub>{lambda}</sub>(t), followed an inverse linear decay, A<sub>{lambda}</sub>(t)= A<sub>{lambda}</sub>(0)/(1 +k<sub>{lambda}</sub>t), agreeing with a prediction of Ozdemir and Zangwill. We measure the activation energy for surface relaxation to be 1.6&plusmn;0.2 eV, consistent with an interpretation that dimers mediate transport.

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13 Pages

Creation Information

Aziz, Michael J.; Chason, Eric; Erlebacher, Jonah; Floro, Jerrold A. & Sinclair, Michael B. May 20, 1999.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA
    Place of Publication: Albuquerque, New Mexico

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Description

We report the first experimental observation of non-classical morphological equilibration of a corrugated crystalline surface. Periodic rippled structures with wavelengths of 290-550 nm were made on Si(OO1) by sputter rippling and then annealed at 650 - 750 &deg;C. In contrast to the classical exponential decay with time, the ripple amplitude, A<sub>{lambda}</sub>(t), followed an inverse linear decay, A<sub>{lambda}</sub>(t)= A<sub>{lambda}</sub>(0)/(1 +k<sub>{lambda}</sub>t), agreeing with a prediction of Ozdemir and Zangwill. We measure the activation energy for surface relaxation to be 1.6&plusmn;0.2 eV, consistent with an interpretation that dimers mediate transport.

Physical Description

13 Pages

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  • Journal Name: Physical Review Letters

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  • Other: DE00007055
  • Report No.: SAND99-1287J
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 7055
  • Archival Resource Key: ark:/67531/metadc710632

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  • May 20, 1999

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • Dec. 6, 2016, 2:07 p.m.

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Aziz, Michael J.; Chason, Eric; Erlebacher, Jonah; Floro, Jerrold A. & Sinclair, Michael B. Non-Classical Smoothening of Nano-Scale Surface Corrugations, article, May 20, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc710632/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.