Guo, Q.,Pemble, M. E.,Williams, E. M.

1999

August

Surface Science

Filled- and empty-state imaging of (2 x 4) reconstructed InP(001) surfaces with STM

Validated

()

433

410

414410

InP(001) surfaces prepared by sputter-annealing and by annealing in a P-2 atmosphere have been studied using scanning tunnelling microscopy (STM). Annealing a phosphorus-rich (2 x 1) surface to above 600 K leads to the formation of the (2 x 4) surface. The filled- and empty-state STM images obtained fi om large areas with ordered (2 x 4) reconstruction are consistent with a two phosphorus dimer-two missing dimer model. The transition from (2 x 1) to (2 x 4) reconstruction proceeds through an intermediate stage where local regions showing mixed (2 x 4)/(2 x 2) forms are observed. (C) 1999 Elsevier Science B.V. All rights reserved.InP(001) surfaces prepared by sputter-annealing and by annealing in a P-2 atmosphere have been studied using scanning tunnelling microscopy (STM). Annealing a phosphorus-rich (2 x 1) surface to above 600 K leads to the formation of the (2 x 4) surface. The filled- and empty-state STM images obtained fi om large areas with ordered (2 x 4) reconstruction are consistent with a two phosphorus dimer-two missing dimer model. The transition from (2 x 1) to (2 x 4) reconstruction proceeds through an intermediate stage where local regions showing mixed (2 x 4)/(2 x 2) forms are observed. (C) 1999 Elsevier Science B.V. All rights reserved.

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