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Volumn 71, Issue 14, 1993, Pages 2276-2279

Energetics of GaAs(100)-(2×4) and -(4×2) reconstructions

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Indexed keywords

EID: 3242886097 PISSN: 00319007 EISSN: None Source Type: Journal
DOI: 10.1103/PhysRevLett.71.2276 Document Type: Article

Times cited : (215)

References (23)

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6
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- Atomic structure of GaAs(100)-(2×1) and (2×4) reconstructed surfaces
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8
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- Guo-Xin Qian
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- Yin, M.T.¹ Cohen, M.L.²

13
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- and references therein. In the present work the (4 times 2) cells were computed using the same thick slab as the (2 times 2) cells.
- (1992) Phys. Scr. , vol.45 T , pp. 272
- Froyen, S.¹ Bernard, J.E.² Osório, R.³ Zunger, A.⁴

19
- 84927904210
- The reaction γ ( 2 times 4 ) -> case 3 over 4 β ( 2 times 4 ) + case 1 over 4 c ( 4 times 4 ) is exothermic: Δ E = 0.06 eV/(1 times 1). Our result for the relative energies of the β ( 2 times 4 ) and γ ( 2 times 4 ) surfaces is slightly different from that obtained in Ref. [7]. We find that the chemical potential for which these two surfaces have equal formation energies is much closer to the As-rich limit than reported in Ref. [7]. Our result, that the formation energies are very similar in the As-rich limit, can be understood by noting that the local bonding environment of the As atoms is not significantly altered when As is removed from a bulk As reservoir and added to the β ( 2 times 4 ) surface to form the γ ( 2 times 4 ).

20
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- and L.-E. Swartz, in, edited by, E. M. Anastassakis, J. D. Joannopoulos, World Scientific, Singapore
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21
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- Tunneling spectroscopy on compensating surface defects induced by Si doping of molecular-beam epitaxially grown GaAs(001)
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- Pashley, M.D.¹ Haberern, K.W.² Feenstra, R.M.³

22
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- Atom-resolved imaging and spectroscopy on the GaAs(001) surface using tunneling microscopy
- (1992) Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures , vol.10 , pp. 1881
- Bressler-Hill, V.¹

23
- 84927904209
- The energy for a (2 times 1) ordering of the Ga atoms is slightly higher [by 0.02 eV(1 times 1)] than the c ( 2 times 2 ). The ( 2 times 1) ordered structure is stable with respect to a dimerization of the Ga atoms which would create a (2 times 2) structure.

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