electron poor materials research group

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Electron poor materials research group Group meeting Sept. 08, 2010 Theory-VASP and simple tight binding

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Electron poor materials research group. Group meeting Sept. 08, 2010 Theory-VASP and simple tight binding. GaAs Comparison. Cardona, Phys. Rev. B 38, 1806–1827 (1988). GaAs Comparison. Richard, PHYSICAL REVIEW B 70, 235204 (2004). GaAs Comparison. Elabsy, Physica B 405 (2010) 3709–3713. - PowerPoint PPT Presentation

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Page 1: Electron poor materials research group

Electron poor materials research group

Group meeting Sept. 08, 2010

Theory-VASP and simple tight binding

Page 2: Electron poor materials research group

GaAs Comparison

Cardona, Phys. Rev. B 38, 1806–1827 (1988)

Page 3: Electron poor materials research group

GaAs ComparisonRichard, PHYSICAL REVIEW B 70, 235204 (2004)

Page 4: Electron poor materials research group

GaAs Comparison

Elabsy, Physica B 405 (2010) 3709–3713

Page 5: Electron poor materials research group

InSb ComparisonGang Zhu, Semicond. Sci. Technol. 23 025009 (2008)

Page 6: Electron poor materials research group

InSb Comparison

Mohammad, J Mater Sci 43:2935–2946 (2008)

Page 7: Electron poor materials research group

ZnSe ComparisonCui, Journal of Alloys and Compounds 472 (2009) 294–298

Page 8: Electron poor materials research group

ZnTe ComparisonKhenata,Computational Materials Science 38 29–38 (2006)

Page 9: Electron poor materials research group

Compound Propertiescurrently all calculated with LDA

ZnSb ZnAs Mg3Sb2 Li2Sb InSb GaSb ZnTe ZnSe

Eg 0.0801 i 0.3494 i 0.1672 i metal metal (0.17d ~1) 0.2439 d (0.68d ~1)1.313 d (2.82 ~2) 1.296 d (2.8 ~3)

a 6.097 (6.202) 5.679 (5.576) 4.499 (4.568) 7.736 (7.946) 4.581 (4.581) 4.266 (4.310) 4.315 (4.315) 4.021 (4.021)b 7.584 (7.742) 7.277 (7.123) 4.499 (4.568) 7.736 (7.946) 4.581 (4.581) 4.266 (4.310) 4.315 (4.315) 4.021 (4.021)c 7.984 (8.100) 7.559 (7.433) 7.116 (7.229) 6.355 (6.527) 4.581 (4.581) 4.266 (4.310) 4.315 (4.315) 4.021 (4.021)

α 90 (90) 90 (90) 90 (90) 90 (90) 60 (60) 60 (60) 60 (60) 60 (60)β 90 (90) 90 (90) 90 (90) 90 (90) 60 (60) 60 (60) 60 (60) 60 (60)γ 90 (90) 90 (90) 120 (120) 120 (120) 60 (60) 60 (60) 60 (60) 60 (60)

vol 369.2 (388.9) 312.4 (295.3) 124.7 (130.6) 329.4 (356.9) 67.97 (67.97) 54.9 (56.63) 56.83 (56.83) 45.98 (45.98)

~1 Introduction to Solid State Physics 8th Ed., Kittel (2005)~2 Khenata, Computational Materials Science 38 (2006) 29–38~3 Cui, Journal of Alloys and Compounds 472 (2009) 294–298

Page 10: Electron poor materials research group

Tight Binding according to Harris.Electronic Structure and the Properties of Solids, Harris 1980

VASP USING LDA ON THE RIGHTTight Binding on the LEFT

Page 11: Electron poor materials research group

Tight Binding according to Harris.Electronic Structure and the Properties of Solids, Harris 1980

VASP USING LDA ON THE RIGHTTight Binding on the LEFT

Page 12: Electron poor materials research group

Tight Binding according to Harris.Electronic Structure and the Properties of Solids, Harris 1980

VASP USING LDA ON THE RIGHTTight Binding on the LEFT

Page 13: Electron poor materials research group

Tight Binding according to Harris.Electronic Structure and the Properties of Solids, Harris 1980

VASP USING LDA ON THE RIGHTTight Binding on the LEFT