1
|
Wahlberg N, Madsen AØ. Implications of X-ray thermal diffuse scattering in integrated Bragg intensities of silicon and cubic boron nitride. J Appl Crystallogr 2017. [DOI: 10.1107/s1600576717014376] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
This article describes a theoretical quantification of the thermal diffuse scattering (TDS) contribution to the integrated intensities of single-crystal diffraction from silicon and cubic boron nitride. The TDS intensity is calculatedab initioand the intensity contribution to the Bragg peak determined by integration of a volume of appropriate size. The effect of including TDS in the structure factors is assessed in a subsequent refinement, where the effect on the atomic displacement parameters and the residual Fourier maps is inspected. In both compounds changes caused solely by the TDS inclusion are observed. Particularly, adding TDS to the structure factors of silicon produces significant features in the residual Fourier maps and a change in the atomic displacement parameter. Significant effects are also present at low temperatures. Thus, it is important to address the effect of TDS when pursuing high-accuracy charge densities or if analyzing the atomic displacement parameters.
Collapse
|
2
|
Karch K, Pavone P, Windl W, Schütt O, Strauch D. Ab initio calculation of structural and lattice-dynamical properties of silicon carbide. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:17054-17063. [PMID: 9976102 DOI: 10.1103/physrevb.50.17054] [Citation(s) in RCA: 87] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
3
|
Hofmann M, Zywietz A, Karch K, Bechstedt F. Lattice dynamics of SiC polytypes within the bond-charge model. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:13401-13411. [PMID: 9975532 DOI: 10.1103/physrevb.50.13401] [Citation(s) in RCA: 85] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
4
|
Kulda J, Strauch D, Pavone P, Ishii Y. Inelastic-neutron-scattering study of phonon eigenvectors and frequencies in Si. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:13347-13354. [PMID: 9975526 DOI: 10.1103/physrevb.50.13347] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
5
|
Pavone P, Karch K, Schütt O, Strauch D, Windl W, Giannozzi P, Baroni S. Ab initio lattice dynamics of diamond. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:3156-3163. [PMID: 10008738 DOI: 10.1103/physrevb.48.3156] [Citation(s) in RCA: 123] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
6
|
Greiner A, Mahler G. Phenomenological field theories for layered materials: Equations of motion and continuity conditions. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:7132-7143. [PMID: 10002420 DOI: 10.1103/physrevb.46.7132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
7
|
Grein CH, Cardona M. Local vibrational modes of Ge-rich c-Si1-xGex alloys. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:8328-8333. [PMID: 10000665 DOI: 10.1103/physrevb.45.8328] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
8
|
Zollner S, Cardona M, Gopalan S. Isotope and temperature shifts of direct and indirect band gaps in diamond-type semiconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:3376-3385. [PMID: 10001912 DOI: 10.1103/physrevb.45.3376] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
9
|
Molinàs-Mata P, Cardona M. Planar force-constant models and internal strain parameter of Ge and Si. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:9799-9809. [PMID: 9996681 DOI: 10.1103/physrevb.43.9799] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
10
|
Grein CH, Zollner S, Cardona M. Microscopic theory of second-order Raman scattering in silicon under uniaxial stress. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:6633-6641. [PMID: 9998106 DOI: 10.1103/physrevb.43.6633] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|