Schmidt, W. G., Bechstedt, F., Fleischer, K., Cobet, C., Esser, N., Richter, W.,https://doi.org/10.1002/1521-396x(200112)188:4&#60;1401::aid-pssa1401&#62;3.0.co;2-1__Onida, G. (2002). GaAs(001): Surface Structure and Optical Properties. Physica Status Solidi (A), 188(4), 1401–1409.https://doi.org/10.1002/1521-396x(200112)188:4&#60;1401::aid-pssa1401&#62;3.0.co;2-1 
LibreCat: /record/13741
DOI: 10.1002/1521-396x(200112)188:4<1401::aid-pssa1401>3.0.co;2-1

Bechstedt, F., Schmidt, W. G., &; Hahn, P. H. (2002). Towards a Complete Many-Body Description: Optical Response of Real Surfaces. Physica Status Solidi (A), 188(4), 1383–1392.https://doi.org/10.1002/1521-396x(200112)188:4&#60;1383::aid-pssa1383&#62;3.0.co;2-g 
LibreCat: /record/13742
DOI: 10.1002/1521-396x(200112)188:4<1383::aid-pssa1383>3.0.co;2-g

Onida, G., Schmidt, W. G., Pulci, O., Palummo, M., Marini, A., Hogan, C., &; Del Sole, R. (2002). Theory for Modeling the Optical Properties of Surfaces. Physica Status Solidi (A), 188(4), 1233–1242.https://doi.org/10.1002/1521-396x(200112)188:4&#60;1233::aid-pssa1233&#62;3.0.co;2-w 
LibreCat: /record/13745
DOI: 10.1002/1521-396x(200112)188:4<1233::aid-pssa1233>3.0.co;2-w

Paget, D., Garreau, Y., Sauvage, M., Chiaradia, P., Pinchaux, R., &; Schmidt, W. G. (2002). X-ray diffraction analysis of the gallium-rich surface of GaAs(001). Physical Review B, 64, 161305(R).https://doi.org/10.1103/physrevb.64.161305 
LibreCat: /record/13749
DOI: 10.1103/physrevb.64.161305

Pulci, O., Lüdge, K., Vogt, P., Esser, N., Schmidt, W. G., Richter, W., &; Bechstedt, F. (2002). First-principles study of InP and GaP(001) surfaces. Computational Materials Science, 32–37.https://doi.org/10.1016/s0927-0256(01)00161-6 
LibreCat: /record/13750
DOI: 10.1016/s0927-0256(01)00161-6

Hingerl, K., Balderas-Navarro, R. ., Bonanni, A., Tichopadek, P., &; Schmidt, W. (2002). On the origin of resonance features in reflectance difference data of silicon. Applied Surface Science, 175–176, 769–776.https://doi.org/10.1016/s0169-4332(01)00114-3 
LibreCat: /record/13752
DOI: 10.1016/s0169-4332(01)00114-3

Schmidt, W. G., Bechstedt, F., &; Bernholc, J. (2002). Terrace and step contributions to the optical anisotropy of Si(001) surfaces. Physical Review B, 63, 045322.https://doi.org/10.1103/physrevb.63.045322 
LibreCat: /record/13754
DOI: 10.1103/physrevb.63.045322

Lu, W., Schmidt, W. G., Briggs, E. L., &; Bernholc, J. (2002). Optical Anisotropy of theSiC(001)-(3×2)Surface: Evidence for the Two-Adlayer Asymmetric-Dimer Model. Physical Review Letters, 85(20), 4381–4384.https://doi.org/10.1103/physrevlett.85.4381 
LibreCat: /record/13755
DOI: 10.1103/physrevlett.85.4381

Esser, N., Schmidt, W. G., Cobet, C., Fleischer, K., Shkrebtii, A. I., Fimland, B. O., &; Richter, W. (2001). Atomic structure and optical anisotropy of III–V(001) surfaces. Journal of Vacuum Science &; Technology B: Microelectronics and Nanometer Structures, 19(5).https://doi.org/10.1116/1.1394730 
LibreCat: /record/13751
DOI: 10.1116/1.1394730

Pulci, O., Schmidt, W. G., &; Bechstedt, F. (2001). Structure and Energetics of P-rich GaP(001) Surfaces. Physica Status Solidi (A), 184(1), 105–110.https://doi.org/10.1002/1521-396x(200103)184:1&#60;105::aid-pssa105&#62;3.0.co;2-d 
LibreCat: /record/13753
DOI: 10.1002/1521-396x(200103)184:1<105::aid-pssa105>3.0.co;2-d

Hingerl, K., Balderas-Navarro, R. ., Bonanni, A., Tichopadek, P., &; Schmidt, W. G. (2001). On the origin of resonance features in reflectance difference data of silicon. Applied Surface Science, 175–176, 769–776.https://doi.org/10.1016/s0169-4332(01)00114-3 
LibreCat: /record/13847
DOI: 10.1016/s0169-4332(01)00114-3

Schmidt, W. G., Bechstedt, F., &; Bernholc, J. (2001). Terrace and step contributions to the optical anisotropy of Si(001) surfaces. Physical Review B, 63.https://doi.org/10.1103/physrevb.63.045322 
LibreCat: /record/13849
DOI: 10.1103/physrevb.63.045322

Pulci, O., Lüdge, K., Schmidt, W. G., &; Bechstedt, F. (2000). First-principles study of (2×1) and (2×2) phosphorus-rich InP(001) surfaces. Surface Science, 464, 272–282.https://doi.org/10.1016/s0039-6028(00)00729-9 
LibreCat: /record/13756
DOI: 10.1016/s0039-6028(00)00729-9

Schmidt, W. G., Bernholc, J., &; Bechstedt, F. (2000). (001) Surfaces of GaP and InP: structural motifs, electronic states and optical signatures. Applied Surface Science, 166, 179–184.https://doi.org/10.1016/s0169-4332(00)00406-2 
LibreCat: /record/13757
DOI: 10.1016/s0169-4332(00)00406-2

Frisch, A. M., Vogt, P., Visbeck, S., Hannappel, T., Willig, F., Braun, W.,https://doi.org/10.1016/s0169-4332(00)00431-1__Esser, N. (2000). Angle Resolved Photoemission Spectroscopy of the InP(001) surface. Applied Surface Science, 166, 224–230.https://doi.org/10.1016/s0169-4332(00)00431-1 
LibreCat: /record/13758
DOI: 10.1016/s0169-4332(00)00431-1

Schmidt, W. G., Mirbt, S., &; Bechstedt, F. (2000). Surface phase diagram of (2×4) and (4×2) reconstructions of GaAs(001). Physical Review B, 62(12), 8087–8091.https://doi.org/10.1103/physrevb.62.8087 
LibreCat: /record/13759
DOI: 10.1103/physrevb.62.8087

Schmidt, W. G., Esser, N., Frisch, A. M., Vogt, P., Bernholc, J., Bechstedt, F.,https://doi.org/10.1103/physrevb.61.r16335__Richter, W. (2000). Understanding reflectance anisotropy: Surface-state signatures and bulk-related features in the optical spectrum ofInP(001)(2×4). Physical Review B, 61, 335–338.https://doi.org/10.1103/physrevb.61.r16335 
LibreCat: /record/13760
DOI: 10.1103/physrevb.61.r16335

Schmidt, W. G., Bechstedt, F., &; Bernholc, J. (2000). Understanding reflectance anisotropy: Surface-state signatures and bulk-related features. Journal of Vacuum Science &; Technology B: Microelectronics and Nanometer Structures, 18(4).https://doi.org/10.1116/1.1305289 
LibreCat: /record/13761
DOI: 10.1116/1.1305289

Schmidt, W. G., &; Bernholc, J. (2000). Step-induced optical anisotropy of Si(111):H surfaces. Physical Review B, 61(11), 7604–7608.https://doi.org/10.1103/physrevb.61.7604 
LibreCat: /record/13762
DOI: 10.1103/physrevb.61.7604

Bernholc, J., Briggs, E. L., Bungaro, C., Buongiorno Nardelli, M., Fattebert, J.-L., Rapcewicz, K.,https://doi.org/10.1002/3527603107.ch33__Zhao, Q. (2000). Large-Scale Applications of Real-Space Multigrid Methods to Surfaces, Nanotubes and Quantum Transport. In Computer Simulation of Materials at Atomic Level (Vol. 1, pp. 685–701). physica status solidi (b).https://doi.org/10.1002/3527603107.ch33 
LibreCat: /record/13763
DOI: 10.1002/3527603107.ch33

Bechstedt, F., Adolph, B., &; Schmidt, W. G. (1999). Ab initio calculation of linear and nonlinear optical properties of semiconductor structures. Brazilian Journal of Physics, 29(4).https://doi.org/10.1590/s0103-97331999000400007 
LibreCat: /record/13764
DOI: 10.1590/s0103-97331999000400007

Schmidt, W. G., FATTEBERT, J. L., BERNHOLC, J., &; BECHSTEDT, F. (1999). SELF-ENERGY EFFECTS IN THE OPTICAL ANISOTROPY OF GaP(001). Surface Review and Letters, 6(6), 1159–1165.https://doi.org/10.1142/s0218625x99001281 
LibreCat: /record/13765
DOI: 10.1142/s0218625x99001281

Bechstedt, F., Pulci, O., &; Schmidt, W. G. (1999). Theoretical Aspects of the Optical Response of Semiconductor Surfaces. Physica Status Solidi (A), 175(5), 5–16.https://doi.org/10.1002/(sici)1521-396x(199909)175:1&#60;5::aid-pssa5&#62;3.0.co;2-9 
LibreCat: /record/13766
DOI: 10.1002/(sici)1521-396x(199909)175:1<5::aid-pssa5>3.0.co;2-9

Esser, N., Schmidt, W. G., Bernholc, J., Frisch, A. M., Vogt, P., Zorn, M.,https://doi.org/10.1116/1.590810__Visbeck, S. (1999). GaP(001) and InP(001): Reflectance anisotropy and surface geometry. Journal of Vacuum Science &; Technology B: Microelectronics and Nanometer Structures, 17(4).https://doi.org/10.1116/1.590810 
LibreCat: /record/13767
DOI: 10.1116/1.590810

Frisch, A. M., Schmidt, W. G., Bernholc, J., Pristovsek, M., Esser, N., &; Richter, W. (1999). (2×4)GaP(001) surface: Atomic structure and optical anisotropy. Physical Review B, 60(4), 2488–2494.https://doi.org/10.1103/physrevb.60.2488 
LibreCat: /record/13768
DOI: 10.1103/physrevb.60.2488

Schmidt, W. G., Briggs, E. L., Bernholc, J., &; Bechstedt, F. (1999). Structural fingerprints in the reflectance anisotropy spectra ofInP(001)(2×4)surfaces. Physical Review B, 59(3), 2234–2239.https://doi.org/10.1103/physrevb.59.2234 
LibreCat: /record/13769
DOI: 10.1103/physrevb.59.2234

Shkrebtii, A. I., Esser, N., Richter, W., Schmidt, W. G., Bechstedt, F., Fimland, B. O.,https://doi.org/10.1103/physrevlett.81.721__Del Sole, R. (1998). Reflectance Anisotropy of GaAs(100): Theory and Experiment. Physical Review Letters, 81(3), 721–724.https://doi.org/10.1103/physrevlett.81.721 
LibreCat: /record/13771
DOI: 10.1103/physrevlett.81.721

Schmidt, W. G., &; Bechstedt, F. (1998). Geometry and electronic structure of InP(001)(2×4) reconstructions. Surface Science, 409(3), 474–484.https://doi.org/10.1016/s0039-6028(98)00260-x 
LibreCat: /record/13772
DOI: 10.1016/s0039-6028(98)00260-x

Schmidt, W. G., Bechstedt, F., Esser, N., Pristovsek, M., Schultz, C., &; Richter, W. (1998). Atomic structure of InP(001)-(2×4): A dimer reconstruction. Physical Review B, 57(23), 14596–14599.https://doi.org/10.1103/physrevb.57.14596 
LibreCat: /record/13773
DOI: 10.1103/physrevb.57.14596

Schmidt, W. G., Käckell, P., &; Bechstedt, F. (1998). In-induced (4 × 2) reconstructions of GaAs(001) surfaces. Applied Surface Science, 123–124, 136–140.https://doi.org/10.1016/s0169-4332(97)00510-2 
LibreCat: /record/13774
DOI: 10.1016/s0169-4332(97)00510-2

Nilen, R. W. N., Connell, S. H., Britton, D. T., Fischer, C. G., Sendezera, E. J., Schmidt, W. G.,https://doi.org/10.4028/www.scientific.net/msf.255-257.475__Verwoerd, W. S. (1997). A High Resolution Investigation of the Anisotropic Electron-Positron Momentum Distribution in Diamond. Materials Science Forum, 255–257, 475–478.https://doi.org/10.4028/www.scientific.net/msf.255-257.475 
LibreCat: /record/13859
DOI: 10.4028/www.scientific.net/msf.255-257.475

Schmidt, W. G. (1997). (4×2) and (2×4) reconstructions of GaAs and InP(001) surfaces. Applied Physics A: Materials Science &; Processing, 65, 581–586.https://doi.org/10.1007/s003390050625 
LibreCat: /record/13775
DOI: 10.1007/s003390050625

Nilen, R. W. N., Connell, S. H., Britton, D. T., Fischer, C. G., Sendezera, E. J., Schaaff, P.,https://doi.org/10.1088/0953-8984/9/29/017__Verwoerd, W. S. (1997). The anisotropic electron - positron momentum distribution in diamond. Journal of Physics: Condensed Matter, 9, 6323–6333.https://doi.org/10.1088/0953-8984/9/29/017 
LibreCat: /record/13776
DOI: 10.1088/0953-8984/9/29/017

Grossner, U., Schmidt, W. G., &; Bechstedt, F. (1997). As on InP(110) studied within density-functional theory. Physical Review B, 56(11), 6719–6726.https://doi.org/10.1103/physrevb.56.6719 
LibreCat: /record/13777
DOI: 10.1103/physrevb.56.6719

Großner, U., Schmidt, W. G., Bechstedt, F., Santos, P. V., Koopmans, B., &; Esser, N. (1997). Chemisorption of arsenic on InP(110). Surface Science, 377–379, 619–622.https://doi.org/10.1016/s0039-6028(96)01469-0 
LibreCat: /record/13778
DOI: 10.1016/s0039-6028(96)01469-0

Schmidt, W. G., &; Bechstedt, F. (1997). Comparison of As-rich and Sb-terminated GaAs(100)(2 × 4) reconstructions. Surface Science, 377–379, 11–14.https://doi.org/10.1016/s0039-6028(96)01318-0 
LibreCat: /record/13779
DOI: 10.1016/s0039-6028(96)01318-0

Schmidt, W. G., &; Bechstedt, F. (1997). Antimony-stabilized GaAs(001)(2×4) reconstructions. Physical Review B, 55(19), 13051–13057.https://doi.org/10.1103/physrevb.55.13051 
LibreCat: /record/13780
DOI: 10.1103/physrevb.55.13051

Nilen, R. W. N., Connell, S. H., Schmidt, W. G., Britton, D. T., Verwoerd, W. S., Sellschop, J. P. F., &; Shrivastava, S. (1997). Electron-positron momentum density distribution in diamond. Applied Surface Science, 116, 330–334.https://doi.org/10.1016/s0169-4332(96)01078-1 
LibreCat: /record/13781
DOI: 10.1016/s0169-4332(96)01078-1

Esser, N., Shkrebtii, A. I., Resch-Esser, U., Springer, C., Richter, W., Schmidt, W. G.,https://doi.org/10.1103/physrevlett.77.4402__Del Sole, R. (1996). Atomic Structure of the Sb-Stabilized GaAs(100)-(2×4) Surface. Physical Review Letters, 77(21), 4402–4405.https://doi.org/10.1103/physrevlett.77.4402 
LibreCat: /record/13782
DOI: 10.1103/physrevlett.77.4402

Schmidt, W. G., &; Bechstedt, F. (1996). Geometry and electronic structure of GaAs(001)(2×4) reconstructions. Physical Review B, 54(23), 16742–16748.https://doi.org/10.1103/physrevb.54.16742 
LibreCat: /record/13783
DOI: 10.1103/physrevb.54.16742

Santos, P. V., Koopmans, B., Esser, N., Schmidt, W. G., &; Bechstedt, F. (1996). Optical Properties of Ordered As Layers on InP(110) Surfaces. Physical Review Letters, 77(4), 759–762.https://doi.org/10.1103/physrevlett.77.759 
LibreCat: /record/13784
DOI: 10.1103/physrevlett.77.759

Schmidt, W. G., &; Bechstedt, F. (1996). Atomic structures of GaAs(100)-(2 × 4) reconstructions. Surface Science, 360(1), L473–L477.https://doi.org/10.1016/0039-6028(96)00728-5 
LibreCat: /record/13785
DOI: 10.1016/0039-6028(96)00728-5

Bechstedt, F., Schmidt, W. G., &; Scholze, A. (1996). Adatoms and vacancies on the diamond(111) surface. Europhysics Letters (EPL), 35(8), 585–590.https://doi.org/10.1209/epl/i1996-00155-0 
LibreCat: /record/13786
DOI: 10.1209/epl/i1996-00155-0

Schmidt, W. (1996). Adsorption of group-V elements on III–V (1 1 0) surfaces. Surface Science Reports, 25, 141–223.https://doi.org/10.1016/s0167-5729(96)00006-4 
LibreCat: /record/13787
DOI: 10.1016/s0167-5729(96)00006-4

Schmidt, W. G., &; Verwoerd, W. . (1996). Annihilation of delocalized positrons: a comparison of diamond and silicon. Physics Letters A, 222(4), 275–280.https://doi.org/10.1016/0375-9601(96)00653-6 
LibreCat: /record/13788
DOI: 10.1016/0375-9601(96)00653-6

Scholze, A., Schmidt, W. G., &; Bechstedt, F. (1996). Structure of the diamond (111) surface: Single-dangling-bond versus triple-dangling-bond face. Physical Review B, 53(20), 13725–13733.https://doi.org/10.1103/physrevb.53.13725 
LibreCat: /record/13789
DOI: 10.1103/physrevb.53.13725

Schmidt, W. G., Käckell, P., &; Bechstedt, F. (1996). 3d core-level shifts at. Surface Science, 357–358, 545–549.https://doi.org/10.1016/0039-6028(96)00220-8 
LibreCat: /record/13790
DOI: 10.1016/0039-6028(96)00220-8

Scholze, A., Schmidt, W. G., &; Bechstedt, F. (1996). Diamond (111) and (100) surface reconstructions. Thin Solid Films, 281–282, 256–259.https://doi.org/10.1016/0040-6090(96)08646-4 
LibreCat: /record/13791
DOI: 10.1016/0040-6090(96)08646-4

Schmidt, W. G., Bechstedt, F., &; Srivastava, G. P. (1996). Phonons at III–V (110) surfaces. Surface Science, 352–354, 83–88.https://doi.org/10.1016/0039-6028(95)01095-5 
LibreCat: /record/13792
DOI: 10.1016/0039-6028(95)01095-5

Schmidt, W. G., Scholze, A., &; Bechstedt, F. (1996). Dimerized, buckled, or ideal chains on the diamond (111)2 × 1 surface? Surface Science, 351, 183–188.https://doi.org/10.1016/0039-6028(95)01270-2 
LibreCat: /record/13793
DOI: 10.1016/0039-6028(95)01270-2