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Morales-García Á, Rhatigan S, Nolan M, Illas F. On the use of DFT+U to describe the electronic structure of TiO 2 nanoparticles: (TiO 2) 35 as a case study. J Chem Phys 2020; 152:244107. [PMID: 32610938 DOI: 10.1063/5.0012271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
One of the main drawbacks in the density functional theory (DFT) formalism is the underestimation of the energy gaps in semiconducting materials. The combination of DFT with an explicit treatment of the electronic correlation with a Hubbard-like model, known as the DFT+U method, has been extensively applied to open up the energy gap in materials. Here, we introduce a systematic study where the selection of the U parameter is analyzed considering two different basis sets: plane-waves and numerical atomic orbitals (NAOs), together with different implementations for including U, to investigate the structural and electronic properties of a well-defined bipyramidal (TiO2)35 nanoparticle. This study reveals, as expected, that a certain U value can reproduce the experimental value for the energy gap. However, there is a high dependence on the choice of basis set and on the U parameter employed. The present study shows that the linear combination of the NAO basis functions, as implemented in Fritz Haber Institute ab initio molecular simulation (FHI-aims), requires, requires a lower U value than the simplified rotationally invariant approach, as implemented in the Vienna ab initio simulation package (VASP). Therefore, the transfer of U values between codes is unfeasible and not recommended, demanding initial benchmark studies for the property of interest as a reference to determine the appropriate value of U.
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Affiliation(s)
- Ángel Morales-García
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Stephen Rhatigan
- Tyndall National Institute, University College Cork, Lee Maltings, Cork T12 R5CP, Ireland
| | - Michael Nolan
- Tyndall National Institute, University College Cork, Lee Maltings, Cork T12 R5CP, Ireland
| | - Francesc Illas
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain
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Rajagopalan N, Krishnamoorthy P, Jayamoorthy K, Austeria M. Bis (thiourea) strontium chloride as promising NLO material: An experimental and theoretical study. KARBALA INTERNATIONAL JOURNAL OF MODERN SCIENCE 2016. [DOI: 10.1016/j.kijoms.2016.08.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Dessovic P, Mohn P, Jackson RA, Winkler G, Schreitl M, Kazakov G, Schumm T. 229Thorium-doped calcium fluoride for nuclear laser spectroscopy. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2014; 26:105402. [PMID: 24553189 DOI: 10.1088/0953-8984/26/10/105402] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The (229)thorium isotope presents an extremely low-energy isomer state of the nucleus which is expected around 7.8 eV, in the vacuum ultraviolet (VUV) regime. This unique system may bridge between atomic and nuclear physics, enabling coherent manipulation and precision spectroscopy of nuclear quantum states using laser light. It has been proposed to implant (229)thorium into VUV transparent crystal matrices to facilitate laser spectroscopy and possibly realize a solid-state nuclear clock. In this work, we validate the feasibility of this approach by computer modelling of thorium doping into calcium fluoride single crystals. Using atomistic modelling and full electronic structure calculations, we find a persistent large band gap and no additional electronic levels emerging in the middle of the gap due to the presence of the dopant, which should allow direct optical interrogation of the nuclear transition.Based on the electronic structure, we estimate the thorium nuclear quantum levels within the solid-state environment. Precision laser spectroscopy of these levels will allow the study of a broad range of crystal field effects, transferring Mössbauer spectroscopy into the optical regime.
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Affiliation(s)
- P Dessovic
- Center for Computational Materials Science, Vienna University of Technology, Gusshausstrasse 25/134, A-1040, Vienna, Austria
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Gruber C, Bedolla PO, Mohn P. Covalent magnetism and magnetic impurities. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2013; 25:186002. [PMID: 23587739 DOI: 10.1088/0953-8984/25/18/186002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We use the model of covalent magnetism and its application to magnetic insulators applied to the case of insulating carbon doped BaTiO3. Since the usual Stoner mechanism is not applicable we study the possibility of the formation of magnetic order based on a mechanism favoring singly occupied orbitals. On the basis of our model parameters we formulate a criterion similar to the Stoner criterion but also valid for insulators. We describe the model of covalent magnetism using a molecular orbital picture and determine the occupation numbers for spin-up and spin-down states. Our model allows a simulation of the results of our ab initio calculations for E(ℳ) which are found to be in very good agreement.
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Affiliation(s)
- C Gruber
- Center for Computational Materials Science, Vienna University of Technology, Gußhausstraße 25/134, A-1040 Vienna, Austria
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Bennett JW, Garrity KF, Rabe KM, Vanderbilt D. Orthorhombic ABC semiconductors as antiferroelectrics. PHYSICAL REVIEW LETTERS 2013; 110:017603. [PMID: 23383838 DOI: 10.1103/physrevlett.110.017603] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Indexed: 06/01/2023]
Abstract
We use a first-principles rational-design approach to identify a previously unrecognized class of antiferroelectric materials in the Pnma MgSrSi structure type. The MgSrSi structure type can be described in terms of antipolar distortions of the nonpolar P6(3)/mmc ZrBeSi structure type, and we find many members of this structure type are close in energy to the related polar P6(3)mc LiGaGe structure type, which includes many members we predict to be ferroelectric. We highlight known ABC combinations in which this energy difference is comparable to the antiferroelectric-ferroelectric switching barrier of PbZrO(3). We calculate structural parameters and relative energies for all three structure types, both for reported and as-yet hypothetical representatives of this class. Our results provide guidance for the experimental realization and further investigation of high-performance materials suitable for practical applications.
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Affiliation(s)
- Joseph W Bennett
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
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Miao MS, Seshadri R. Rh2O3 versus IrO2: relativistic effects and the stability of Ir4+. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2012; 24:215503. [PMID: 22543445 DOI: 10.1088/0953-8984/24/21/215503] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Despite the wide-ranging applications of binary Rh and Ir oxides, their stability and trends in Rh and Ir oxidation states are not fully understood. Using first-principles electronic structure calculations, we demonstrate that the origin of the categorical stability of Ir(4+) is the relativistic contraction of the 6s orbital and, consequently, an expansion of 5d orbitals. Relativistic effects significantly stabilize Ir(4+)-containing metallic rutile IrO(2) over a wide range of O chemical potentials, despite the choice that Ir has of forming semiconducting corundum Ir(2)O(3). In contrast, Rh is found to display a wider stability range for corundum Rh(2)O(3) with Rh(3+) and a greater propensity for multiple oxidation states.
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Affiliation(s)
- M-S Miao
- Materials Department, University of California, Santa Barbara, CA 93106, USA.
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Gray AX, Papp C, Ueda S, Balke B, Yamashita Y, Plucinski L, Minár J, Braun J, Ylvisaker ER, Schneider CM, Pickett WE, Ebert H, Kobayashi K, Fadley CS. Probing bulk electronic structure with hard X-ray angle-resolved photoemission. NATURE MATERIALS 2011; 10:759-764. [PMID: 21841798 DOI: 10.1038/nmat3089] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Accepted: 07/05/2011] [Indexed: 05/31/2023]
Abstract
Traditional ultraviolet/soft X-ray angle-resolved photoemission spectroscopy (ARPES) may in some cases be too strongly influenced by surface effects to be a useful probe of bulk electronic structure. Going to hard X-ray photon energies and thus larger electron inelastic mean-free paths should provide a more accurate picture of bulk electronic structure. We present experimental data for hard X-ray ARPES (HARPES) at energies of 3.2 and 6.0 keV. The systems discussed are W, as a model transition-metal system to illustrate basic principles, and GaAs, as a technologically-relevant material to illustrate the potential broad applicability of this new technique. We have investigated the effects of photon wave vector on wave vector conservation, and assessed methods for the removal of phonon-associated smearing of features and photoelectron diffraction effects. The experimental results are compared to free-electron final-state model calculations and to more precise one-step photoemission theory including matrix element effects.
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Affiliation(s)
- A X Gray
- Department of Physics, University of California Davis, Davis, California 95616, USA.
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9
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Stroppa A, Picozzi S. Hybrid functional study of proper and improper multiferroics. Phys Chem Chem Phys 2010; 12:5405-16. [DOI: 10.1039/b927508h] [Citation(s) in RCA: 138] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Ukpong AM. Computational studies of the effect of hydrogen on the thermalized positron state in amorphous silicon. Mol Phys 2009. [DOI: 10.1080/00268970903025659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Mokhtari A. High pressure study of the zinc phosphide semiconductor compound in two different phases. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2009; 21:275802. [PMID: 21828500 DOI: 10.1088/0953-8984/21/27/275802] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Electronic and structural properties of the zinc phosphide semiconductor compound are calculated at hydrostatic pressure using the full-potential all-electron linearized augmented plane wave plus local orbital (FP-LAPW+lo) method in both cubic and tetragonal phases. The exchange-correlation potential is treated by the generalized gradient approximation within the scheme of Perdew, Burke and Ernzerhof, GGA96 (1996 Phys. Rev. Lett. 77 3865). Also, the Engel and Vosko GGA formalism, EV-GGA (Engel and Vosko 1993 Phys. Rev. B 47 13164), is used to improve the band-gap results. Internal parameters are optimized by relaxing the atomic positions in the force directions using the Hellman-Feynman approach. The lattice constants, internal parameters, bulk modulus, cohesive energy and band structures have been calculated and compared to the available experimental and theoretical results. The structural calculations predict that the stable phase is tetragonal. The effects of hydrostatic pressure on the behavior of band parameters such as band-gap, valence bandwidths and internal gaps (the energy gap between different parts of the valence bands) are studied using both GGA96 and EV-GGA.
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Affiliation(s)
- Ali Mokhtari
- Simulation Laboratory, Department of Physics, Faculty of Science, Shahrekord University, PB 115, Shahrekord, Iran
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Sifi C, Meradji H, Slimani M, Labidi S, Ghemid S, Hanneche EB, El Haj Hassan F. First principle calculations of structural, electronic, thermodynamic and optical properties of Pb(1-x)Ca(x)S,Pb(1-x)Ca(x)Se and Pb(1-x)Ca(x)Te ternary alloys. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2009; 21:195401. [PMID: 21825479 DOI: 10.1088/0953-8984/21/19/195401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Using first principles total energy calculations within the full potential linearized augmented plane wave (FP-LAPW) method, we have investigated the structural, electronic, thermodynamic and optical properties of Pb(1-x)Ca(x)S, Pb(1-x)Ca(x)Se and Pb(1-x)Ca(x)Te ternary alloys. The effect of composition on lattice parameter, bulk modulus, band gap, refractive index and dielectric function was investigated. Deviations of the lattice constants from Vegard's law and the bulk modulus from linear concentration dependence were observed for the three alloys. Using the approach of Zunger and co-workers, the microscopic origins of band gap bowing have been detailed and explained. The disorder parameter (gap bowing) was found to be mainly caused by the chemical charge transfer effect. On the other hand, the thermodynamic stability of these alloys was investigated by calculating the excess enthalpy of mixing, ΔH(m), as well as the phase diagram. It was shown that all of these alloys are stable at low temperature. The calculated refractive indices and optical dielectric constants were found to vary nonlinearly with Ca composition.
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Affiliation(s)
- C Sifi
- Laboratoire LESIMS, Département de Physique, Faculté des Sciences, Université de Annaba, Algeria
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Zhang F, Crespi VH, Zhang P. Prediction that uniaxial tension along <111> produces a direct band gap in germanium. PHYSICAL REVIEW LETTERS 2009; 102:156401. [PMID: 19518657 DOI: 10.1103/physrevlett.102.156401] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2008] [Indexed: 05/27/2023]
Abstract
We predict a new way to achieve a direct band gap in germanium, and hence optical emission in this technologically important group-IV element: tensile strain along the <111> direction in Ge nanowires. Although a symmetry-breaking band splitting lowers the conduction band at the corner of the Brillouin zone (at the L point), a direct gap of 0.34 eV in the center of the Brillouin zone (at Gamma) can still be achieved at 4.2% longitudinal strain, through an unexpectedly strong nonlinear drop in the conduction band edge at Gamma for strain along this axis. These strains are well within the experimentally demonstrated mechanical limits of single-crystal Ge (or Ge(x)Si(1-x)) nanowires, thereby opening a new material system for fundamental optical studies and applications.
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Affiliation(s)
- Feng Zhang
- Department of Physics and Materials Research Institute, The Pennsylvania State University, 104 Davey Lab, University Park, Pennsylvania, 16802-6300, USA
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Huang P, Carter EA. Advances in correlated electronic structure methods for solids, surfaces, and nanostructures. Annu Rev Phys Chem 2008; 59:261-90. [PMID: 18031211 DOI: 10.1146/annurev.physchem.59.032607.093528] [Citation(s) in RCA: 128] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Calculations of the electronic structure of solids began decades ago, but only recently have solid-state quantum techniques become sufficiently reliable that their application is nearly as routine as quantum chemistry is for molecules. We aim to introduce chemists to the pros and cons of first-principles methods that can provide atomic-scale insight into the properties and chemistry of bulk materials, interfaces, and nanostructures. The techniques we review include the ubiquitous density functional theory (DFT), which is often sufficient, especially for metals; extensions such as DFT + U and hybrid DFT, which incorporate exact exchange to rid DFT of its spurious self-interactions (critical for some semiconductors and strongly correlated materials); many-body Green's function (GW and Bethe-Salpeter) methods for excited states; quantum Monte Carlo, in principle an exact theory but for which forces (hence structure optimization and dynamics) are problematic; and embedding theories that locally refine the quantum treatment to improve accuracy.
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Affiliation(s)
- Patrick Huang
- Department of Mechanical and Aerospace Engineering and Program in Applied and Computational Mathematics, Princeton University, Princeton, New Jersey 08544-5263, USA
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Gass MH, Papworth AJ, Bullough TJ, Chalker PR. Elemental mapping using the Ga 3d and In 4d transitions in the ε2 absorption spectra derived from EELS. Ultramicroscopy 2004; 101:257-64. [PMID: 15450671 DOI: 10.1016/j.ultramic.2004.06.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2003] [Revised: 06/10/2004] [Accepted: 06/21/2004] [Indexed: 11/22/2022]
Abstract
It is proposed that by using the valence-band states in electron energy loss spectroscopy, high-spatial resolution maps of quantitative elemental composition may be acquired with high acquisition rates. Further, it is shown that by using the epsilon(2) spectrum instead of single scattering data, the noise in the observed transitions and associated maps is significantly reduced. The epsilon(2) spectra are derived through a Kramers-Kronig transformation from electron energy loss spectra obtained in a scanning transmission electron microscope. Using transitions that occur in the epsilon(2) absorption spectrum (<40eV), quantitative elemental maps for III-V device structures have been produced. An example is provided using the Ga 3d transition to map a GaInNAs/GaAs laser structure. Weaker transitions such as In 4d have also been used to verify the Ga elemental distribution.
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Affiliation(s)
- M H Gass
- Department of Engineering, Materials Science and Engineering, The University of Liverpool, Liverpool, L69 3GH, UK.
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Podgorny M, Wolfgarten G, Pollmann J. The band structure of SixGe1-xalloys: the self-consistent virtual-crystal approximation. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0022-3719/19/7/002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Svane A, Antoncik E. Electric structures and121Sb isomer shifts of covalent crystals containing Sb as a component. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0022-3719/20/18/006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kotani T, Akai H. KKR-ASA method in exact exchange-potential band-structure calculations. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:16502-16514. [PMID: 9985773 DOI: 10.1103/physrevb.54.16502] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Freeman AJ. Self-consistent relativistic full-potential Korringa-Kohn-Rostoker total-energy method and applications. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:11187-11198. [PMID: 9984902 DOI: 10.1103/physrevb.54.11187] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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21
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Turchi PE, Sterne PA. Fe, Ru, and Os disilicides: Electronic structure of ordered compounds. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:7897-7908. [PMID: 9984465 DOI: 10.1103/physrevb.54.7897] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Engel GE, Pickett WE. Investigation of density functionals to predict both ground-state properties and band structures. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:8420-8429. [PMID: 9984514 DOI: 10.1103/physrevb.54.8420] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Alouani M, Wills JM. Calculated optical properties of Si, Ge, and GaAs under hydrostatic pressure. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:2480-2490. [PMID: 9986095 DOI: 10.1103/physrevb.54.2480] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Willatzen M, Cardona M, Christensen NE. Terms linear in k in the band structure of wurtzite-type semiconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:10703-10714. [PMID: 9982637 DOI: 10.1103/physrevb.53.10703] [Citation(s) in RCA: 125] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Agrawal BK, Yadav PS, Kumar S, Agrawal S. First-principles calculation of Ga-based semiconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:4896-4903. [PMID: 9981673 DOI: 10.1103/physrevb.52.4896] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Günther O, Janowitz C, Jungk G, Jenichen B, Hey R, Däweritz L, Ploog K. Comparison between the electronic dielectric functions of a GaAs/AlAs superlattice and its bulk components by spectroscopic ellipsometry using core levels. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:2599-2609. [PMID: 9981327 DOI: 10.1103/physrevb.52.2599] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Fiorentini V, Baldereschi A. Dielectric scaling of the self-energy scissor operator in semiconductors and insulators. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:17196-17198. [PMID: 9978735 DOI: 10.1103/physrevb.51.17196] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Aulbur WG, Levine ZH, Wilkins JW, Allan DC. Small calculated second-harmonic generation in Si1Ge1. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:10691-10700. [PMID: 9977764 DOI: 10.1103/physrevb.51.10691] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Willatzen M, Cardona M, Christensen NE. Linear muffin-tin-orbital and k. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:18054-18059. [PMID: 9976236 DOI: 10.1103/physrevb.50.18054] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Filippi C, Singh DJ, Umrigar CJ. All-electron local-density and generalized-gradient calculations of the structural properties of semiconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:14947-14951. [PMID: 9975841 DOI: 10.1103/physrevb.50.14947] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Christensen NE, Gorczyca I. Optical and structural properties of III-V nitrides under pressure. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:4397-4415. [PMID: 9976740 DOI: 10.1103/physrevb.50.4397] [Citation(s) in RCA: 291] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Knorr W, Godby RW. Quantum Monte Carlo study of density-functional theory for a semiconducting wire. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:1779-1791. [PMID: 9976368 DOI: 10.1103/physrevb.50.1779] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Khowash PK. Theoretical study of substitutional defects in III-V semiconductors: InP. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:10991-10998. [PMID: 10009942 DOI: 10.1103/physrevb.49.10991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Seitsonen AP, Virkkunen R, Puska MJ, Nieminen RM. Indium and phosphorus vacancies and antisites in InP. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:5253-5262. [PMID: 10011476 DOI: 10.1103/physrevb.49.5253] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Kaiser WJ, Hecht MH, Bell LD, Grunthaner FJ, Liu JK, Davis LC. Ballistic-electron-emission microscopy of electron transport through AlAs/GaAs heterostructures. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:18324-18327. [PMID: 10008486 DOI: 10.1103/physrevb.48.18324] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Lu W, Zhang K, Xie X. Adsorption of a monolayer of iron on beta -SiC(100) surfaces. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:18159-18163. [PMID: 10008454 DOI: 10.1103/physrevb.48.18159] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Cai YQ, Riley JD, Leckey RC, Faul J, Ley L. Angle-resolved photoemission from a GaAs(1-bar1-bar1-bar)-2 x 2 surface: Normal emission study. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:18079-18087. [PMID: 10008446 DOI: 10.1103/physrevb.48.18079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Rohlfing M, Krüger P, Pollmann J. Quasiparticle band-structure calculations for C, Si, Ge, GaAs, and SiC using Gaussian-orbital basis sets. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:17791-17805. [PMID: 10008409 DOI: 10.1103/physrevb.48.17791] [Citation(s) in RCA: 94] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Svane A, Christensen NE, Rodríguez CO, Cappannini OM, Moreno MS. Calculated static and dynamic properties of beta -Sn and Sn-O compounds. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:15712-15718. [PMID: 10008123 DOI: 10.1103/physrevb.48.15712] [Citation(s) in RCA: 124] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Brudevoll T, Citrin DS, Cardona M, Christensen NE. Electronic structure of alpha -Sn and its dependence on hydrostatic strain. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:8629-8635. [PMID: 10007076 DOI: 10.1103/physrevb.48.8629] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Christensen NE, Methfessel M. Density-functional calculations of the structural properties of tin under pressure. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:5797-5807. [PMID: 10009112 DOI: 10.1103/physrevb.48.5797] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Fritsche L, Gu YM. Binding properties of 3d transition metals in a generalized density-functional theory. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:4259-4264. [PMID: 10008896 DOI: 10.1103/physrevb.48.4259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Shirley EL, Martin RM. Many-body core-valence partitioning. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:15413-15427. [PMID: 10005930 DOI: 10.1103/physrevb.47.15413] [Citation(s) in RCA: 102] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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García A, Cohen ML. Effect of Ga 3d states on the structural properties of GaAs and GaP. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:6751-6754. [PMID: 10004651 DOI: 10.1103/physrevb.47.6751] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Petersen JW, Svane A, Holzschuh E. Densities of states of substitutional tin and germanium impurities in GaAs, GaP, and InP: Experiment and theory. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:1811-1822. [PMID: 10006217 DOI: 10.1103/physrevb.47.1811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Shirley EL, Zhu X, Louie SG. Core polarization in semiconductors: Effects on quasiparticle energies. PHYSICAL REVIEW LETTERS 1992; 69:2955-2958. [PMID: 10046684 DOI: 10.1103/physrevlett.69.2955] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Aryasetiawan F. Self-energy of ferromagnetic nickel in the GW approximation. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:13051-13064. [PMID: 10003344 DOI: 10.1103/physrevb.46.13051] [Citation(s) in RCA: 94] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Cai YQ, Stampfl AP, Riley JD, Leckey RC, Usher B, Ley L. Two-dimensional electronic structure Ei(ki||,kiperp) of GaAs(001) studied by angle-resolved photoemission. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:6891-6901. [PMID: 10002392 DOI: 10.1103/physrevb.46.6891] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Fiorentini V. Semiconductor band structures at zero pressure. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:2086-2091. [PMID: 10003884 DOI: 10.1103/physrevb.46.2086] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Perlin P, Gorczyca I, Christensen NE, Grzegory I, Teisseyre H, Suski T. Pressure studies of gallium nitride: Crystal growth and fundamental electronic properties. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:13307-13313. [PMID: 10001412 DOI: 10.1103/physrevb.45.13307] [Citation(s) in RCA: 82] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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