1
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Harrison N, Chappell GL, Tobash PH. Indications of flat bands driving the δ to α volume collapse of plutonium. Proc Natl Acad Sci U S A 2024; 121:e2308729121. [PMID: 38354265 PMCID: PMC10895343 DOI: 10.1073/pnas.2308729121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 01/05/2024] [Indexed: 02/16/2024] Open
Abstract
On cooling from the melt, plutonium (Pu) undergoes a series of structural transformations accompanied by a ≈ 28% reduction in volume from its δ phase to its α phase at low temperatures. While Pu's partially filled 5f-electron shells are known to be involved, their precise role in the transformations has remained unclear. By using calorimetry measurements on α-Pu and gallium-stabilized δ-Pu combined with resonant ultrasound and X-ray scattering data to account for the anomalously large softening of the lattice with temperature, we show here that the difference in electronic entropy between the α and δ phases dominates over the difference in phonon entropy. Rather than finding an electronic specific heat characteristic of broad f-electron bands in α-Pu, as might be expected to occur within a Kondo collapsed phase in analogy with cerium, we find it to be indicative of flatter subbands. An important role played by Pu's 5f electrons in the formation of its larger unit cell α phase comprising inequivalent lattice sites and varying bond lengths is therefore suggested.
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Affiliation(s)
- Neil Harrison
- MPA-MAGLAB, Los Alamos National Laboratory, Los Alamos, NM87545
| | - Greta L. Chappell
- MPA-MAGLAB, Los Alamos National Laboratory, Los Alamos, NM87545
- MST-16, Los Alamos National Laboratory, Los Alamos, NM87545
| | - Paul H. Tobash
- MST-16, Los Alamos National Laboratory, Los Alamos, NM87545
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2
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Li RS, Liu ZY, Wang YM, Li S, Zhang PJ, Cao ZL. Inter-configuration fluctuation for 5f electrons in uranium hexafluoride: A many-body study. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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3
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Ab Initio Study of the Effect of Mono-Vacancies on the Metastability of Ga-Stabilized δ-Pu. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10217628] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Most experimental studies on metallic Pu are on the room temperature monoclinic α-phase or the fcc Ga stabilized δ-phase. Stabilized δ-phase Pu-Ga alloys are metastable and exhibit a martensitic phase transformation to α’-phase at low temperatures, or applied shear, with concentrations lower than three atomic percent Ga. By using first principles, we explore the metastability of δ-phase by investigating the structural and electronic behavior induced by Ga alloying and by a mono-vacancy point defect. We find that a site substitutional Ga induces a tetragonal distortion in the lattice affected by hybridization of Ga 4p and Pu 6d states. With the addition of a mono-vacancy, a monoclinic or tetragonal distortion forms locally (dependent on its distance from Ga), and decoupling of the Pu 5f and 6d states and broadening of the 6d states occurs. This response enables hybridization of Pu 6d with the Ga 4p states affecting the mono-vacancy formation energy. Thus, stabilization of the fcc lattice correlates with hybridization of Pu 6d states with Ga 4p states, and this becomes more evident in the presence of a mono-vacancy.
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4
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Liu Y, Shen T, Zhang H, Rubenstein B. Unveiling the Finite Temperature Physics of Hydrogen Chains via Auxiliary Field Quantum Monte Carlo. J Chem Theory Comput 2020; 16:4298-4314. [DOI: 10.1021/acs.jctc.0c00288] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuan Liu
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Tong Shen
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Hang Zhang
- Department of Chemical Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Brenda Rubenstein
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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5
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Zhang L, Sun B, Zhang Q, Liu H, Liu K, Song H. First-Principles Study of the Hydrogen Resistance Mechanism of PuO 2. ACS OMEGA 2020; 5:7211-7218. [PMID: 32280861 PMCID: PMC7143429 DOI: 10.1021/acsomega.9b03790] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 03/12/2020] [Indexed: 06/11/2023]
Abstract
The in-depth investigation of hydrogen behaviors in Pu-oxide overlayers (mainly PuO2 and α-Pu2O3) is critical for modeling the complex induction period of Pu hydriding. Within density functional theory (DFT) + U + D3 schemes, our systematic first-principles calculations and ab initio thermodynamic evaluations reveal that the hydrogen incorporation, dissolution behaviors, and diffusion mechanism in PuO2 are quite different from those in α-Pu2O3, among which the highly endothermic incorporation and dissolution of hydrogen are the primary hydrogen resistance mechanism of PuO2. Since its difficult recombination, atomic H is the preferred existence state in PuO2, but H will recombine spontaneously in α-Pu2O3. In PuO2, H diffusion is always clinging to O anions, whereas in α-Pu2O3, H2 prefers to migrate along O vacancies with higher barriers. H dissolution in intact PuO2 is very difficult, which can only be driven by extremely high pressure PH2 and temperature. Based on a series of theoretical studies, we conclude that the main interactions between hydrogen and Pu-oxide overlayers are not involved with chemical reactions, and intact PuO2 can effectively inhibit hydrogen permeation.
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Affiliation(s)
- Le Zhang
- Institute
of Applied Physics and Computational Mathematics, No. 2 of Fenghao East Road, Beijing 100094, People’s Republic of China
| | - Bo Sun
- Institute
of Applied Physics and Computational Mathematics, No. 2 of Fenghao East Road, Beijing 100094, People’s Republic of China
| | - Qili Zhang
- Institute
of Applied Physics and Computational Mathematics, No. 2 of Fenghao East Road, Beijing 100094, People’s Republic of China
| | - Haifeng Liu
- Institute
of Applied Physics and Computational Mathematics, No. 2 of Fenghao East Road, Beijing 100094, People’s Republic of China
| | - Kezhao Liu
- Science
and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, People’s Republic of China
| | - Haifeng Song
- Institute
of Applied Physics and Computational Mathematics, No. 2 of Fenghao East Road, Beijing 100094, People’s Republic of China
- CAEP
Software Center for High Performance Numerical Simulation, No. 6 of Huayuan Road, Beijing 100088, People’s Republic of China
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6
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Li RS, Lu X, Wang JT, Xin DQ, Yao XG. A many-body perspective on dual 5f states in two plutonium hydrides. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2019.137079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Valence fluctuation for f electrons in XGaO3 (X = Pu, Ce): a perspective from dynamic mean field theory. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06829-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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8
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Chen QY, Luo XB, Xie DH, Li ML, Ji XY, Zhou R, Huang YB, Zhang W, Feng W, Zhang Y, Huang L, Hao QQ, Liu Q, Zhu XG, Liu Y, Zhang P, Lai XC, Si Q, Tan SY. Orbital-Selective Kondo Entanglement and Antiferromagnetic Order in USb_{2}. PHYSICAL REVIEW LETTERS 2019; 123:106402. [PMID: 31573295 DOI: 10.1103/physrevlett.123.106402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 07/22/2019] [Indexed: 06/10/2023]
Abstract
In heavy-fermion compounds, the dual character of f electrons underlies their rich and often exotic properties like fragile heavy quasiparticles, a variety of magnetic orders and unconventional superconductivity. 5f-electron actinide materials provide a rich setting to elucidate the larger and outstanding issue of the competition between magnetic order and Kondo entanglement and, more generally, the interplay among different channels of interactions in correlated electron systems. Here, by using angle-resolved photoemission spectroscopy, we present the detailed electronic structure of USb_{2} and observe two different kinds of nearly flat bands in the antiferromagnetic state of USb_{2}. Polarization-dependent measurements show that these electronic states are derived from 5f orbitals with different characters; in addition, further temperature-dependent measurements reveal that one of them is driven by the Kondo correlations between the 5f electrons and conduction electrons, while the other reflects the dominant role of the magnetic order. Our results on the low-energy electronic excitations of USb_{2} implicate orbital selectivity as an important new ingredient for the competition between Kondo correlations and magnetic order and, by extension, in the rich landscape of quantum phases for strongly correlated f electron systems.
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Affiliation(s)
- Q Y Chen
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - X B Luo
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - D H Xie
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - M L Li
- Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
| | - X Y Ji
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - R Zhou
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - Y B Huang
- Shanghai Institute of Applied Physics, CAS, Shanghai, 201204, China
| | - W Zhang
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - W Feng
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - Y Zhang
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - L Huang
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - Q Q Hao
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - Q Liu
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - X G Zhu
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - Y Liu
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - P Zhang
- Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
| | - X C Lai
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - Q Si
- Department of Physics and Astronomy and Rice Center for Quantum Materials, Rice University, Houston, Texas 77005, USA
| | - S Y Tan
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
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9
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Ghosh PS, Arya A. First-principles study of phase stability, electronic and mechanical properties of plutonium sub-oxides. Phys Chem Chem Phys 2019; 21:16818-16829. [PMID: 31334519 DOI: 10.1039/c9cp01858a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The formation energies (ΔHf) of fluorite PuO2, α-Pu2O3 and sub-oxides PuO2-x (0.0 < x < 0.5) are determined from atomic scale simulations based on density functional theory (DFT) employing the generalised gradient approximation (GGA) corrected with an effective Hubbard parameter (Ueff). The variation of structural and electronic properties of PuO2 and α-Pu2O3 is determined while ramping up Ueff from 0 eV to 5 eV (Ueff-ramping method) to treat the presence of metastable magnetic states and to determine the most suitable Ueff value matching the experiments. The GGA+U calculated lattice parameter variation as a function of stoichiometry (a(x)) for PuO2-x shows a positive volume of relaxation and an almost linear variation presented by the relation a(x) = a0- 0.522738x, where a0 is the equilibrium lattice parameter of PuO2. The GGA+U calculated ΔHf values of PuO2-x lie above the tie line connecting the ΔHf of PuO2 and Pu2O3, and with decreasing O/Pu ratio, the stability of the sub-oxides increases. The crystal and electronic structure analysis of the oxygen vacancy in PuO2 shows outward anisotropic relaxation of four Pu atoms around the vacancy site. The electronic charges within the Wigner-Seitz sphere around these Pu atoms show an overall gain of only (0.12-0.22)e per Pu atom, signifying an incomplete localization of charges. Finally, the GGA+U calculated single crystal elastic constant values decrease continuously with decreasing O/Pu ratio from 2.0 to 1.5. The rate of decrease of the average C11 is almost 11-15 times higher compared to the rate of decrease of C12 and C44.
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Affiliation(s)
- P S Ghosh
- Materials Science Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
| | - A Arya
- Materials Science Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
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10
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Dutta P, Pandey SK. Effects of correlations and temperature on the electronic structures and related physical properties of FeSi and CoSi: a comprehensive study. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2019; 31:145602. [PMID: 30634173 DOI: 10.1088/1361-648x/aafdce] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Here, we report detailed investigations of the temperature dependent (100-800 K) electronic structures of FeSi and CoSi by using a DFT+DMFT method where self-consistently calculated values of U and J are used. The calculated spectral functions are found to provide fairly good representation for the experimentally observed photoemission spectra for both the compounds. For FeSi, the density of states (DOS) closer to the Fermi level are found to increase with the increase in temperature up to 450 K and then they decrease, whereas, for CoSi DOS continuously decrease with an increase in temperature. The electronic states of FeSi are greatly influenced by electronic correlations while they are moderately influenced in CoSi. From momentum resolved spectral functions, the excitations have shown enhanced broadening with temperature rise in FeSi whereas an opposite behavior is observed in CoSi. In FeSi, the maximum effect of temperature on the lifetime of [Formula: see text] quasiparticles states is observed where it first decreases to 400 K and then increases, and finally becomes almost infinite at 800 K. The temperature dependent behavior of DOS and quasiparticle lifetime help us in understanding the experimentally observed electrical resistivity and Seebeck coefficient for these compounds. The calculated effective magnetic moment [Formula: see text] for Fe (∼2.5 [Formula: see text], which is closer to the experimental value) is temperature independent. The electronic structures of these compounds are showing the existence of mixed configurations with [Formula: see text] and [Formula: see text] for FeSi and CoSi, respectively. Average electrons in the d orbitals are found as ∼6.5 and ∼7.7 for FeSi and CoSi, respectively, with charge fluctuations [Formula: see text] 0.9 are obtained for both materials. This suggests that both the compounds are lying in the intermediate coupling regime of electronic correlations.
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Affiliation(s)
- Paromita Dutta
- School of Basic Sciences, Indian Institute of Technology Mandi, Kamand, Himachal Pradesh-175005, India
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11
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Amadon B, Dorado B. A unified and efficient theory for the structural properties of actinides and phases of plutonium. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:405603. [PMID: 30136656 DOI: 10.1088/1361-648x/aadc7a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We show that a calculation using density functional theory (DFT) in the generalized gradient approximation (GGA) supplemented by an explicit Coulomb interaction term between correlated electrons (GGA+U), can accurately describe structural properties of (1) the room temperature phases of U, Np, Pu, Am and Cm, and (2) the α, β, γ, δ and ϵ phases of plutonium, as does the combination of GGA with dynamical mean field theory (DMFT). It thus changes the view on the role of electronic interaction in these systems and opens the way to fast calculations of structural properties in actinides metallic system. We use ab initio values of effective Coulomb interactions and underline that Hund's exchange and spin-orbit coupling are of utmost importance in these calculations. Secondly, we show that phonons properties in δ plutonium are impacted by strong interactions. The GGA+DMFT results exhibits a lattice instability for the transverse (1 1 1) phonon mode. Moreover the amplitude of this lattice instability is consistent with the experimental temperature of stability of this phase. Our calculation thus shows that when the δ phase is thermodynamically unstable (at 0 K), it is also dynamically unstable.
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12
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Han Q, Birol T, Haule K. Phonon Softening due to Melting of the Ferromagnetic Order in Elemental Iron. PHYSICAL REVIEW LETTERS 2018; 120:187203. [PMID: 29775328 DOI: 10.1103/physrevlett.120.187203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 01/03/2018] [Indexed: 06/08/2023]
Abstract
We study the fundamental question of the lattice dynamics of a metallic ferromagnet in the regime where the static long-range magnetic order is replaced by the fluctuating local moments embedded in a metallic host. We use the ab initio density functional theory + embedded dynamical mean-field theory functional approach to address the dynamic stability of iron polymorphs and the phonon softening with an increased temperature. We show that the nonharmonic and inhomogeneous phonon softening measured in iron is a result of the melting of the long-range ferromagnetic order and is unrelated to the first-order structural transition from the bcc to the fcc phase, as is usually assumed. We predict that the bcc structure is dynamically stable at all temperatures at normal pressure and is thermodynamically unstable only between the bcc-α and the bcc-δ phases of iron.
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Affiliation(s)
- Qiang Han
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854-8019, USA
| | - Turan Birol
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Kristjan Haule
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854-8019, USA
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13
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Havela L, Mašková S, Kolorenč J, Colineau E, Griveau JC, Eloirdi R. Electronic properties of Pu 19Os simulating β-Pu: the strongly correlated Pu phase. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:085601. [PMID: 29388557 DOI: 10.1088/1361-648x/aaa520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We established the basic electronic properties of ζ-Pu19Os, which is a close analogue to β-Pu, and its low-temperature variety, η-Pu19Os. Their magnetic susceptibility is 15% higher than for δ-Pu. A specific heat study of ζ-Pu19Os shows a soft lattice similar to δ-Pu, leading to a low Debye temperature Θ D = 101 K. The linear electronic coefficient γ related to the quasiparticle density of states at the Fermi level points to a higher value, 55 ± 2 mJ (mol Pu K2)-1, compared to 40 mJ (mol K2)-1 for δ-Pu. The results confirm that β-Pu is probably the most strongly correlated Pu phase, as had been indicated by resistivity measurements. The volume and related Pu-Pu spacing is clearly not the primary tuning parameter for Pu metal, as the β-Pu density stands close to the ground-state α-phase and is much higher than that for δ-Pu. The η-Pu19Os phase has a record γ-value of 74 ± 2 mJ (mol Pu K2)-1. The enhancement is not reproduced by LDA+DMFT calculations in the fcc structure, which suggests that multiple diverse sites can be the key to the understanding of β-Pu.
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Affiliation(s)
- L Havela
- Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 12116 Prague 2, Czech Republic
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14
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Stability and optical properties of plutonium monoxide from first-principle calculation. Sci Rep 2017; 7:12167. [PMID: 28939821 PMCID: PMC5610248 DOI: 10.1038/s41598-017-12428-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 09/08/2017] [Indexed: 11/10/2022] Open
Abstract
The resolution of questions about the existence of condensed plutonium monoxide (PuO) has long been hindered by lack of thermochemical data. Here we perform first-principles calculation to investigate the reaction Pu2O3 + Pu → 3 PuO and find that PuO is thermodynamically unstable under ambient pressure. We also find that pressure could stabilize PuO by strengthening the hybridization between Pu-5f/6d and O-2p states. Moreover, the dynamical stability of NaCl-type PuO is verified by the phonon calculation. Optical properties such as reflectivity are also predicted for the detection of metallic PuO.
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15
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Brito WH, Aguiar MCO, Haule K, Kotliar G. Metal-Insulator Transition in VO_{2}: A DFT+DMFT Perspective. PHYSICAL REVIEW LETTERS 2016; 117:056402. [PMID: 27517782 DOI: 10.1103/physrevlett.117.056402] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Indexed: 06/06/2023]
Abstract
We present a theoretical investigation of the electronic structure of rutile (metallic) and M_{1} and M_{2} monoclinic (insulating) phases of VO_{2} employing a fully self-consistent combination of density functional theory and embedded dynamical mean field theory calculations. We describe the electronic structure of the metallic and both insulating phases of VO_{2}, and propose a distinct mechanism for the gap opening. We show that Mott physics plays an essential role in all phases of VO_{2}: undimerized vanadium atoms undergo classical Mott transition through local moment formation (in the M_{2} phase), while strong superexchange within V dimers adds significant dynamic intersite correlations, which remove the singularity of self-energy for dimerized V atoms. The resulting transition from rutile to dimerized M_{1} phase is adiabatically connected to the Peierls-like transition, but is better characterized as the Mott transition in the presence of strong intersite exchange. As a consequence of Mott physics, the gap in the dimerized M_{1} phase is temperature dependent. The sole increase of electronic temperature collapses the gap, reminiscent of recent experiments.
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Affiliation(s)
- W H Brito
- Departamento de Física, Universidade Federal de Minas Gerais, C. P. 702, 30123-970 Belo Horizonte, Minas Gerais, Brazil
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - M C O Aguiar
- Departamento de Física, Universidade Federal de Minas Gerais, C. P. 702, 30123-970 Belo Horizonte, Minas Gerais, Brazil
| | - K Haule
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
| | - G Kotliar
- Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
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16
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Sun B, Liu H, Song H, Zhang G, Zheng H, Zhao XG, Zhang P. The different roles of Pu-oxide overlayers in the hydrogenation of Pu-metal: Anab initiomolecular dynamics study based on van der Waals density functional (vdW-DF)+U. J Chem Phys 2014; 140:164709. [DOI: 10.1063/1.4873418] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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