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The anisotropy in the electronic structure of the inherently nanolaminated ternary phase Cr$_{2}$GeC is investigated by bulk-sensitive and element selective soft x-ray absorption/emission spectroscopy. The angle-resolved absorption/emission…

Materials Science · Physics 2015-10-01 Martin Magnuson , Maurizio Mattesini , Matthieu Bugnet , Per Eklund

Electronic structure calculations using quantum Monte Carlo (QMC) methods conclusively show that pure CaB$_6$ is a narrow-gap semiconductor with an $X$-point gap $\sim 1.3$ eV. This should put to rest controversies as to whether the…

Materials Science · Physics 2007-05-23 Zachary M. Helms , Prasenjit Sen , Lubos Mitas

We performed a detailed study of the intrinsic electronic structure of YRu2Si2 employing angleresolved photoemission spectroscopy (ARPES) and density-functional theory (DFT) based firstprinciples calculations. Electrical and magnetic…

The electronic structures of Ba(Fe,Ru)$_2$As$_2$ and Sr(Fe,Ir)$_2$As$_2$ are investigated using density functional calculations. We find that these systems behave as coherent alloys from the electronic structure point of view. In…

Superconductivity · Physics 2009-05-30 Lijun Zhang , D. J. Singh

We have performed accurate ab initio total energy calculations using the full-potential linearized augmented plane wave (FP-LAPW) method with the generalized gradient approximation (GGA) for the exchange-correlation potential to…

Materials Science · Physics 2009-11-13 I. R. Shein , A. L. Ivanovskii

We study the electronic structure of graphene in the presence of either sevenfolds or eightfolds by using a gauge field-theory model. The graphene sheet with topological defects is considered as a negative cone surface with infinite…

Materials Science · Physics 2009-11-13 D. V. Kolesnikov , V. A. Osipov

Electronic structure calculations using the augmented spherical wave method have been performed for CuRhO2. For this semiconductor crystallizing in the delafossite structure, it is found that the valence band maximum is mainly due to the 4d…

Strongly Correlated Electrons · Physics 2009-09-03 Antoine Maignan , Volker Eyert , Christine Martin , Stefan Kremer , Raymond Fresard , Denis Pelloquin

We studied the electronic structure of the heavy fermion compound Yb(Ru$_{1-x}$Rh$_{x}$)$_2$Ge$_2$ with $x=0$ and nominally $x=0.125$ using ARPES and LDA calculations. We find a valence band structure of Yb corresponding to a non-integer…

Strongly Correlated Electrons · Physics 2019-03-04 H. Pfau , E. W. Rosenberg , P. Massat , B. Moritz , M. Hashimoto , D. Lu , I. R. Fisher , Z. -X. Shen

Recent density functional theory (DFT) calculations for KFe2As2 have shown to be insufficient to satisfactorily describe angle-resolved photoemission (ARPES) measurements as well as observed de Haas van Alphen (dHvA) frequencies. In the…

Strongly Correlated Electrons · Physics 2014-08-21 Steffen Backes , Daniel Guterding , Harald O. Jeschke , Roser Valenti

Based on first-principles calculations we performed a systematic study of the energetic stability, structural characterization, and electronic properties of the fully oxidized $A_{2}B$, electrenes, with the following combinations, (i)…

Materials Science · Physics 2022-06-15 Pedro H. Souza , Danilo Kuritza , José E. Padilha , Roberto H. Miwa

PbPdO$_2$, a ternary compound containing the lone-pair active ion Pb$^{2+}$ and the square-planar d$^8$ Pd$^{2+}$ ion, has attracted recent interest because of the suggestion that its electronic structure, calculated within density…

Materials Science · Physics 2011-11-03 Joshua A. Kurzman , Mao-Sheng Miao , Ram Seshadri

Using density functional molecular dynamics simulations we study the electronic properties of glassy g-GeS$_2$. We compute the electronic density of states, which compares very well with XPS measurements, as well as the partial EDOS and the…

Disordered Systems and Neural Networks · Physics 2009-11-10 Sebastien Blaineau , Philippe Jund

Delafossites represent natural heterostructures which can host rather different electronic characteristics in their constituting layers. The design of novel heterostructure architectures highlighting the competition between such varying…

Materials Science · Physics 2020-03-26 Frank Lechermann , Raphael Richter

We have performed ab initio density functional calculations of thin Ag films on the Pd(111) surface. We have calculated the structural properties and the electronic bands of the Ag/Pd systems. There is a band gap in the electronic density…

Materials Science · Physics 2007-05-23 Predrag Lazic , Damir Sokcevic , Radovan Brako

The electronic structure of pyrite-type cobalt phosphosulfide (CoSP) has been studied using density-functional theory. The calculated band structure reveals the non-magnetic semiconducting character of the compound. The electronic structure…

Materials Science · Physics 2020-03-24 Abdesalem Houari , Fares Benissad

This paper contains both recently published and original results concerning the electronic structure, bonding and relevant properties of (Mg-Al)B2. We analyse the electronic structure formation of bulk and surface states, study the nuclear…

Superconductivity · Physics 2007-05-23 V. P. Antropov , K. D. Belashchenko , M. van Schilfgaarde , S. N. Rashkeev

In 2015, a new two dimensional (2D) carbon allotrope, called phagraphene, was theoretically proposed. Based on this structure, we propose here a new boron nitride structure called phaBN. It is composed by three types of rings: pentagons,…

Materials Science · Physics 2020-12-09 J. M. Pontes , N. F. Frazão , David L. Azevedo , Jonas R. F. Lima

Electronic and stability properties of quasi-2D alkylammonium perovskites are investigated using density functional theory (DFT) calculations and validated experimentally on selected classes of compounds. Our analysis is focused on…

In the search for novel materials for vacuum electron sources, multi-alkali antimonides and in particular sodium-potassium-antimonides have been recently regarded as especially promising due to their favorable electronic and optical…

Materials Science · Physics 2021-07-23 Raymond Amador , Holger-Dietrich Saßnick , Caterina Cocchi

Spin-polarized band calculations for supercells of SrB$_{6}$, where a La-, In- or Al- impurity or a vacancy is replacing one Sr, are performed within the local spin density approximation. Moderately large cells with 8 formula units (56…

Materials Science · Physics 2009-11-07 T. Jarlborg
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