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Electronic structure calculations of the Verwey ground state of magnetite, Fe3O4, using density functional theory with treatment of on-site Coulomb interactions (DFT+U scheme) are reported. These calculations use the recently-published…

强关联电子 · 物理学 2013-01-16 Mark Senn , Ingo Loa , Jon P. Wright , J. Paul Attfield

Within the framework of the density functional theory, we calculate the electronic structure of $\alpha$-(BEDT-TTF)$_2$I$_3$ at 8K and room temperature at ambient pressure and with uniaxial strain along the $a$- and $b$-axes. We confirm the…

强关联电子 · 物理学 2009-11-11 Hiori Kino , Tsuyoshi Miyazaki

Starting from the random phase approximation for the weakly coupled multiband tightly-bounded electron systems, we calculate the dielectric matrix in terms of intraband and interband transitions. The advantages of this representation with…

凝聚态物理 · 物理学 2016-08-31 P. Zupanovic , A. Bjelis , S. Barisic

Phase transitions in 1/4-filled quasi-one-dimensional molecular conductors are studied theoretically on the basis of extended Hubbard chains including electron-lattice interactions coupled by interchain Coulomb repulsion. We apply the…

强关联电子 · 物理学 2007-05-23 Hitoshi Seo , Yukitoshi Motome , Takeo Kato

We investigate the magnetic order and related strongly-correlated effects in an one-dimensional Ising-Kondo lattice with transverse field. This model is the anisotropic limit of the conventional isotropic Kondo lattice model, in the sense…

强关联电子 · 物理学 2024-01-02 Xiaofan Zhou , Jingtao Fan , Suotang Jia

Molecular wires (MW) are the fundamental building blocks for molecular electronic devices. They consist of a molecular unit connected to two continuum reservoirs of electrons (usually metallic leads). We rely on Landauer theory as the basis…

介观与纳米尺度物理 · 物理学 2009-10-31 Eldon Emberly , George Kirczenow

Impressive advances in the field of molecular spintronics allow one to study electron transport through individual magnetic molecules embedded between metallic leads in the purely quantum regime of single electron tunneling. Besides…

强关联电子 · 物理学 2019-09-05 Alessandro Chiesa , Emilio Macaluso , Paolo Santini , Stefano Carretta , Eva Pavarini

Interesting emergent behavior in quantum materials arises when the interaction of electrons with the lattice leads to partial localization and ordering of charge at low temperatures. The triangular lattice of some transition metal…

强关联电子 · 物理学 2023-01-16 E. S. Bozin , M. Abeykoon , S. Conradson , G. Baldinozzi , P. Sutar , D. Mihailovic

FeSe is a fascinating superconducting material at the frontier of research in condensed matter physics. Here we provide an overview on the current understanding of the electronic structure of FeSe, focusing in particular on its low energy…

超导电性 · 物理学 2018-01-01 Amalia I. Coldea , Matthew D. Watson

We study the differential conductance, spectral density and magnetization, for a quantum dot coupled to two conducting leads as a function of bias voltage, magnetic field and temperature. The system is modeled with the Anderson model solved…

强关联电子 · 物理学 2009-11-11 A. A. Aligia

To elucidate the pressure evolution of the electronic structure in an antiferromagnetic dimer-Mott (DM) insulator ${\beta}^{\prime}$-(BEDT-TTF)$_2$ICl$_2$, which exhibits superconductivity at 14.2 K under 8 GPa, we measured the polarized…

强关联电子 · 物理学 2015-09-01 K. Hashimoto , R. Kobayashi , H. Okamura , H. Taniguchi , Y. Ikemoto , T. Moriwaki , S. Iguchi , M. Naka , S. Ishihara , T. Sasaki

We employ two Tight-Binding (TB) approaches to study the electronic structure and hole or electron transfer in B-DNA monomer polymers and dimer polymers made up of $N$ monomers (base pairs): (I) at the base-pair level, using the on-site…

We present numerical calculations of electronic structure and transport in Penrose approximants. The electronic structure of perfect approximants shows a spiky density of states and a tendency to localization that is more pronounced in the…

材料科学 · 物理学 2014-08-19 Guy Trambly de Laissardière , Attila Szállás , Didier Mayou

The downscaling of silicon-based structures and proto-devices has now reached the single atom scale, representing an important milestone for the development of a silicon-based quantum computer. One especially notable platform for atomic…

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…

材料科学 · 物理学 2015-10-01 Martin Magnuson , Maurizio Mattesini , Matthieu Bugnet , Per Eklund

In order to characterize in detail the charge density wave (CDW) transition of 1$T$-VSe$_2$, its electronic structure and lattice dynamics are comprehensively studied by means of x-ray diffraction, angle resolved photoemission (ARPES),…

The structural, electronic, mechanic, vibrational and thermodynamic properties of Ti2SiB which is a hypothetical MAX phase compound, have been investigated using density functional theory calculations. The structural optimization of Ti2SiB…

材料科学 · 物理学 2018-05-15 Aysenur Gencer , Gokhan Surucu

Density functional theory (DFT) simulations corrected by the intramolecular Coulomb repulsion U, are performed to evaluate the vibrational inelastic electron tunneling spectroscopy (IETS) of O_2 molecules on Ag(110). Semilocal DFT…

介观与纳米尺度物理 · 物理学 2010-03-24 S. Monturet , M. Alducin , N. Lorente

A recent paper [Lee {\em et al.}, J. Korean Cryt. Growth Cryst. Techn. {\bf 33}, 61 (2023)] provides some experimental indications that Pb$_{10-x}$Cu$_x$(PO$_4$)$_6$O with $x\approx 1$, coined LK-99, might be a room-temperature…

超导电性 · 物理学 2023-09-26 Liang Si , Karsten Held

Buried two dimensional electron gasses (2DEGs) have recently attracted considerable attention as a testing ground for both fundamental physics and quantum computation applications. Such 2DEGs can be created by phosphorus delta (\delta)…

材料科学 · 物理学 2013-06-04 Jill A. Miwa , Philip Hofmann , Michelle Y. Simmons , Justin W. Wells