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The electronic band structures of two-dimensional materials are significantly different from those of their bulk counterparts, due to quantum confinement and strong modifications of electronic screening. An accurate determination of…

Mesoscale and Nanoscale Physics · Physics 2020-07-08 Tomáš Rauch , Miguel A. L. Marques , Silvana Botti

A scattering method is used to calculate the surface band structure of Al(111) from 8.6 eV below the Fermi level to 9 eV above it. This method has rarely been implemented previously. The complete complex bulk and surface band structure is…

Materials Science · Physics 2011-04-07 M. N. Read

Topology is now securely established as a means to explore and classify electronic states in crystalline solids. This review provides a gentle but firm introduction to topological electronic band structure suitable for new researchers in…

Strongly Correlated Electrons · Physics 2023-09-28 Andrew T. Boothroyd

A promising route to the realization of Majorana fermions is in non-centrosymmetric superconductors, in which spin-orbit-coupling lifts the spin degeneracy of both bulk and surface bands. A detailed assessment of the electronic structure is…

The electronic band structure of Ga(PAsN) with a few percent of nitrogen is calculated in the whole composition of Ga(PAs) host using the state-of-the-art density functional methods including the modified Becke-Johnson functional to…

Materials Science · Physics 2021-09-10 Maciej P. Polak , Robert Kudrawiec , Oleg Rubel

Topological phases for free fermions in systems with crystal symmetry are classified by the topology of the valence band viewed as a vector bundle over the Brillouin zone. Additional symmetries, such as crystal symmetries which act…

Mesoscale and Nanoscale Physics · Physics 2018-12-12 Luuk Stehouwer , Jan de Boer , Jorrit Kruthoff , Hessel Posthuma

Using Brillouin spectroscopy, the first observation has been made of the band structures of nanostructured defect magnonic crystals. The samples are otherwise one-dimensional periodic arrays of equal-width Ni80Fe20 and cobalt nanostripes,…

Mesoscale and Nanoscale Physics · Physics 2014-09-29 Kai Di , Vanessa Li Zhang , Meng Hau Kuok , Hock Siah Lim , Ser Choon Ng , Kulothungasagaran Narayanapillai , Hyunsoo Yang

The article is devoted to the discussion of the high-throughput approach to band structures calculations. We present scientific and computational challenges as well as solutions relying on the developed framework (Automatic Flow,…

Materials Science · Physics 2014-12-24 Wahyu Setyawan , Stefano Curtarolo

Knowing the band structure of materials is one of the prerequisites to understand their properties. Therefore, especially in the last decades, angle-resolved photoemission spectroscopy (ARPES) has become a highly demanded experimental tool…

Materials Science · Physics 2017-10-17 A. M. Shuvaev , V. Dziom , N. N. Mikhailov , Z. D. Kvon , Y. Shao , D. N. Basov , A. Pimenov

We develop an approach to design, engineer, and measure band structures in a synthetic crystal composed of electric circuit elements. Starting from the nodal analysis of a circuit lattice in terms of currents and voltages, our Laplacian…

Mesoscale and Nanoscale Physics · Physics 2019-05-01 Tobias Helbig , Tobias Hofmann , Ching Hua Lee , Ronny Thomale , Stefan Imhof , Laurens W. Molenkamp , Tobias Kiessling

We present a new implementation of the k-space interpolation scheme for electronic structure presented by E. L. Shirley, Phys. Rev. B 54, 16464 (1996). The method permits the construction of a compact k-dependent Hamiltonian using a…

Materials Science · Physics 2009-09-10 David Prendergast , Steven G. Louie

Modern computing facilities grant access to first-principles density-functional theory study of complex physical and chemical phenomena in materials, that require large supercell to properly model the system. However, supercells are…

Materials Science · Physics 2021-06-24 David Dirnberger , Georg Kresse , Cesare Franchini , Michele Reticcioli

In recent years, there have been rapid advances in the parallel fields of electronic and photonic topological crystals. Topological photonic crystals in particular show promise for coherent transport of light and quantum information at…

Mesoscale and Nanoscale Physics · Physics 2019-10-23 María Blanco de Paz , Maia G. Vergniory , Dario Bercioux , Aitzol García-Etxarri , Barry Bradlyn

We present spherical analysis of electron backscatter diffraction (EBSD) patterns with two new algorithms: (1) band localisation and band profile analysis using the spherical Radon transform; (2) orientation determination using spherical…

Materials Science · Physics 2019-09-04 Ralf Hielscher , Felix Bartel , Thomas Benjamin Britton

In topological semimetals such as Weyl, Dirac, and nodal-line semimetals, the band gap closes at points or along lines in k space which are not necessarily located at high-symmetry positions in the Brillouin zone. Therefore, it is not…

Materials Science · Physics 2020-06-09 Motoaki Hirayama , Ryo Okugawa , Shuichi Murakami

We propose a scheme to determine the energy-band dispersion of quasicrystals which does not require any periodic approximation and which directly provides the correct structure of the extended Brillouin zones. In the gap labelling…

Soft Condensed Matter · Physics 2023-02-14 Jean-Marc Gambaudo , Patrizia Vignolo

The Heusler compounds have provided a playground of material candidates for various technological applications based on their highly diverse and tunable properties, controlled by chemical composition and crystal structure. However, physical…

We study the electronic band structure in the K/K' valleys of the Brillouin zone of monolayer WSe2 and MoSe2 by optical reflection and photoluminescence spectroscopy on dual-gated field-effect devices. Our experiment reveals the distinct…

Mesoscale and Nanoscale Physics · Physics 2017-02-21 Zefang Wang , Liang Zhao , Kin Fai Mak , Jie Shan

We present a theoretical study on the band structures of the electron constrained to move along triply-periodic minimal surfaces. Three well known surfaces connected via Bonnet transformations, namely P-, D-, and G-surfaces, are considered.…

Materials Science · Physics 2009-11-11 Nobuhisa Fujita , Osamu Terasaki

The multiband nature of iron-pnictide superconductors is one of the keys to the understanding of their intriguing behavior. The electronic and magnetic properties heavily rely on the multiband interactions between different electron and…

Superconductivity · Physics 2015-12-02 S. Kong , D. Y. Liu , S. T. Cui , S. L. Ju , A. F. Wang , X. G. Luo , L. J. Zou , X. H. Chen , G. B. Zhang , Z. Sun