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In this paper, we analytically investigate the electronic structure of Bernal stacking (AB stacking) graphene evolving from monolayer (a zero-gap semiconductor with a linear Dirac-like spectrum around the Fermi energy) to multi-layer…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Z. F. Wang , Huaixiu Zheng , Q. W. Shi , Jie Chen , Jinlong Yang , J. G. Hou

Motivated by recently reported experimental phase diagrams, we study the effects of CoO6 distortion on the electronic structure in NaxCoO2.yH2O. We construct the multiband tight-binding model by employing the LDA result. Analyzing this…

Superconductivity · Physics 2009-09-29 Masahito Mochizuki , Masao Ogata

A survey is presented of current investigations of the impact of band structure effects on various aspects of the interaction of charged particles with real solids. The role that interband transitions play in the decay mechanism of bulk…

Materials Science · Physics 2009-10-31 J. M. Pitarke , I. Campillo

We study with ARPES the electronic structure of CoO2 slabs, stacked with rock-salt (RS) layers exhibiting a different (misfit) periodicity. Fermi Surfaces (FS) in phases with different doping and/or periodicities reveal the influence of the…

We study the charge-density wave phase in $\textup{TiSe}_2$ by using first principle calculations. We show that, regardless of the local functional used and as long as the cell parameters are in agreement with the experiment,…

Mesoscale and Nanoscale Physics · Physics 2015-10-28 Raffaello Bianco , Matteo Calandra , Francesco Mauri

Due to increased interest in the unusual magnetic and transport behavior of MnSi and its possible relation to its crystal structure (B20) which has unusual coordination and lacks inversion symmetry, we provide a detailed analysis of the…

Strongly Correlated Electrons · Physics 2009-11-10 T. Jeong , W. E. Pickett

The electronic band structure of Bi is calculated using state of the art electronic structure methods, including density functional theory and G$_0$W$_0$ quasiparticle approximations. The delicate ordering of states at the L point of the…

Materials Science · Physics 2022-08-29 Christian König , James C. Greer , Stephen Fahy

The bulk and surface electronic structure of MoAlB(010) is studied by a combination of angle-resolved photoemission spectroscopy and density functional calculations. The observed bulk Fermi-level crossings agree with the previously reported…

We report the molecular beam epitaxial growth, structure, and electronic measurements of single-crystalline LaAuSb films on Al$_2$O$_3$ (0001) substrates. LaAuSb belongs to a broad family of hexagonal $ABC$ intermetallics in which the…

We present an ab initio full-potential linearized augmented plane-wave (FLAPW) study of the structural and electronic properties of the two bulk unstable compounds FeSi (CsCl structure) and FeSi$_2$ (CaF$_2$ structure) which have recently…

Condensed Matter · Physics 2007-05-23 K. A. Mader , H. von Kanel , A. Baldereschi

We performed a combined angle-resolved photoemission spectroscopy and scanning tunneling microscopy study of the electronic structure of electron-doped Ca$_{0.83}$La$_{0.17}$Fe$_2$As$_2$. A surface reconstruction associated with the…

Superconductivity · Physics 2013-01-08 Y. -B. Huang , P. Richard , J. -H. Wang , X. -P. Wang , X. Shi , N. Xu , Z. Wu , A. Li , J. -X. Yin , T. Qian , B. Lv , C. W. Chu , S. H. Pan , M. Shi , H. Ding

We report on total-energy electronic structure calculations in the density-functional theory performed for the ultra-thin atomic layers of Si on Ag(111) surfaces. We find several distinct stable silicene structures:…

Mesoscale and Nanoscale Physics · Physics 2015-05-05 Zhi-Xin Guo , Atsushi Oshiyama

We investigate the electronic structures of iron-based superconductors having perovskite-like blocking layers, %Ca$_4$Al$_2$O$_6$Fe$_2$(As$_{1-x}$P$_x$)$_2$ from first principles. Ca$_4$Al$_2$O$_6$Fe$_2$P$_2$ and…

Superconductivity · Physics 2015-05-30 Taichi Kosugi , Takashi Miyake , Shoji Ishibashi

We review a variety of theoretical and experimental results concerning electronic band structure of superconducting materials based on FeSe monolayers. Three type of systems are analyzed: intercalated FeSe systems A_xFe_2Se_{2-x}S_x and…

Superconductivity · Physics 2017-02-20 I. A. Nekrasov , N. S. Pavlov , M. V. Sadovskii , A. A. Slobodchikov

The layered structure of the iron based superconductors gives rise to a more or less pronounced two-dimensionality of their electronic structure, most pronounced in LaOFeAs. A consequence are distinct surface states to be expected to…

Superconductivity · Physics 2013-05-29 Helmut Eschrig , Alexander Lankau , Klaus Koepernik

SiAlON is a prominent example of systems suitable as hosts for creating materials for light-emitting diodes (LEDs). In this work, the electronic structure of a series of semiordered and disordered SiAlON systems is investigated by means of…

Materials Science · Physics 2022-11-14 Saleem Ayaz Khan , Ondřej Šipr , Jiří Vackář , Ján Minár

The similarity of the electronic structures of NaFeAs and other Fe pnictides has been demonstrated on the basis of first-principle calculations. The global double-degeneracy of electronic bands along X-M and R-A direction indicates the…

Superconductivity · Physics 2015-05-13 Shuiquan Deng , Jürgen Köhler , Arndt Simon

How atoms acquire three-dimensional bulk character is one of the fundamental questions in materials science. Before addressing this question, how atomic layers become a bulk crystal might give a hint to the answer. While atomically thin…

Mesoscale and Nanoscale Physics · Physics 2018-09-28 Ryuta Yagi , Taiki Hirahara , Ryoya Ebisuoka , Tomoaki Nakasuga , Shingo Tajima , Kenji Watanabe , Takashi Taniguchi

The electronic structure of ThPd$_2$Al$_3$, which is isostructural to the heavy fermion superconductor UPd$_2$Al$_3$, was investigated by photoelectron spectroscopy. The band structure and Fermi surfaces of ThPd$_2$Al$_3$ were obtained by…

Strongly Correlated Electrons · Physics 2022-04-06 Shin-ichi Fujimori , Yukiharu Takeda , Hiroshi Yamagami , Jiří Pospíšil , Etsuji Yamamoto , Yoshinori Haga

We investigated the nonequilibrium electronic structure of 2H-NbSe$_2$ by time- and angle-resolved photoemission spectroscopy. We find that the band structure is distinctively modulated by strong photo-excitation, as indicated by the…