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Related papers: Electronic structure of BaNi$_2$As$_2$

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In BaNiS2 a Dirac nodal-line band structure exists within a two-dimensional Ni square lattice system, in which significant electronic correlation effects are anticipated. Using scanning tunneling microscopy, we discover signs of…

Strongly Correlated Electrons · Physics 2022-12-28 C. J. Butler , Y. Kohsaka , Y. Yamakawa , M. S. Bahramy , S. Onari , H. Kontani , T. Hanaguri , S. Shamoto

We present a comprehensive study of the low-energy band structure and Fermi surface (FS) topology of $A$Co$_2$As$_2$ ($A=$ Ca, Sr, Ba, Eu) using high-resolution angle-resolved photoemission spectroscopy. The experimental FS topology and…

Superconductivity · Physics 2021-07-13 R. S. Dhaka , Y. Lee , V. K. Anand , Abhishek Pandey , D. C. Johnston , B. N. Harmon , Adam Kaminski

Electronic transitions of the title molecules were measured between 250 and 710 nm using a mass-resolved 1+1' resonant two-photon ionization technique at a resolution of 0.1 nm. Calculations at the B3LYP/aug-cc-pVQZ level of theory support…

Atomic and Molecular Clusters · Physics 2015-03-18 Mathias Steglich , John P. Maier

The results of first-principles electronic structure calculations for the nitrogen-rich nickel nitrides $ {\rm NiN} $ and $ {\rm Ni_2N} $ are presented. The calculations are based on density functional theory and used the generalized…

Strongly Correlated Electrons · Physics 2018-11-27 Abdesalem Houari , Samir F. Matar , Volker Eyert

We investigate the quasiperiodic crystal (LaS)1.196(VS2) by angle and time resolved photoemission spectroscopy. The dispersion of electronic states is in qualitative agreement with band structure calculated for the VS2 slab without the…

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

We have investigated the surface and bulk electronic structures of the superconducting type-II Dirac semimetal 1T-PdSeTe. The superconducting transition temperature $T_C = 3.2$ K was almost twice as high as $T_C = 1.6$ K in 1T-PdTe$_2$.…

Specific heat, resistivity, magnetic susceptibility, linear thermal expansion (LTE), and high-resolution synchrotron X-ray powder diffraction investigations of single crystals Fe1+yTe (0.06 < y < 0.15) reveal a splitting of a single,…

We use density functional theory based first-principles method to investigate the bandstructure and phase stability in the laterally grown hexagonal C$_x$(BN)$_{1-x}$, two-dimensional Graphene and $h$-BN hybrid nanomaterials, which were…

Mesoscale and Nanoscale Physics · Physics 2016-03-21 Ransell D'Souza , Sugata Mukherjee

We used angle-resolved photoemission spectroscopy to investigate the electronic structure of EuFe$_2$As$_2$, EuFe$_2$As$_{1.4}$P$_{0.6}$ and EuFe$_2$P$_2$. We observed doubled core level peaks associated to the pnictide atoms, which are…

Superconductivity · Physics 2013-12-23 P. Richard , C. Capan , J. Ma , P. Zhang , N. Xu , T. Qian , J. D. Denlinger , G. -F. Chen , A. S. Sefat , Z. Fisk , H. Ding

75As NMR and susceptiblity were measured in a Ba(Fe1-xCox)2As2 single crystal for x=6% for various field H values and orientations. The sharpness of the superconducting and magnetic transitions demonstrates a homogeneity of the Co doping x…

Superconductivity · Physics 2015-05-13 Y. Laplace , J. Bobroff , F. Rullier-Albenque , D. Colson , A. Forget

$\mathrm{Ba}\mathrm{Ni}_{2}\mathrm{As}_{2}$, a structural-analogue to the iron-based parent compound $\mathrm{Ba}\mathrm{Fe}_{2}\mathrm{As}_{2}$, offers a unique platform to study the interplay between superconductivity, charge density…

Superconductivity · Physics 2025-05-16 F. Henssler , K. Willa , M. Frachet , T. Lacmann , D. A. Chaney , M. Merz , A. -A. Haghighirad , M. Le Tacon

Neutron diffraction measurements have been performed on a powder sample of BaMn2As2 over the temperature T range from 10 K to 675 K. These measurements demonstrate that this compound exhibits collinear antiferromagnetic ordering below the…

Superconductivity · Physics 2010-11-17 Yogesh Singh , M. A. Green , Q. Huang , A. Kreyssig , R. J. McQueeney , D. C. Johnston , A. I. Goldman

We report the first comprehensive study of the high temperature form ($\alpha$-phase) of iron disilicide. Measurements of the magnetic susceptibility, magnetization, heat capacity and resistivity were performed on well characterized single…

Strongly Correlated Electrons · Physics 2015-04-13 W. Miiller , J. M. Tomczak , J. W. Simonson , G. Smith , G. Kotliar , M. C. Aronson

The electronic structure of the unconventional superconductor UTe$_2$ was studied by resonant photoelectron spectroscopy (RPES) and angle-resolved photoelectron spectroscopy (ARPES) with soft X-ray synchrotron radiation. The partial…

Strongly Correlated Electrons · Physics 2019-09-13 Shin-ichi Fujimori , Ikuto Kawasaki , Yukiharu Takeda , Hiroshi Yamagami , Ai Nakamura , Yoshiya Homma , Dai Aoki

We have carried out detailed high resolution ARPES measurements and band structure calculations to study the electronic structure of CaMnSb$_{2}$. The observed Fermi surface mainly consists of one hole pocket around ${\Gamma}$ point and one…

Atoms under pressure undergo a series of processes and modification of its electronic structure. Examples are the spontaneous ionization, stabilization of excited-state configurations that result in a level-crossing with the ground state of…

Chemical Physics · Physics 2019-07-25 Andres Robles-Navarro , Patricio Fuentealba , Francisco Muños , Carlos Cardenas

When a crystal becomes thinner and thinner to the atomic level, peculiar phenomena discretely depending on its layer-numbers (n) start to appear. The symmetry and wave functions strongly reflect the layer-numbers and stacking order, which…

We employed femtosecond time- and angle-resolved photoelectron spectroscopy to analyze the response of the electronic structure of the 122 Fe-pnictide parent compounds Ba/EuFe_2As_2 and optimally doped BaFe_{1.85}Co_{0.15}As_2 near the…

The mechanism of anomalous superlinear temperature-dependent resistivity, $\rho (T)$, in the metallic unconventional clathrate BaNi$_2$P$_4$ was studied by examining its evolution with artificial disorder induced by low-temperature ($\sim$…

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