Elastic constants and Fermi surface topology change in Calaverite AuTe2: A density functional study

2014 ◽  
Author(s):  
Vijay Kumar Gudelli ◽  
V. Kanchana
Keyword(s):  
Fermi Surface ◽  
Elastic Constants ◽  
Density Functional ◽  
Surface Topology ◽  
Functional Study ◽  
Topology Change ◽  
Density Functional Study ◽  
Fermi Surface Topology

scholarly journals Transport signatures of Fermi surface topology change in BiTeI

2015 ◽  
Vol 91 (20) ◽  
Author(s):  
Linda Ye ◽  
Joseph G. Checkelsky ◽  
Fumitaka Kagawa ◽  
Yoshinori Tokura
Keyword(s):  
Fermi Surface ◽  
Surface Topology ◽  
Topology Change ◽  
Fermi Surface Topology

Fermi Surface Topology of Na 0.5 CoO 2 from the Hybrid Density Functional

2005 ◽  
Vol 22 (12) ◽  
pp. 3155-3158 ◽  
Author(s):  
Chen Zhao-Ying ◽  
Xiang Hong-Jun ◽  
Yang Jin-Long
Keyword(s):  
Fermi Surface ◽  
Density Functional ◽  
Surface Topology ◽  
Fermi Surface Topology ◽  
Hybrid Density Functional

scholarly journals Fermi surface of LaFe2P2—a detailed density functional study

2019 ◽  
Vol 32 (2) ◽  
pp. 025503
Author(s):  
T Förster ◽  
I Kraft ◽  
I Sheikin ◽  
A D Bianchi ◽  
J Wosnitza ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Density Functional ◽  
Functional Study ◽  
Density Functional Study

Signatures of Fermi surface topology change in the nodal-line semimetal ZrSiSe1−xTex

2021 ◽  
Vol 103 (16) ◽  
Author(s):  
Jiangpeng Song ◽  
Meng Song ◽  
Zhihao Li ◽  
Jian Wang ◽  
Yihao Wang ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Nodal Line ◽  
Surface Topology ◽  
Topology Change ◽  
Fermi Surface Topology

scholarly journals Global perspectives of the bulk electronic structure of URu2Si2 from angle-resolved photoemission

2021 ◽  
Author(s):  
Jonathan D Denlinger ◽  
J Kang ◽  
Lenart Dudy ◽  
J W Allen ◽  
Kyoo Kim ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Electronic Structure ◽  
Fermi Surface ◽  
Density Functional ◽  
High Energy ◽  
Surface Topology ◽  
High Symmetry ◽  
Functional Theory ◽  
X Ray ◽  
Fermi Surface Topology

Abstract Previous high-resolution angle-resolved photoemission (ARPES) studies of URu2Si2 have characterized the temperature-dependent behavior of narrow-band states close to the Fermi level (E F) at low photon energies near the zone center, with an emphasis on electronic reconstruction due to Brillouin zone folding. A substantial challenge to a proper description is that these states interact with other hole-band states that are generally absent from bulk-sensitive soft x-ray ARPES measurements. Here we provide a more global k-space context for the presence of such states and their relation to the bulk Fermi surface topology using synchrotron-based wide-angle and photon energy-dependent ARPES mapping of the electronic structure using photon energies intermediate between the low-energy regime and the high-energy soft x-ray regime. Small-spot spatial dependence, f-resonant photoemission, Si 2p core-levels, x-ray polarization, surface-dosing modification, and theoretical surface slab calculations are employed to assist identification of bulk versus surface state character of the E F-crossing bands and their relation to specific U- or Si-terminations of the cleaved surface. The bulk Fermi surface topology is critically compared to density functional theory and to dynamical mean field theory calculations. In addition to clarifying some aspects of the previously measured high symmetry Γ, Z and X points, incommensurate 0.6a* nested Fermi-edge states located along Z-N-Z are found to be distinctly different from the density functional theory Fermi surface prediction. The temperature evolution of these states above THO, combined with a more detailed theoretical investigation of this region, suggests a key role of the N-point in the hidden order transition.

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