First-principles identification of quasi-two-dimensional Fermi surface nesting on a metallicc(2×2)−In/Cu(001)surface

2002 ◽  
Vol 66 (7) ◽  
Author(s):  
Xing Gao ◽  
Yu-mei Zhou ◽  
Si-cheng Wu ◽  
Ding-sheng Wang
Keyword(s):  
Fermi Surface ◽  
First Principles ◽  
Two Dimensional ◽  
Fermi Surface Nesting

Observation of Hidden Fermi Surface Nesting in a Two Dimensional Conductor

1996 ◽  
Vol 76 (17) ◽  
pp. 3172-3175 ◽  
Author(s):  
Klaus Breuer ◽  
Cristian Stagarescu ◽  
Kevin E. Smith ◽  
Martha Greenblatt ◽  
Kandalam Ramanujachary
Keyword(s):  
Fermi Surface ◽  
Two Dimensional ◽  
Fermi Surface Nesting

TWO-DIMENSIONAL HUME-ROTHERY PHASES

1990 ◽  
Vol 04 (13) ◽  
pp. 1983-1992
Author(s):  
R. S. MARKIEWICZ
Keyword(s):  
Phase Transitions ◽  
Fermi Surface ◽  
Three Dimensional ◽  
Organic Superconductors ◽  
Intercalation Compounds ◽  
Oxide Superconductors ◽  
Two Dimensional ◽  
Graphite Intercalation ◽  
Fermi Surface Nesting ◽  
The Individual

The traditional Hume-Rothery phases are Cu-bronzes or other (three-dimensional) alloys, which show a series of phase transitions at fixed electron-per-atom ratios, independent of the particular atomic constituents. The transitions are driven by Fermi surface nesting within the individual phases. It is shown that similar transitions appear to be a pervasive feature of two-dimensional systems. Examples are given involving graphite intercalation compounds, organic superconductors, and the new high T c oxide superconductors.

ELECTRON MAGNETIC RESONANCE FERMI SURFACE IMAGING: APPLICATIONS TO ORGANIC CONDUCTORS AND Sr2RuO4

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3109-3112
Author(s):  
S. HILL ◽  
A. KOVALEV ◽  
M. M. MOLA ◽  
C. PALASSIS ◽  
Z. Q. MAO ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Cyclotron Resonance ◽  
Charge Density Wave ◽  
Density Wave ◽  
Organic Conductors ◽  
Metallic State ◽  
Surface Imaging ◽  
Two Dimensional ◽  
Fermi Surfaces ◽  
Fermi Surface Nesting

We report detailed angle dependent studies of the metallic state microwave (40 to 200 GHz) magneto-conductivity of single crystal samples of the α- (BEDT-TTF) 2 KHg(SCN) 4 organic charge density wave conductor, and the perovskite superconductor Sr 2 RuO 4. We observe series' of resonant absorptions which we attribute to periodic orbit resonances - a phenomenon closely related to cyclotron resonance. By performing measurements on several samples, and in different electromagnetic field configurations, we are able to couple to different orbital modes (+ harmonics), which derive from deformations (warpings) of the quasi-one and quasi-two-dimensional Fermi surfaces of these compounds. These studies provide vital information concerning interlayer dispersion which, in turn, affects the Fermi surface nesting characteristics which are believed to play a crucial role in the low temperature physics of these exotic materials.

First-Principles Evaluation of the Potential of Borophene as a Monolayer Transparent Conductor

2017 ◽  
Author(s):  
Lyudmyla Adamska ◽  
Sridhar Sadasivam ◽  
Jonathan J. Foley ◽  
Pierre Darancet ◽  
Sahar Sharifzadeh
Keyword(s):  
First Principles ◽  
Density Functional ◽  
State Of The Art ◽  
Transparent Electrode ◽  
Visible Range ◽  
Two Dimensional ◽  
Transparent Conductor ◽  
Many Body ◽  
Functional Theory ◽  
Many Body Perturbation Theory

Two-dimensional boron is promising as a tunable monolayer metal for nano-optoelectronics. We study the optoelectronic properties of two likely allotropes of two-dimensional boron using first-principles density functional theory and many-body perturbation theory. We find that both systems are anisotropic metals, with strong energy- and thickness-dependent optical transparency and a weak (<1%) absorbance in the visible range. Additionally, using state-of-the-art methods for the description of the electron-phonon and electron-electron interactions, we show that the electrical conductivity is limited by electron-phonon interactions. Our results indicate that both structures are suitable as a transparent electrode.

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