scholarly journals Local temperature of out-of-equilibrium quantum electron systems

2014 ◽  
Vol 90 (3) ◽  
Author(s):  
J. Meair ◽  
J. P. Bergfield ◽  
C. A. Stafford ◽  
Ph. Jacquod
Keyword(s):  
Local Temperature ◽  
Electron Systems ◽  
Quantum Electron

scholarly journals Dynamics of energy transport and entropy production in ac-driven quantum electron systems

2016 ◽  
Vol 94 (3) ◽  
Author(s):  
María Florencia Ludovico ◽  
Michael Moskalets ◽  
David Sánchez ◽  
Liliana Arrachea
Keyword(s):  
Entropy Production ◽  
Energy Transport ◽  
Electron Systems ◽  
Quantum Electron

Quantum electron liquid and its possible phase transition

2021 ◽  
Author(s):  
Sunghun Kim ◽  
Joonho Bang ◽  
Chan-young Lim ◽  
Seung Yong Lee ◽  
Jounghoon Hyun ◽  
...  
Keyword(s):  
Fermi Liquid ◽  
Degrees Of Freedom ◽  
Liquid Crystalline ◽  
Electron Interaction ◽  
High Electron ◽  
Electron Systems ◽  
Atomic Orbitals ◽  
Quantum Electron ◽  
Dependent Measurement ◽  
Band Deformation

Abstract Pure quantum electrons render intriguing correlated electronic phases by virtue of quantum fluctuations in addition to an exclusive electron-electron interaction. To realise such quantum electron systems, a key ingredient is dense electrons decoupled from other degrees of freedom. Here, we report the discovery of a pure quantum electron liquid, which spreads up to ~ 3 Å in the vacuum on the surface of electride crystal. An extremely high electron density and its scant hybridization with underneath atomic orbitals evidence quantum and pure nature of electrons, exhibiting polarized liquid phase demonstrated by spin-dependent measurement. Further, upon reducing the density, the dynamics of quantum electrons drastically changes to that of non-Fermi liquid along with an anomalous band deformation, manifesting a possible transition to a hexatic liquid crystalline phase. Our findings cultivate the frontier of quantum electron systems, which serve as an ideal platform for exploring the correlated electronic phases in a pure manner.

scholarly journals Recent Developments in the Field of the Metal-Insulator Transition in Two Dimensions

2019 ◽  
Author(s):  
Alexander Shashkin ◽  
Sergey Kravchenko
Keyword(s):  
Two Dimensions ◽  
Insulator Transition ◽  
Strongly Correlated ◽  
Electron Systems ◽  
Dimensional Electron ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Quantum Electron ◽  
Recent Developments ◽  
Silicon Based

We review the latest developments in the field of the metal-insulator transition in strongly-correlated two-dimensional electron systems. Particular attention is given to recent discoveries of a sliding quantum electron solid and interaction-induced spectrum flattening at the Fermi level in high-quality silicon-based structures.

scholarly journals How to Calculate Condensed Matter Electronic Structure Based on Multi-Electron Atom Semi-Classical Model

2021 ◽  
Vol 6 (4) ◽  
pp. 46
Author(s):  
Levan Chkhartishvili
Keyword(s):  
Electronic Structure ◽  
Condensed Matter ◽  
Classical Model ◽  
Preliminary Test ◽  
Electron Energy Spectrum ◽  
Electronic Systems ◽  
Electron Systems ◽  
Atomic Orbitals ◽  
Quantum Electron ◽  
The Matrix

Atoms are proved to be semi-classical electronic systems in the sense of closeness of their exact quantum electron energy spectrum with that calculated within semi-classical approximation. Introduced semi-classical model of atom represents the wave functions of bounded in atom electrons in form of hydrogen-like atomic orbitals with explicitly defined effective charge numbers. The hydrogen-like electron orbitals of constituting condensed matter atoms are used to calculate the matrix elements of the secular equation determining the condensed matter electronic structure in the linear-combination-of-atomic-orbitals (LCAO) approach. Preliminary test calculations are conducted for boron B atom and diboron B2 molecule electron systems. 

scholarly journals Recent Developments in the Field of the Metal-Insulator Transition in Two Dimensions

2019 ◽  
Vol 9 (6) ◽  
pp. 1169 ◽  
Author(s):  
Alexander Shashkin ◽  
Sergey Kravchenko
Keyword(s):  
Two Dimensions ◽  
Insulator Transition ◽  
Strongly Correlated ◽  
Electron Systems ◽  
Dimensional Electron ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Quantum Electron ◽  
Recent Developments ◽  
Silicon Based

We review the latest developments in the field of the metal-insulator transition in strongly-correlated two-dimensional electron systems. Particular attention is given to recent discoveries of a sliding quantum electron solid and interaction-induced spectrum flattening at the Fermi level in high-quality silicon-based structures.

scholarly journals Emergence of Fourier’s Law of Heat Transport in Quantum Electron Systems

ACS Nano ◽  
2018 ◽  
Vol 12 (5) ◽  
pp. 4304-4311 ◽  
Author(s):  
Sosuke Inui ◽  
Charles A. Stafford ◽  
Justin P. Bergfield
Keyword(s):  
Heat Transport ◽  
Electron Systems ◽  
Fourier’S Law ◽  
Quantum Electron ◽  
Fourier's Law

Pathway Complexity in the Stacking of Imine-linked Macrocycles Related to Two-Dimensional Covalent Organic Frameworks

2019 ◽  
Author(s):  
Shiwei Wang ◽  
Anton Chavez ◽  
Simil Thomas ◽  
Hong Li ◽  
Nathan C. Flanders ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Structural Similarity ◽  
Discrete Models ◽  
Side Chains ◽  
Two Dimensional ◽  
Assembly Process ◽  
Covalent Organic Frameworks ◽  
Electron Systems ◽  
Monomer Structure ◽  
Kinetic Traps

This work reports on the assembly of imine-linked macrocycles that serve as models of two-dimensional covalent organic frameworks (2D COFs). Interlayer interactions play an important role in the formation of 2D COFs, yet the effect of monomer structure on COF formation, crystallinity, and susceptibility to exfoliation are not well understood. For example, monomers with both electron-rich and electron-poor π-electron systems have been proposed to strengthen interlayer inter-actions and improve crystallinity. Here we probe these effects by studying the stacking behavior of imine-linked macrocycles that represent discrete models of 2D COFs. <div><br></div><div>Specifically, macrocycles based on terephthaldehyde (PDA) or 2,5-dimethoxyterephthaldehyde (DMPDA) stack upon cooling molecularly dissolved solutions. Both macrocycles assemble cooperatively with similar ΔHe values of -97 kJ/mol and -101 kJ/mol, respectively, although the DMPDA macrocycle assembly process showed a more straightforward temperature dependence. Circular dichroism spectroscopy performed on macrocycles bearing chiral side chains revealed a helix reversion process for the PDA macrocycles that was not observed for the DMPDA macrocycles. <br></div><div><br></div><div>Given the structural similarity of these monomers, these findings demonstrate that the stacking processes associated with nanotubes derived from these macrocycles, as well as for the corresponding COFs, are complex and susceptible to kinetic traps, casting doubt on the relevance of thermodynamic arguments for improving materials quality. <br></div>

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