Quantum phase transitions in Sn bilayer based interfacial systems by an external strain

2016 ◽  
Vol 18 (35) ◽  
pp. 24350-24355 ◽  
Author(s):  
Li Chen ◽  
Qiandong Zhuang ◽  
Yeqing Chen ◽  
Changmin Shi ◽  
Dongchao Wang
Keyword(s):  
Phase Transitions ◽  
Electronic Structures ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
First Principle ◽  
Interface Polarization ◽  
First Principle Calculations ◽  
First Time ◽  
External Strain

Using first-principle calculations, we report for the first time, the changes in electronic structures of a single bilayer Sn stacked on a single bilayer Sb(Bi) and on a single quintuple layer Sb2Te3 induced by both interface polarization and strain.

Quantum phase transitions in interfacing two gapped systems of ordinary fermions driven by external strain and atomic adsorption

2015 ◽  
Vol 17 (27) ◽  
pp. 18178-18184 ◽  
Author(s):  
Li Chen ◽  
Kai Chang ◽  
X. G. Zheng ◽  
S. H. Ji ◽  
D. C. Wang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Phase Transitions ◽  
First Principles ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
First Principles Calculations ◽  
Interface Polarization ◽  
Atomic Adsorption ◽  
External Strain

We study how the electronic structure of a single bilayer Bi on a single quintuple layer Bi2Se3 (Bi2Te3) changes with interface polarization, strain and H adsorption using first-principles calculations.

scholarly journals Атомная структура и энергия когезии кластеров ZnSe и CdSe

2019 ◽  
Vol 61 (4) ◽  
pp. 786
Author(s):  
Л.И. Овсянникова
Keyword(s):  
Electronic Structures ◽  
Density Functional ◽  
Energy Gap ◽  
First Principle ◽  
External Layer ◽  
Functional Theory ◽  
First Principle Calculations ◽  
The Stability ◽  
First Time ◽  
Gap Width

AbstractThe first-principle calculations of the atomic and electronic structures of fullerene-like Zn_ n Se_ n and Cd_ n Se_ n have been carried out for n = 12, 36, 48, and 60. A model of two-layer fullerene-like (ZnSe)_60 and (CdSe)_60 clusters with mixed sp ^2/ sp ^3 bonds has been built for the first time. Ab initio calculations are performed in terms of the electron density functional and the hybrid B3LYP functional theory. The stability and the energy gap width of the clusters are estimated in the dependence on the number of atoms in a cluster and its geometry. It is shown that the relaxation of 1.7–1.8-nm two-layer (ZnSe)_60 and (CdSe)_60 clusters with mixed sp ^2/ sp ^3 bonds is accompanied by splitting out of the external layer.

Quantum phase transitions

2004 ◽  
Vol 174 (8) ◽  
pp. 853 ◽  
Author(s):  
Sergei M. Stishov
Keyword(s):  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase

scholarly journals Magnetic Field- and Pressure-Induced Quantum Phase Transitions in NH4CuCl3

2005 ◽  
Vol 159 ◽  
pp. 241-245 ◽  
Author(s):  
Masashi Fujisawa ◽  
Budhy Kurniawan ◽  
Toshio Ono ◽  
Hidekazu Tanaka
Keyword(s):  
Magnetic Field ◽  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase

scholarly journals A First-Principle Study of Monolayer Transition Metal Carbon Trichalcogenides

2021 ◽  
Author(s):  
Muhammad Yar Khan ◽  
Yan Liu ◽  
Tao Wang ◽  
Hu Long ◽  
Miaogen Chen ◽  
...  
Keyword(s):  
Phonon Dispersion ◽  
Magnetic Ordering ◽  
Dimensional Structure ◽  
First Principle ◽  
Two Dimensional ◽  
Biaxial Strain ◽  
Half Metallic ◽  
First Principle Calculations ◽  
Potential Applications ◽  
External Strain

AbstractMonolayer MnCX3 metal–carbon trichalcogenides have been investigated by using the first-principle calculations. The compounds show half-metallic ferromagnetic characters. Our results reveal that their electronic and magnetic properties can be altered by applying uniaxial or biaxial strain. By tuning the strength of the external strain, the electronic bandgap and magnetic ordering of the compounds change and result in a phase transition from the half-metallic to the semiconducting phase. Furthermore, the vibrational and thermodynamic stability of the two-dimensional structure has been verified by calculating the phonon dispersion and molecular dynamics. Our study paves guidance for the potential applications of these two mono-layers in the future for spintronics and straintronics devices.

scholarly journals Interaction between Different Kinds of Quantum Phase Transitions

2021 ◽  
Vol 3 (2) ◽  
pp. 253-261
Author(s):  
Angel Ricardo Plastino ◽  
Gustavo Luis Ferri ◽  
Angelo Plastino
Keyword(s):  
Phase Transitions ◽  
Nuclear Physics ◽  
Body Problem ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
Exactly Solvable Models ◽  
Solvable Models ◽  
Many Body ◽  
Pairing Interaction ◽  
Exactly Solvable

We employ two different Lipkin-like, exactly solvable models so as to display features of the competition between different fermion–fermion quantum interactions (at finite temperatures). One of our two interactions mimics the pairing interaction responsible for superconductivity. The other interaction is a monopole one that resembles the so-called quadrupole one, much used in nuclear physics as a residual interaction. The pairing versus monopole effects here observed afford for some interesting insights into the intricacies of the quantum many body problem, in particular with regards to so-called quantum phase transitions (strictly, level crossings).

scholarly journals Entanglement View of Dynamical Quantum Phase Transitions

2021 ◽  
Vol 126 (4) ◽  
Author(s):  
Stefano De Nicola ◽  
Alexios A. Michailidis ◽  
Maksym Serbyn
Keyword(s):  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase
Sign in / Sign up

Export Citation Format

Share Document