Results 31 to 40 of about 9,597,779 (345)

Phase transitions in copper tellurides

open access: yesEurasian Journal of Physics and Functional Materials, 2023
This paper presents the results of model calculations of the structure of the Cu-Te system at low temperatures, as well as the results of a study of the structure and phase transitions of synthesized non-stoichiometric compounds of copper tellurides. For
N.N. Bikkulova   +5 more
doaj   +1 more source

Phases and phase transitions in disordered quantum systems [PDF]

open access: yes, 2013
These lecture notes give a pedagogical introduction to phase transitions in disordered quantum systems and to the exotic Griffiths phases induced in their vicinity. We first review some fundamental concepts in the physics of phase transitions.
Vojta, Thomas
core   +3 more sources

Sculpting tissues by phase transitions

open access: yesNature Communications, 2022
Many biological processes require changes in the physical properties of cells and their surroundings. Here, Lenne and Trivedi discuss recent findings in biological systems in terms of phase transitions in inert physical systems from both theoretical and ...
Pierre-François Lenne, Vikas Trivedi
doaj   +1 more source

Ferromagnetic phase transitions in SU(N)

open access: yesNuclear Physics B, 2023
We study the thermodynamics of a non-abelian ferromagnet consisting of “atoms” each carrying a fundamental representation of SU(N), coupled with long-range two-body quadratic interactions.
Alexios P. Polychronakos   +1 more
doaj   +1 more source

Quantum Phase Transitions

open access: yes, 2001
We give a general introduction to quantum phase transitions in strongly-correlated electron systems. These transitions which occur at zero temperature when a non-thermal parameter $g$ like pressure, chemical composition or magnetic field is tuned to a ...
Doniach S.   +4 more
core   +2 more sources

Anomalous correlation-induced dynamical phase transitions

open access: yesScientific Reports, 2023
The nonanalyticity of the Loschmidt echo at critical times in quantum quenched systems is termed as the dynamical quantum phase transition, extending the notion of quantum criticality to a nonequilibrium scenario.
Niaz Ali Khan   +3 more
doaj   +1 more source

Geometrical Phase Transitions

open access: yes, 2004
The geometrical approach to phase transitions is illustrated by simulating the high-temperature representation of the Ising model on a square lattice.Comment: 5 pages, 3 figures, talk presented at Conference on Computational Physics 2004, Genoa, 1-4 ...
Adriaan M.J. Schakel   +9 more
core   +3 more sources

Instanton expansions and phase transitions

open access: yesJournal of High Energy Physics, 2022
A central object in any axionic theory is its periodic potential, which is typically generated by instantons. The goal of this paper is to understand what physically happens to the theory when we lose control of the potential’s instanton expansion.
John Stout
doaj   +1 more source

First-Principles Study on the CO2 Reduction Reaction (CO2RR) Performance of h-BN-Based Single-Atom Catalysts Modified with Transition Metals

open access: yesNanomaterials
The reasonable design of low-cost, high-activity single-atom catalysts (SACs) is crucial for achieving highly efficient electrochemical CO2RR. In this study, we systematically explore, using density functional theory (DFT), the performance of transition ...
Xiansheng Yu   +7 more
doaj   +1 more source

Surgical phase recognition by learning phase transitions

open access: yesCurrent Directions in Biomedical Engineering, 2020
Automatic recognition of surgical phases is an important component for developing an intra-operative context-aware system. Prior work in this area focuses on recognizing short-term tool usage patterns within surgical phases.
Sahu Manish   +3 more
doaj   +1 more source

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