Two alternative descriptions of second order phase transitions are considered, Landau theory and the self-consistent approach. The temperature dependence of the heat capacity in these two descriptions is considered. The Landau theory gives only a jump in the heat capacity. It is not defined by the...
solid-state phase transformationsthermodynamic properties/ A6470K Solid-solid transitionsExperimental evidence is given of a second order transition in the spinel CdIn 2 S 4 . The specific heat c p shows a step at the transition temperature ( T c =403°K), the thermal expansion coefficient α...
Phase transitions can also be continuous, which is the case when the order parameter changes from zero to a nonzero value in a continuous way. Continuous, or second-order, phase transitions can be very spectacular, because we will see that they give rise to a diverging correlation length and...
for theN = 10 resonator, the second-excited level is not significantly populated ifF2 ≪ ∣χ∣κ(see Eq. (21) “Methods”). For theN = 10 device parameters and the driveF/2π ≃ 1.6 MHz considered here, the third level is ...
The theory predicts that ferroelectric materials undergo a second-order phase transition from a paraelectric phase to a ferroelectric phase as the temperature is decreased. This phase transition is characterized by the appearance of a spontaneous polarization, which is the result of a symmetry-breaking...
first-order transitionsThe basic concepts of the Landau theory of phase transitions are introduced through working examples. A number of rules governing the application of the theory to second and first-order transitions are given. The approach to magnetostructural transitions in magnetic mulltiferroic...
For the nonrandom case, the model exhibits a second-order phase transition to a SC state as density of charge carriers is increased. It belongs to the universality class different from that of the 3D XY model. Quenched disorders (impurities) are introduced both in the hopping amplitude and ...
Article 14 December 2022 Topological isoconductance signatures in Majorana nanowires Article Open access 27 August 2021 Long-range phase coherence and tunable second order φ0-Josephson effect in a Dirac semimetal 1T-PtTe2 Article Open access 28 October 2024 Introduction...
This equation describes phenomena including nonlinear waves, second order phase transition and evolution of amplitudes of unstable models. This equation can be used to describe the dynamical processes in continuums with fractal dispersion and the media with fractal mass dimension [1]. In [2], to ...
(i) Disclinations in smectic C are very much like vortex filaments in superfluids or magnetic fluxoids in superconductors. (ii) A uniform distortion of the phase factor lowers the C-A (or A-N) transition point, and at any given temperature there should occur a second order transition ...