Most of the experiments on the quantum Hall effect (QHE) were made at approximately the same height above sea level. A future international comparison will determine whether the gravitational field g(x) influences the QHE. In the realm of (1+2)-dimensional phenomenological macroscopic electrodynamics, the Ohm-Hall law is metric independent ("topological"). This suggests that it does not couple ...

The static softening behavior of A5083 aluminum alloy with different initial microstructures was studied using various characterization techniques. To calculate the recrystallized fraction, in compression test, a new method based on offset yield stress and Hall–Petch relationship proposed, which is more accurate than conventional methods applicable even when microstructure complex. And relaxati...

Aging and quenching at critical temperatures were applied to a hot-rolled (HR) Fe-24.86Ni-5.8Al-0.38C (mass%) dual-phase alloy obtain B2 precipitates with various volume fractions sizes. Higher yield strength stronger strain hardening achieved in the aged samples compared these for HR sample, corresponding deformation mechanisms carefully revealed. The show hetero-deformation induced that sampl...

We have studied the temperature dependence of the integer quantum Hall transitions in the molecular crystal (TMTSF)2PF6. We find that the transition width between the quantum Hall plateaus does not exhibit the universal power-law scaling behavior of the integer quantum Hall effect observed in semiconducting devices. Instead, the slope of the ρxy risers, dρxy/dB, and the (inverse) width of the ρ...

EDITOR’S NOTE: Attorney Elizabeth J. Hall is an associate with the Lynnfield firm of Godson Legal Group P.C. She is a graduate of New England School of Law and focuses on divorce and custody cases. As always, we encourage the readership to submit articles and decisions of interest for publication. Please forward articles or decisions to Elizabeth J. Hall, Esq., at Godson Legal Group L.L.P. 210 ...

Let G be a nite group and be a set of primes. Put d (G) = k (G)=jGj where k (G) is the number of conjugacy classes of -elements in G and jGj is the -part of the order of G. In this paper we initiate the study of this invariant by showing that if d (G) > 5=8 then G possesses an abelian Hall -subgroup, all Hall -subgroups of G are conjugate, and every -subgroup of G lies in some Hall -subgroup of...

We study the Hall effect in a system of weakly coupled Luttinger Liquid chains, using a Memory function approach to compute the Hall constant in the presence of umklapp scattering along the chains. In this approximation, the Hall constant decomposes into two terms: a high-frequency term and a Memory function term. For the case of zero umklapp scattering, where the Memory function vanishes, the ...

The “Laughlin” picture of the Fractional Quantum Hall effect can be derived using the “exotic” model based on the two-fold centrally-extended planar Galilei group. When coupled to a planar magnetic field of critical strength determined by the extension parameters, the system becomes singular, and “Faddeev-Jackiw” reduction yields the “Chern-Simons” mechanics of Dunne, Jackiw, and Trugenberger. ...

Push-pull tests at fixed plastic strain amplitude or stress were run on a TWIP steel, and followed by TEM observations, to analyze its cyclic behavior in relation with the deformation mechanisms. The kinematic isotropic components of flow measured throughout whole hardening/softening stages, their evolution cumulated was compared those tension. rise internal found responsible for initial harden...

This paper reported the results of research into effect Equal Channel Angular Pressing (ECAP) temperature and 1-h annealing on mechanical properties, stress-relaxation resistance, corrosion resistance austenitic steel AISI 321L with strongly elongated thin δ-ferrite particles in its microstructure. The formation α′-martensite fragmentation austenite grains takes place during ECAP. Ultrafine-gra...