نتایج جستجو برای: r hall
تعداد نتایج: 510801 فیلتر نتایج به سال:
We have studied a practical approach for the inclusion of non-isotropic impurities in the systems showing integer quantum Hall effect. We observe that if the impurity distribution in the direction which the electric field applys, then the localized levels goes out from the origin with respect to the isotropic case, and the Hall step will the clearly observed.
Notre Dame women students chose Maureen Lathers, Diane McDonnell, and Janet W altman as fina l candidates fo r a seat on the Student L ife Council in a p rim ary election held yesterday in Badin and Walsh halls. A petition making this seat tem porary also received support in Badin and Walsh last night. This petition w ill come before the SLC at its next meeting. Lathers, Badin hall sophomore, h...
A symmetrically doped double layer electron system with total filling fraction ν = 1/m decouples into two even denominator (ν = 1/2m) composite fermion ‘metals’ when the layer spacing is large. Out-of-phase fluctuations of the statistical gauge fields in this system mediate a singular attractive pairing interaction between composite fermions in different layers. A strong-coupling analysis shows...
unsteady hydromagnetic generalised couette flow of a viscous, incompressible and electrically conducting fluid between two horizontal parallel porous plates darcian channel in the presence of a uniform transverse magnetic field taking hall current and ion-slip into account in a rotating system is investigated. an exact solution of the governing equations is obtained by laplace transform techniq...
Z. Ahmed, D. S. Akerib, S. Arrenberg,* C.N. Bailey, D. Balakishiyeva, L. Baudis, D.A. Bauer, P. L. Brink, T. Bruch, R. Bunker, B. Cabrera, D. O. Caldwell, J. Cooley, E. do Couto e Silva, P. Cushman, M. Daal, F. DeJongh, P. Di Stefano, M. R. Dragowsky, L. Duong, S. Fallows, E. Figueroa-Feliciano, J. Filippini, J. Fox, M. Fritts, S. R. Golwala, J. Hall, R. Hennings-Yeomans, S. A. Hertel, D. Holmg...
Let G = (V,E) be a graph and R ⊆ E. A matching M in G is called R-feasible if the subgraph induced by the M -saturated vertices does not have an edge of R. We show that the general problem of finding a maximum size Rfeasible matching in G is NP-hard and identify several natural applications of this new concept. In particular, we use R-feasible matchings to give a necessary and sufficient condit...
Let R and S be two irreducible root systems spanning the same vector space and having the same Weyl group W , such that S (but not necessarily R) is reduced. For each such pair (R, S) we construct a family of W -invariant orthogonal polynomials in several variables, whose coefficients are rational functions of parameters q, t1, t2, . . . , tr, where r (= 1, 2 or 3) is the number of W -orbits in...
– Using the Chalker-Coddington network model as a drastically simplified, but universal model of integer quantum Hall physics, we investigate the plateau-to-insulator transition at strong magnetic field by means of a real-space renormalization approach. Our results suggest that for a fully quantum coherent situation, both the Hall insulator with diverging Hall resistance RH and the quantized Ha...
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