Ads
related to: landau levels in graphene spray adhesive sheets list
Search results
Results From The WOW.Com Content Network
The effects of Landau levels may only be observed when the mean thermal energy kT is smaller than the energy level separation, , meaning low temperatures and strong magnetic fields. Each Landau level is degenerate because of the second quantum number k y {\displaystyle k_{y}} , which can take the values k y = 2 π N L y , {\displaystyle k_{y ...
English: Landau levels in graphene appear at energies proportional to √N, in contrast to the standard sequence that goes as N+½. After Geim and Novoselov arXiv:cond-mat/0702595 After Geim and Novoselov arXiv:cond-mat/0702595
Graphene's Hall conductivity is = (+ /) /, where N is the Landau level and the double valley and double spin degeneracies give the factor of 4. [2] These anomalies are present not only at extremely low temperatures but also at room temperature, i.e. at roughly 20 °C (293 K).
The graphene sheet thus displays a semimetallic (or zero-gap semiconductor) character. Two of the six Dirac points are independent, while the rest are equivalent by symmetry. In the vicinity of the K-points the energy depends linearly on the wave vector, similar to a relativistic particle.
In order to get the number of occupied Landau levels, one defines the so-called filling factor as the ratio between the density of states in a 2DEG and the density of states in the Landau levels. = = In general the filling factor is not an integer. It happens to be an integer when there is an exact number of filled Landau levels.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
The country's top doctor wants a new warning added to alcohol that would alert drinkers about links to cancer, but don't expect cigarette-style warning labels any time soon. U.S. Surgeon General ...
Landau damping; Landau distribution; Landau kinetic equation; Landau levels; Landau theory; Landau–Levich problem; Landau–Lifshitz model; Landau–Lifshitz–Gilbert equation; Landau–Placzek ratio; Landau–Pomeranchuk–Migdal effect; Landau–Squire jet; Landau–Yang theorem; Landau–Zener formula; Lev Landau; List of things named ...