Zobrazeno 1 - 10
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pro vyhledávání: '"Groth, C. P."'
Akademický článek
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Publikováno v:
SciPost Phys. 7, 031 (2019)
The self-consistent quantum-electrostatic (also known as Poisson-Schr\"odinger) problem is notoriously difficult in situations where the density of states varies rapidly with energy. At low temperatures, these fluctuations make the problem highly non
Externí odkaz:
http://arxiv.org/abs/1905.01271
Publikováno v:
SciPost Phys. 4, 026 (2018)
We propose a robust and efficient algorithm for computing bound states of infinite tight-binding systems that are made up of a finite scattering region connected to semi-infinite leads. Our method uses wave matching in close analogy to the approaches
Externí odkaz:
http://arxiv.org/abs/1711.08250
Publikováno v:
Phys. Rev. E 85, 021138 (2012)
Recent experiments on the propagation of light over a distance L through a random packing of spheres with a power law distribution of radii (a socalled L\'evy glass) have found that the transmission probability T \propto 1/L^{\gamma} scales superdiff
Externí odkaz:
http://arxiv.org/abs/1105.4149
Publikováno v:
Phys. Rev. Lett. 103, 196805 (2009)
We present an effective medium theory that explains the disorder-induced transition into a phase of quantized conductance, discovered in computer simulations of HgTe quantum wells. It is the combination of a random potential and quadratic corrections
Externí odkaz:
http://arxiv.org/abs/0908.0881
Publikováno v:
Phys. Rev. B 80, 195320 (2009)
We show how the quantum Hall effect in an inverted-gap semiconductor (with electron- and hole-like states at the conduction- and valence-band edges interchanged) can be used to inject, precess, and detect the electron spin along a one-dimensional pat
Externí odkaz:
http://arxiv.org/abs/0906.2357
Publikováno v:
Phys. Rev. B 79, 024204 (2009)
The recent realization of a "Levy glass" (a three-dimensional optical material with a Levy distribution of scattering lengths) has motivated us to analyze its one-dimensional analogue: A linear chain of barriers with independent spacings s that are L
Externí odkaz:
http://arxiv.org/abs/0811.0297
Publikováno v:
Phys. Rev. B 78, 235438 (2008)
We adapt a finite difference method of solution of the two-dimensional massless Dirac equation, developed in the context of lattice gauge theory, to the calculation of electrical conduction in a graphene sheet or on the surface of a topological insul
Externí odkaz:
http://arxiv.org/abs/0810.4787
Publikováno v:
Phys.Rev.Lett. 100, 176804 (2008)
By solving a master equation in the Sierpinski lattice and in a planar random-resistor network, we determine the scaling with size L of the shot noise power P due to elastic scattering in a fractal conductor. We find a power-law scaling P ~ L^(d_f-2-
Externí odkaz:
http://arxiv.org/abs/0803.2709
Publikováno v:
AIP Conference Proceedings; 2024, Vol. 2996 Issue 1, p1-12, 12p
