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Normal and Anomalous Diffusion in Soft Lorentz Gases

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Normal and Anomalous Diffusion in Soft Lorentz Gases. / Klages, Rainer; Gallegos, Sol Selene Gil; Solanpää, Janne; Sarvilahti, Mika; Räsänen, Esa.

In: Physical Review Letters, Vol. 122, No. 6, 064102, 14.02.2019.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Klages, R, Gallegos, SSG, Solanpää, J, Sarvilahti, M & Räsänen, E 2019, 'Normal and Anomalous Diffusion in Soft Lorentz Gases', Physical Review Letters, vol. 122, no. 6, 064102. https://doi.org/10.1103/PhysRevLett.122.064102

APA

Klages, R., Gallegos, S. S. G., Solanpää, J., Sarvilahti, M., & Räsänen, E. (2019). Normal and Anomalous Diffusion in Soft Lorentz Gases. Physical Review Letters, 122(6), [064102]. https://doi.org/10.1103/PhysRevLett.122.064102

Vancouver

Klages R, Gallegos SSG, Solanpää J, Sarvilahti M, Räsänen E. Normal and Anomalous Diffusion in Soft Lorentz Gases. Physical Review Letters. 2019 Feb 14;122(6). 064102. https://doi.org/10.1103/PhysRevLett.122.064102

Author

Klages, Rainer ; Gallegos, Sol Selene Gil ; Solanpää, Janne ; Sarvilahti, Mika ; Räsänen, Esa. / Normal and Anomalous Diffusion in Soft Lorentz Gases. In: Physical Review Letters. 2019 ; Vol. 122, No. 6.

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@article{b098640bd95a4119bde5e7c6d8fd4ed1,
title = "Normal and Anomalous Diffusion in Soft Lorentz Gases",
abstract = "Motivated by electronic transport in graphenelike structures, we study the diffusion of a classical point particle in Fermi potentials situated on a triangular lattice. We call this system a soft Lorentz gas, as the hard disks in the conventional periodic Lorentz gas are replaced by soft repulsive scatterers. A thorough computational analysis yields both normal and anomalous (super)diffusion with an extreme sensitivity on model parameters. This is due to an intricate interplay between trapped and ballistic periodic orbits, whose existence is characterized by tonguelike structures in parameter space. These results hold even for small softness, showing that diffusion in the paradigmatic hard Lorentz gas is not robust for realistic potentials, where we find an entirely different type of diffusion.",
author = "Rainer Klages and Gallegos, {Sol Selene Gil} and Janne Solanp{\"a}{\"a} and Mika Sarvilahti and Esa R{\"a}s{\"a}nen",
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language = "English",
volume = "122",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
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RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Normal and Anomalous Diffusion in Soft Lorentz Gases

AU - Klages, Rainer

AU - Gallegos, Sol Selene Gil

AU - Solanpää, Janne

AU - Sarvilahti, Mika

AU - Räsänen, Esa

N1 - INT=phys,"Sarvilahti, Mika"

PY - 2019/2/14

Y1 - 2019/2/14

N2 - Motivated by electronic transport in graphenelike structures, we study the diffusion of a classical point particle in Fermi potentials situated on a triangular lattice. We call this system a soft Lorentz gas, as the hard disks in the conventional periodic Lorentz gas are replaced by soft repulsive scatterers. A thorough computational analysis yields both normal and anomalous (super)diffusion with an extreme sensitivity on model parameters. This is due to an intricate interplay between trapped and ballistic periodic orbits, whose existence is characterized by tonguelike structures in parameter space. These results hold even for small softness, showing that diffusion in the paradigmatic hard Lorentz gas is not robust for realistic potentials, where we find an entirely different type of diffusion.

AB - Motivated by electronic transport in graphenelike structures, we study the diffusion of a classical point particle in Fermi potentials situated on a triangular lattice. We call this system a soft Lorentz gas, as the hard disks in the conventional periodic Lorentz gas are replaced by soft repulsive scatterers. A thorough computational analysis yields both normal and anomalous (super)diffusion with an extreme sensitivity on model parameters. This is due to an intricate interplay between trapped and ballistic periodic orbits, whose existence is characterized by tonguelike structures in parameter space. These results hold even for small softness, showing that diffusion in the paradigmatic hard Lorentz gas is not robust for realistic potentials, where we find an entirely different type of diffusion.

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U2 - 10.1103/PhysRevLett.122.064102

DO - 10.1103/PhysRevLett.122.064102

M3 - Article

VL - 122

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 6

M1 - 064102

ER -