Evidence for moving breathers in a layered crystal insulator at 300 K

Russell, F.M.; Eilbeck, J. C.

doi:10.1209/0295-5075/78/10004

Cited by 102 publications

(98 citation statements)

References 25 publications

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“…Another interesting effect probably related with the existence of fast travelling localized perturbations was reported in Ref. [3]: experiments show that an alpha particle hitting one boundary of a muscovite layer provokes the ejection of an atom at the other side of the layer, several millimeters far from the excitation.…”

Section: Introductionmentioning

confidence: 80%

Supersonic Kinks in Coulomb Lattices

Archilla

Kosevich

Jiménez

et al. 2013

Nonlinear Systems and Complexity

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Summary. There exist in nature examples of lattices of elements for which the interaction is repulsive, the elements are kept in place because different reasons, as border conditions, geometry (e.g., circular) and, certainly, the interaction with other elements in the system, which provides an external potential. A primer example are layered silicates as mica muscovite, where the potassium ions form a two dimensional lattice between silicate layers. We propose an extremely simplified model of this layer in order to isolate the properties of a repulsive lattice and study them. We find that they are extremely well suited for the propagation of supersonic kinks and multikinks. Theoretically, they may have as much energy and travel as fast as desired. This striking results suggest that the properties of repulsive lattices may be related with some yet not fully explained direct and indirect observations of lattice excitations in muscovite.

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Section: Introductionmentioning

confidence: 80%

Supersonic Kinks in Coulomb Lattices

Archilla

Kosevich

Jiménez

et al. 2013

Nonlinear Systems and Complexity

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“…More likely, such lines have to be produced as some kind of an anharmonic excitation traveling along the lattice without dispersion [15,16] in the form of a nonlinear quasi-one-dimensional excitation or quodon, a name originally proposed in [17]. The experimental confirmation of the existence of quodons was obtained by launching an alpha particle against a mica specimen and detecting the ejection of an atom a few millimeters apart at the opposite boundary, at angles corresponding to the lattice main directions [18].…”

Section: Introductionmentioning

confidence: 99%

Moving Excitations in Cation Lattices

et al. 2013

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We consider a model made out of identical particles that repel each other with the Coulomb interaction. We study numerically and analytically the existence and properties of supersonic kinks, showing that they are very easy to be produced and propagate long distances. They have a wide range of velocities and energies. We are motivated by a special characteristic of the muscovite mica mineral. Tracks from particles such as muons can be distinguished in a complex decoration, but the only explanation to most of the tracks is localized excitations called quodons. They move in the cation lattice, sandwiched between the silicate layers, along the lattice directions. Quodons have also been observed experimentally [EPL 78 (2007)

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“…[45]). The irradiation produces in mica very long black tracks parallel to the crystallographic planes and localized between the layers.…”

Section: Discussionmentioning

confidence: 99%

“…These tracks are explained in Ref. [45] by creation in the recoil process of discrete breathers which propagate on long distance along the crystallographic directions. The layered structure on atomic scale plays a crucial role in the observed phenomena.…”

Section: Discussionmentioning

confidence: 99%

Discrete breathers above phonon spectrum

Hizhnyakov¹,

Shelkan²,

Haas³

et al. 2016

LoM

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It is shown that in some metals (Ni, Nb, Fe, Cu) may exist discrete breathers with frequencies above the top of the phonon spectrum. These excitations are mobile: they may propagate along the crystallographic directions transferring energy of > 1 eV over large distances. The discrete breathers with the frequencies above the top of the phonon bands may also exist in covalent crystals (diamond, Si and Ge). It is also found that in monatomic chains and planes (e.g. in graphene), the transverse discrete breathers may be excited above the spectrum of corresponding phonons. Although these vibrations are in resonance with longitudinal (chain) or in-plane (graphene) phonons the lifetime of them may be very long.

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Evidence for moving breathers in a layered crystal insulator at 300 K

Cited by 102 publications

References 25 publications

Supersonic Kinks in Coulomb Lattices

Supersonic Kinks in Coulomb Lattices

Moving Excitations in Cation Lattices

Discrete breathers above phonon spectrum

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