Coulomb impurities in graphene driven by fast ions

• URL: http://arxiv.org/abs/2411.13429v1
• Date: Wed, 20 Nov 2024 16:12:05 GMT
• Title: Coulomb impurities in graphene driven by fast ions
• Authors: Saparboy Rakhmanov, Reinhold Egger, Doniyor Jumanazarov, Davron Matrasulov,
• Abstract summary: We provide a theoretical model for electronic transitions in a two-dimensional (2D) artificial atom in a graphene monolayer. We compute the probability and cross sections for the corresponding electronic transitions by means of an exact solution of the time-dependent 2D Dirac equation.
• Score: 0.0
• License:
• Abstract: We provide a theoretical model for electronic transitions in a two-dimensional (2D) artificial atom in a graphene monolayer. The artificial atom is due to the presence of a charged adatom (Coulomb impurity) in the layer and interacts with a fast ultrarelativistic ion moving parallel to the layer. We compute the probability and cross sections for the corresponding electronic transitions by means of an exact solution of the time-dependent 2D Dirac equation describing the interaction of the planar atom with the electromagnetic field of the ultrarelativistic projectile.

Related papers

• Sub-cycle resolved strong field ionization of chiral molecules and the origin of chiral photoelectron asymmetries [0.0]
  We report on strong field ionization of S- and R-propylene oxide in circularly polarized two-color laser fields. Relative helicity of the two single color laser fields affects photoelectron circular dichroism (PECD) PECD is modulated as a function of the sub-cycle release time of the electron.
  arXiv  Detail & Related papers  (2024-02-05T17:25:57Z)
• Quench dynamics in higher-dimensional Holstein models: Insights from Truncated Wigner Approaches [41.94295877935867]
  We study the melting of charge-density waves in a Holstein model after a sudden switch-on of the electronic hopping. A comparison with exact data obtained for a Holstein chain shows that a semiclassical treatment of both the electrons and phonons is required in order to correctly describe the phononic dynamics.
  arXiv  Detail & Related papers  (2023-12-19T16:14:01Z)
• Coulomb impurities in graphene driven by ultrashort electromagnetic pulses: Excitation, ionization, and pair creation [0.0]
  We provide a theory for electronic transitions induced by ultrashort electromagnetic pulses in two-dimensional artificial relativistic atoms. We derive and discuss analytical expressions for the probabilities for excitation, ionization and electron-hole pair creation in this system.
  arXiv  Detail & Related papers  (2023-11-06T11:58:35Z)
• Higher-order topological Peierls insulator in a two-dimensional atom-cavity system [58.720142291102135]
  We show how photon-mediated interactions give rise to a plaquette-ordered bond pattern in the atomic ground state. The pattern opens a non-trivial topological gap in 2D, resulting in a higher-order topological phase hosting corner states. Our work shows how atomic quantum simulators can be harnessed to investigate novel strongly-correlated topological phenomena.
  arXiv  Detail & Related papers  (2023-05-05T10:25:14Z)
• Coulomb-correlated electron number states in a transmission electron microscope beam [0.0]
  Event-based electron spectroscopy allows a spatial and spectral characterization of the electron ensemble emitted by each laser pulse. We identify distinctive energy and momentum correlations arising from acceleration-enhanced interparticle energy exchange. We observe field-controllable electron antibunching, attributed primarily to transverse Coulomb deflection.
  arXiv  Detail & Related papers  (2022-09-25T19:08:09Z)
• Stochastic Variational Approach to Small Atoms and Molecules Coupled to Quantum Field Modes [55.41644538483948]
  We present a variational calculation (SVM) of energies and wave functions of few particle systems coupled to quantum fields in cavity QED. Examples for a two-dimensional trion and confined electrons as well as for the He atom and the Hydrogen molecule are presented.
  arXiv  Detail & Related papers  (2021-08-25T13:40:42Z)
• Relativistic aspects of orbital and magnetic anisotropies in the chemical bonding and structure of lanthanide molecules [60.17174832243075]
  We study the electronic and ro-vibrational states of heavy homonuclear lanthanide Er2 and Tm2 molecules by applying state-of-the-art relativistic methods. We were able to obtain reliable spin-orbit and correlation-induced splittings between the 91 Er2 and 36 Tm2 electronic potentials dissociating to two ground-state atoms.
  arXiv  Detail & Related papers  (2021-07-06T15:34:00Z)
• Molecular Interactions Induced by a Static Electric Field in Quantum Mechanics and Quantum Electrodynamics [68.98428372162448]
  We study the interaction between two neutral atoms or molecules subject to a uniform static electric field. Our focus is to understand the interplay between leading contributions to field-induced electrostatics/polarization and dispersion interactions.
  arXiv  Detail & Related papers  (2021-03-30T14:45:30Z)
• Bound states of an ultracold atom interacting with a set of stationary impurities [0.0]
  We consider two types of atom-impurity interaction: (i) zero-range potential represented by regularized delta, (ii) more realistic polarization potential. For the former we obtain analytical results for energies of bound states. For the latter we perform numerical calculations based on the application of finite element method.
  arXiv  Detail & Related papers  (2020-07-20T17:09:28Z)
• General quantum-mechanical solution for twisted electrons in a uniform magnetic field [68.8204255655161]
  A theory of twisted (and other structured) paraxial electrons in a uniform magnetic field is developed. The observable effect of a different behavior of relativistic Laguerre-Gauss beams with opposite directions of the orbital angular momentum penetrating from the free space into a magnetic field is predicted.
  arXiv  Detail & Related papers  (2020-05-13T16:35:10Z)
• Universal model for electron thermal-field emission from two-dimensional semimetals [3.205614282399206]
  We present the theory of out-of-plane (or vertical) electron thermal-field emission from 2D semimetals. We show that the current-voltage-temperature characteristic is well-captured by a universal scaling relation applicable for broad classes of 2D semimetals.
  arXiv  Detail & Related papers  (2020-03-31T07:50:20Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.