Subatomic movements of a domain wall in the Peierls potential

  title={Subatomic movements of a domain wall in the Peierls potential},
  author={Kostya S. Novoselov and Andre K. Geim and Sergey. V. Dubonos and Ernie W. Hill and Irina V. Grigorieva},
The discrete nature of crystal lattices plays a role in virtually every material property. But it is only when the size of entities hosted by a crystal becomes comparable to the lattice period—as occurs for dislocations, vortices in superconductors and domain walls—that this discreteness is manifest explicitly. The associated phenomena are usually described in terms of a background Peierls ‘atomic washboard’ energy potential, which was first introduced for the case of dislocation motion in the… 

Ferroelectric domain wall dynamics characterized with X-ray photon correlation spectroscopy

This work introduces X-ray photon correlation spectroscopy (XPCS) as a powerful tool for investigating heterogeneous dynamics of interfaces and shows how to distinguish the dynamics related to the passing of domain walls through the periodic (Peierls) potential of the crystal lattice and through the random potential caused by lattice defects (pinning centers).

Motion of domain walls and the dynamics of kinks in the magnetic Peierls potential.

It is predicted that, despite the discreteness of the system, kinks can behave like sine-Gordon solitons in thin films of materials such as yttrium iron garnets, and general conditions for other materials are derived.

Atomic antiferromagnetic domain wall propagation beyond the relativistic limit

We theoretically investigate the dynamics of atomic domain walls (DWs) in antiferromagnets driven by a spin-orbit field. For a DW with a width of a few lattice constants, we identify a Peierls-like

Hall micromagnetometry of individual two-dimensional ferromagnets

The recent advent of atomically-thin ferromagnetic crystals has allowed experimental studies of two-dimensional (2D) magnetism that not only exhibits novel behavior due to the reduced dimensionality

Individual Barkhausen Pulses of Ferroelastic Nanodomains.

This work follows and visualize in real time the motion of single 90° needle domains induced by an electric field applied in the polarization direction of the prototypical ferroelectric BaTiO_{3}, inside a transmission electron microscope, leading to distinctive interactions between domains forming a herringbone pattern.

Electronic structure and magnetic properties of few-layer Cr2Ge2Te6: the key role of nonlocal electron–electron interaction effects

Atomically-thin magnetic crystals have been recently isolated experimentally, greatly expanding the family of two-dimensional materials. In this Article we present an extensive comparative analysis

Micromagnetometry of two-dimensional ferromagnets

The study of atomically thin ferromagnetic crystals has led to the discovery of unusual magnetic behaviour and provided insight into the magnetic properties of bulk materials. However, the

Simulation of the SP-STM induced magnetization switching of nanowires and nanoislands

Kryder’s law predicts a doubling of the capacity of commodity hard drive devices every 13 months. However, the capacity did not increase as expected in the past three years. Perhaps today’s hard

Peierls “Washboard” Controls Dynamics of the Domain Walls in Molecular Ferrimagnets

The magnetization dynamics of metal-organic crystals has been studied in low frequency AC magnetic field. Four modes of domain wall motion (Debye relaxation, creep, slide and over - barrier motion

Minimal radius of magnetic skyrmions: statics and dynamics

In a broad range of applied magnetic fields and material parameters isolated magnetic skyrmions condense into skyrmion lattices. While the geometry of isolated skyrmions and their lattice



Dislocations in a simple cubic lattice

The properties of dislocations are calculated by an approximate method due to Peierls. The width of a dislocation is small, displacements comparable with the interatomic distance being confined to a

Phase transitions in individual sub-micrometre superconductors

The properties of a superconductor are expected to change radically when its size becomes comparable to that of the Cooper pairs, the quasiparticles responsible for superconductivity. The effect of

Devil's staircase and order without periodicity in classical condensed matter

The existence of incommensurate structures proves that crystal ordering is not always the most stable one for nonquantum matter. Some properties of structures which are obtained by minimizing a free

Spin Configuration and Intrinsic Coercive Field of Narrow Domain Walls in Co5R‐Compounds

In ferromagnetic materials with large anisotropy constants (K1 > 108 erg/cm3) the domain wall width, δB, is of the order of magnitude of a few lattice constants (10 to 30 A). The spin configuration

Calculation of intrinsic coercivity of magnetic domain walls in perfect crystals

The critical field strength at which a classical domain wall moves through a perfect ferromagnetic crystal of simplified structure is calculated as a function of the ratio between anisotropy energy K

Lock-in oscillations in magnetic hysteresis curves of YBa2Cu3O7-x single crystals.

The oscillations are found to be periodic in H-1/2a and are induced by a succession of transitions between states for which the vortex lattice is commensurate with the crystal lattice periodicity in the direction perpendicular to the CuO2 planes.

A theory of intrinsic coercivity in narrow magnetic domain wall materials

A theory for intrinsic coercivity in a narrow magnetic domain wall material is proposed. Results from non-linear mathematics are used to represent magnetic domain walls as solitary-wave or soliton