S. Bustingorry
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View article: Deterministic roughening in the dc-driven precessional regime of domain walls
Deterministic roughening in the dc-driven precessional regime of domain walls Open
We numerically study the dynamics of extended domain walls in homogeneous ferromagnets driven by a uniform magnetic field at zero temperature. Using both micromagnetic Landau-Lifshitz-Gilbert simulations and a collective-coordinate model, …
View article: Internal structure dependent creep motion of domain walls driven by spin-transfer torques
Internal structure dependent creep motion of domain walls driven by spin-transfer torques Open
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View article: Continuum of metastable helical states of monoaxial chiral magnets: Effect of boundary conditions
Continuum of metastable helical states of monoaxial chiral magnets: Effect of boundary conditions Open
In a recent publication, we showed that a monoaxial chiral magnet has a continuum of metastable helical states differing by the helix wave number. This intriguing result was obtained for the case of an infinite magnet (or a magnet with per…
View article: Domain-wall Magnetic-texture dependent Creep Motion driven by Spin-transfer Torques
Domain-wall Magnetic-texture dependent Creep Motion driven by Spin-transfer Torques Open
We explore the contributions of adiabatic and non-adiabatic spin-transfer torques (STT) of a spin-polarized current to the thermally activated creep motion of domain-walls in a thin (Ga,Mn)(As,P) film with perpendicular anisotropy. For a d…
View article: Continuum of Metastable Helical States in Monoaxial Chiral Magnets: Effect of the Boundary Conditions
Continuum of Metastable Helical States in Monoaxial Chiral Magnets: Effect of the Boundary Conditions Open
In a recent publication we showed that a monoaxial chiral magnet has a continuum of metastable helical states differing by the helix wave number. This intringuing result was obtained for the case of an infinite magnet (or of a magnet with …
View article: Continuum of metastable conical states of monoaxial chiral helimagnets
Continuum of metastable conical states of monoaxial chiral helimagnets Open
At low temperature and zero applied magnetic field, besides the equilibrium helical state, monoaxial chiral helimagnets have a continuum of helical states differing by the wave number of the modulation. The wave number of these states in u…
View article: Response of the chiral soliton lattice to spin-polarized currents
Response of the chiral soliton lattice to spin-polarized currents Open
Spin-polarized currents originate a spin-transfer torque that enables the manipulation of magnetic textures. Here we theoretically study the effect of a spin-polarized current on the magnetic texture corresponding to a chiral soliton latti…
View article: Creation of single chiral soliton states in monoaxial helimagnets
Creation of single chiral soliton states in monoaxial helimagnets Open
In monoaxial helimagnets, the Dzyaloshinskii–Moriya interaction favors inhomogeneous distributions of the magnetization with chiral modulations of solitonic character. In addition to the helical magnetic state at zero field, a chiral solit…
View article: Field-dependent roughness of moving domain walls in a Pt/Co/Pt magnetic thin film
Field-dependent roughness of moving domain walls in a Pt/Co/Pt magnetic thin film Open
The creep motion of domain walls driven by external fields in magnetic thin films is described by universal features related to the underlying depinning transition. One key parameter in this description is the roughness exponent characteri…
View article: Universal critical exponents of the magnetic domain wall depinning transition
Universal critical exponents of the magnetic domain wall depinning transition Open
Magnetic field driven domain wall dynamics in a ferrimagnetic GdFeCo thin film with perpendicular magnetic anisotropy is studied using low temperature magneto-optical Kerr microscopy. Measurements performed in a practically athermal condit…
View article: Domain-wall roughness in GdFeCo thin films: Crossover length scales and roughness exponents
Domain-wall roughness in GdFeCo thin films: Crossover length scales and roughness exponents Open
Domain-wall dynamics and spatial fluctuations are closely related to each\nother and to universal features of disordered systems. Experimentally measured\nroughness exponents characterizing spatial fluctuations have been reported for\nmagn…
View article: Field-dependent roughness of moving domain walls in a Pt/Co/Pt magnetic\n thin film
Field-dependent roughness of moving domain walls in a Pt/Co/Pt magnetic\n thin film Open
The creep motion of domain walls driven by external fields in magnetic thin\nfilms is described by universal features related to the underlying depinning\ntransition. One key parameter in this description is the roughness exponent\ncharact…
View article: A numerical study of the statistics of roughness parameters for fluctuating interfaces
A numerical study of the statistics of roughness parameters for fluctuating interfaces Open
Self-affine rough interfaces are ubiquitous in experimental systems, and display characteristic scaling properties as a signature of the nature of disorder in their supporting medium, i.e. of the statistical features of its heterogeneities…
View article: Dynamics of chiral solitons driven by polarized currents in monoaxial helimagnets
Dynamics of chiral solitons driven by polarized currents in monoaxial helimagnets Open
Chiral solitons are one dimensional localized magnetic structures that are metastable in some ferromagnetic systems with Dzyaloshinskii–Moriya interactions and/or uniaxial magnetic anisotropy. Though topological textures in general provide…
View article: Dynamics of chiral solitons driven by polarized currents in monoaxial\n helimagnets
Dynamics of chiral solitons driven by polarized currents in monoaxial\n helimagnets Open
Chiral solitons are one dimensional localized magnetic structures that are\nmetastable in some ferromagnetic systems with Dzyaloshinskii-Moriya\ninteractions and/or uniaxial magnetic anisotropy. Though topological textures\nin general prov…
View article: Statistically meaningful measure of domain-wall roughness in magnetic thin films
Statistically meaningful measure of domain-wall roughness in magnetic thin films Open
Domain walls in magnetic thin films display a complex dynamical response when subject to an external drive. It is claimed that different dynamic regimes are correlated with the domain-wall roughness, i.e., with the fluctuations of domain-w…
View article: Ginzburg-Landau micromagnetic model to study domain wall dynamics in thin ferromagnetic systems
Ginzburg-Landau micromagnetic model to study domain wall dynamics in thin ferromagnetic systems Open
Fully understanding domain wall motion in ferromagnetic systems is considered to be essential for the design of new magneto-electronic devices. Along with experiments, numerical simulations are therefore a key to gaining insight into the u…
View article: WOMEN IN PHYSICS IN ARGENTINA: A COMPARATIVE STATISTICAL ANALYSIS
WOMEN IN PHYSICS IN ARGENTINA: A COMPARATIVE STATISTICAL ANALYSIS Open
Urged by the need of detailed information concerning the current situation of women in Physics in Argentina, we performed a statistical study focused on the Physics discipline within the hierarchical structure of researchers with permanent…
View article: Transient magnetic-domain-wall ac dynamics by means of magneto-optical Kerr effect microscopy
Transient magnetic-domain-wall ac dynamics by means of magneto-optical Kerr effect microscopy Open
The domain wall response under constant external magnetic fields reveals a complex behavior where sample disorder plays a key role. Furthermore, the response to alternating magnetic fields has only been explored in limited cases and analyz…
View article: Universal dimensional crossover of domain wall dynamics in ferromagnetic films
Universal dimensional crossover of domain wall dynamics in ferromagnetic films Open
The magnetic domain wall motion driven by a magnetic field is studied in\n(Ga,Mn)As and (Ga,Mn)(As,P) films of different thicknesses. In the thermally\nactivated creep regime, a kink in the velocity curves and a jump of the\nroughness expo…
View article: Statistics of roughness for fluctuating interfaces: A survey of different scaling analyses
Statistics of roughness for fluctuating interfaces: A survey of different scaling analyses Open
Ferroic domain walls are known to display the characteristic scaling properties of self-affine rough interfaces. Different methods have been used to extract roughness information in ferroelectric and ferromagnetic materials. Here, we revie…
View article: Statistics of domain wall roughness: A survey of different scaling analyses
Statistics of domain wall roughness: A survey of different scaling analyses Open
Ferroic domain walls are known to display the characteristic scaling properties of self-affine rough interfaces. Different methods have been used to extract roughness information in ferroelectric and ferromagnetic materials. Here, we revie…
View article: Intermittent collective dynamics of domain walls in the creep regime
Intermittent collective dynamics of domain walls in the creep regime Open
We study the ultra slow domain wall motion in ferromagnetic thin films driven\nby a weak magnetic field. Using time resolved magneto-optical Kerr effect\nmicroscopy, we access to the statistics of the intermittent thermally activated\ndoma…
View article: Pinning of domain walls in thin ferromagnetic films
Pinning of domain walls in thin ferromagnetic films Open
We present a quantitative investigation of magnetic domain wall pinning in\nthin magnets with perpendicular anisotropy. A self-consistent description\nexploiting the universal features of the depinning and thermally activated\nsub-threshol…