27 citations · 121 across the 22 of their papers we have counts for
22 papers
Collective dynamics in a one-dimensional Heisenberg ferromagnetic spin chain
R. Arun, M. Lakshmanan, Avadh Saxena
We investigate the different oscillatory modes, namely, complete synchronization, inphase synchronization, antiphase synchronization and desynchronization in a one-dimensional anis…
Self-oscillations induced by self-induced torque in magnetic double tunnel junction
R. Arun, R. Gopal, V. K. Chandrasekar +1
Self-oscillations of the magnetization due to self-induced torque (SIT) in a magnetic double tunnel junction that consists of perpendicularly polarized, pinned and free layers is i…
Reservoir computing with logistic map
R. Arun, M. Sathish Aravindh, A. Venkatesan +1
Recent studies on reservoir computing essentially involve a high dimensional dynamical system as the reservoir, which transforms and stores the input as a higher dimensional state,…
Exploration of field-like torque and field-angle tunability in coupled spin-torque nano oscillators for synchronization
R. Arun, R. Gopal, V. K. Chandrasekar +1
We investigate the influence of field-like torque and the direction of the external magnetic field on a one-dimensional array of serially connected spin-torque nano oscillators, ha…
Soliton molecules in Fermi-Pasta-Ulam-Tsingou lattice: Gardner equation approach
M. Kirane, S. Stalin, R. Arun +1
We revisit the Fermi-Pasta-Ulam-Tsingou lattice (FPUT) with quadratic and cubic nonlinear interactions in the continuous limit by deducing the Gardner equation. Through the Hirota…
High frequency oscillations in spin-torque nano oscillator due to bilinear coupling
R. Arun, R. Gopal, V. K. Chandrasekar +1
Exchange coupling in an interfacial context is crucial for spin-torque nano oscillator (STNO) that consists of a non-magnetic spacer which is alloyed with a ferromagnetic material.…
Effect of interlayer exchange coupling in spin-torque nano oscillator
R. Arun, R. Gopal, V. K. Chandrasekar +1
The dynamics of the magnetization of the free layer in a spin-torque nano oscillator (STNO) influenced by a noncollinear alignment between the magnetizations of the free and pinned…
Spin Torque Oscillations Triggered by In-plane Field
R. Arun, R. Gopal, V. K. Chandrasekar +1
We study the dynamics of a spin torque nano oscillator that consists of parallelly magnetized free and pinned layers by numerically solving the associated Landau-Lifshitz-Gilbert-S…
Spin-transfer torque driven localized spin excitations in the presence of field-like torque
M. Lakshmanan, R. Arun, Avadh Saxena
We study the existence of localized one-spin excitation in the Heisenberg one-dimensional ferromagnetic spin chain in the presence of perpendicular and parallel external magnetic f…
Large Amplitude Spin-Hall Oscillations due to Field-like Torque
R. Arun, R. Gopal, V. K. Chandrasekar +1
Large amplitude spin-Hall oscillations are identified in a ferromagnetic layer with two perpendicular in-plane easy axis in the presence of field-like torque without any polarizer…
Frequency enhancement and power tunability in tilted polarizer spin-torque nano oscillator
R. Arun, 1 R. Gopal, V. K. Chandrasekar +1
In the absence of an applied magnetic field, a spin-torque nano oscillator(STNO) with a tilted polarizer is studied using numerical simulation of the associated Landau-Lifshitz-Gil…
Spin-transfer torque driven intrinsic localized spin excitations in the presence of field-like torque
M. Lakshmanan, R. Arun, Avadh Saxena
We study the existence of intrinsic localized one-spin excitation in the Heisenberg one-dimensional ferromagnetic spin chain in the presence of perpendicular and parallel external…
Influence of field-like torque in synchronization of spin torque oscillators
R. Arun, R. Gopal, V. K. Chandrasekar +1
The magnetization dynamics of two parallelly coupled spin torque oscillators, destabilization of steady states and removal of multistability, are investigated by taking into accoun…
Superluminal light propagation via quantum interference in decay channels
R. Arun
We examine the propagation of a weak probe light through a coherently driven -type system. Under the condition that the excited atomic levels decay via same vacuum modes, the ef…
Effect of Transverse Magnetic Field on Dynamics of Current Driven Domain Wall Motion in the Presence of Spin-Hall Effect
R. Arun, P. Sabareesan, M. Daniel
Theoretically, we study the dynamics of a current induced domain wall in the bi-layer structure consists of a ferromagnetic layer and a non-magnetic metal layer with strong spin-or…
Dynamics of Current and Field Driven Domain Wall Motion under the Influence of Transverse Magnetic Field
R. Arun, P. Sabareesan, M. Daniel
The dynamics of transverse Neel domain wall in a ferromagnetic nanostrip in the presence of driving field, current and transverse magnetic field is investigated by the Landau-Lifsh…
Impact of Current on Static and Kinetic Depinning Fields of Domain Wall in Ferromagnetic Nanostrip
R. Arun, P. Sabareesan, M. Daniel
The impact of current on static and kinetic depinning fields of a domain wall in an one dimensional ferromagnetic nanostrip is investigated by solving the Landau-Lifshitz-Gilbert e…
Phase control of squeezing in fluorescence radiation
R. Arun
We study squeezing properties of the fluorescence radiation emitted by a driven -type atom in which the metastable lower energy levels are coupled by an additional field. We fin…
Interference-assisted squeezing in fluorescence radiation
R. Arun
The squeezing spectrum of the resonance fluorescence is studied for a coherently driven four-level atom in the Y-type configuration. It is found that the squeezing properties of th…
Atom Lithography with Near-Resonant Light Masks: Quantum Optimization Analysis
R. Arun, Offir Cohen, I. Sh. Averbukh
We study the optimal focusing of two-level atoms with a near resonant standing wave light, using both classical and quantum treatments of the problem. Operation of the focusing set…
Dark States and Interferences in Cascade Transitions of Ultra-Cold Atoms in a Cavity
R. Arun, G. S. Agarwal
We examine the competition among one- and two-photon processes in an ultra-cold, three-level atom undergoing cascade transitions as a result of its interaction with a bimodal cavit…
Tunneling and Traversal of Ultra-cold Atoms through Vacuum Induced Potentials
R. Arun, G. S. Agarwal
We examine the passage of ultra-cold two-level atoms through the potential produced by the vacuum of the cavity field. The peak of the transmitted wave packet generally occurs at t…