315 citations
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- SASTRA UniversityIN24 papers
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10 papers · 1 filter
Unusual mixed valence of Eu in two new materials EuSr2Bi2S4F4 and Eu2SrBi2S4F4: Mössbauer and X-ray photoemission Spectroscopy investigations
Zeba Haque, Gohil Singh Thakur, Rangasamy Parthasarathy +9
We have synthesized two new Eu-based compounds, EuSr2Bi2S4F4 and Eu2SrBi2S4F4 which are derivatives of Eu3Bi2S4F4, an intrinsic superconductor with Tc = 1.5 K. They belong to a tet…
Two-dimensional isochronous nonstandard Hamiltonian systems
A. Durga Devi, R. Gladwin Pradeep, V. K. Chandrasekar +1
We identify a generic class of two dimensional nonstandard Hamiltonian systems which exhibit isochronous behaviour. This class of systems belongs to the two dimensional mixed Liéna…
Complex dynamics generated by negative and positive feedback delays of a prey-predator system with prey refuge: Hopf bifurcation to Chaos
Debaldev Jana, R. Gopal, M. Lakshmanan
Various field and laboratory experiments show that prey refuge plays a significant role in the stability of prey-predator dynamics. On the other hand, theoretical studies show that…
On the characterization of vector rogue waves in two-dimensional two coupled nonlinear Schrödinger equations with distributed coefficients
K. Manikandan, M. Senthilvelan, R. A. Kraenkel
We construct vector rogue wave solutions of the two-dimensional two coupled nonlinear Schrödinger equations with distributed coefficients, namely diffraction, nonlinearity and gain…
An analysis of spatiotemporal localized solutions in the variable coefficients (3+1)-dimensional nonlinear Schrödinger equation with six different forms of dispersion parameters
K. Manikandan, M. Senthilvelan
We construct spatiotemporal localized envelope solutions of a (3+1)-dimensional nonlinear Schrödinger equation with varying coefficients such as dispersion, nonlinearity and gain p…
Amplification of matter rogue waves and breathers in quasi-two-dimensional Bose-Einstein condensates
K. Manikandan, M. Senthilvelan, R. A. Kraenkel
We construct rogue wave and breather solutions of a quasi-two-dimensional Gross-Pitaevskii equation with a time-dependent interatomic interaction and external trap. We show that th…