Debjani Karmakar on Muck Rack

Debjani Karmakar

As seen in: Nature, Physical Review B
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Articles

Impact of pressure on the structural, Raman, superconducting, and normal state resistivity properties of Y 5 Rh 6 Sn 18 quasi-skutterudite single crystal

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By Govindaraj Lingannan, Muthukumaran Sundaramoorthy, Thiagarajan Maran, Anwesha Chakraborty, Chin Shan Lue, Debjani Karmakar, Anna Delin, Olle Eriksson, Mahmoud Abdel-Hafiez, Boby Joseph, Chia Nung Kuo, Sonachalam Arumugam
| Nature Verified
Abstract High-pressure (HP) electrical resistivity measurements of superconducting quasi-skutterudite Y5Rh6Sn18 single crystals were conducted up to 10.7 GPa using a diamond anvil pressure cell. Additionally, HP synchrotron X-ray powder diffraction (XRPD) studies were performed on Y5Rh6Sn18 up to 8 GPa and Sc5Rh6Sn18 up to 11.7 GPa, along with HP Raman spectroscopy.
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Magnetism in $A{\mathrm{V}}_{3}{\mathrm{Sb}}_{5}$ ($A=\mathrm{Cs},\mathrm{Rb},\mathrm{K}$): Complex landscape of dynamical magnetic textures

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By Debjani Karmakar, Manuel Pereiro, Nur Hasan, Block JD
| Physical Review B
We have investigated the dynamical magnetic properties of the V-based kagome stibnite compounds by combining the ab initio-extracted magnetic parameters of a spin-Hamiltonian, like inter-site exchange parameters, magnetocrystalline anisotropy and site projected magnetic moments, with full-fledged simulations of atomistic spin- dynamics.
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Anisotropic nonlinear optical response in a graphene oxide-gold nanohybrid

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By K. V. Adarsh, Rajesh Kumar Yadav, Debjani Karmakar, J. Aneesh
| osapublishing.org
Abstract In this Letter, we report for the first time, to the best of our knowledge, the anisotropic optical response in a graphene oxide (GO)-gold (Au) nanohybrid. Polarization-sensitive nonlinear optical absorption measurements revealed that nanohybrids are highly anisotropic, $({\beta _ \bot} - {\beta _\Vert})\; \approx \!{{28}}\;{\rm{cm/GW}}$, which is more than one order of magnitude higher than that of control GO (2 cm/GW).
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