Publications by authors named "M Roychowdhury"

Article Synopsis
  • The study investigates how substituting manganese (Mn) at B sites affects the structural, electronic, magnetic, and optical properties of nickel chromate spinel (NiCrO), revealing no major structural distortion but changes in bond angles and lengths as Mn content varies.
  • Electronic structure analysis shows that nickel is divalent while chromium and manganese remain trivalent, with these configurations influencing the material's semiconducting nature and direct bandgap that ranges from 1.16 to 2.40 eV.
  • All compositions exhibit ferrimagnetic ordering below the Néel temperature, with magnetic properties improving as Mn is added; however, the anisotropy shows a decreasing trend which is attributed to
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The cubic perovskite SrMoO with a paramagnetic ground state and remarkably low room-temperature resistivity has been considered as a suitable candidate for the new-era oxide-based technology. However, the difficulty of preparing single-phase SrMoO thin films by hydrogen-free sputtering has hindered their practical use, especially due to the formation of thermodynamically favorable SrMoO impurity. In this work, we developed a radio frequency sputtering technology enabling the reduction reaction and achieved conductive epitaxial SrMoO films with pure phase from a SrMoO target in a hydrogen-free, pure argon environment.

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We report the experimental determination of the magnetic exchange parameter (J/kB= 2.88 ± 0.02 K) for the Spin-3/2 ferromagnetic (FM) Kagomé lattice system: CoVOusing the temperature dependence of dc-magnetic susceptibility() data by employing the fundamental Heisenberg linear chain model.

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Dermatomycosis or superficial mycosis is considered one of the chronic fungal infections and a global challenge for the public health system. The severity of dermatomycosis is proportionately increasing with the emerging population of immunocompromised individuals, and it is becoming more prevalent, even life-threatening, in several tropical countries. In this context, improper long-term treatment with synthetic antifungal drugs and their related side effects imposes additional challenges in treating dermatomycosis.

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We present experimental demonstrations of accurate and unambiguous single-shot discrimination between three quantum channels using a single trapped ^{40}Ca^{+} ion. The three channels cannot be distinguished unambiguously using repeated single channel queries, the natural classical analogue. We develop techniques for using the six-dimensional D_{5/2} state space for quantum information processing, and we implement protocols to discriminate quantum channel analogues of phase shift keying and amplitude shift keying data encodings used in classical radio communication.

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