217 citations · 3.6k across the 102 of their papers we have counts for
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Influence of anti-site disorder and electron-electron correlations on the electronic structure of CeMnNi
Pampa Sadhukhan, Sunil Wilfred D'Souza, Vipin Kumar Singh +7
CeMnNi exhibits an unusually large spin polarization, but its origin has baffled researchers for more than a decade. We use bulk sensitive hard x-ray photoelectron spectroscopy…
Non-intrinsic superconductivity in InN epilayers: role of Indium Oxide
Abdul Kadir, Sourin Mukhopadhyay, Tapas Ganguli +5
In recent years there have been reports of anomalous electrical resistivity and the presence of superconductivity in semiconducting InN layers. By a careful correlation of the temp…
High spin polarization in the ferromagnetic filled skutterudites KFe4Sb12 and NaFe4Sb12
Goutam Sheet, H. Rosner, S. Wirth +6
The spin polarization of ferromagnetic alkali-metal iron antimonides KFe4Sb12 and NaFe4Sb12 is studied by point-contact Andreev reflection using superconducting Nb and Pb tips. Fro…
CeMnNi4: A soft ferromagnet with a high degree of transport spin polarization
Surjeet Singh, Goutam Sheet, Pratap Raychaudhuri +1
In this letter we introduce a new soft ferromagnetic compound, i.e. CeMnNi4, which exhibits a large moment (~4.95mu_B/Mn) and high degree of spin polarization. The system has a fer…
Anomalous bias dependence of tunnel magnetoresistance in a magnetic tunnel junction
Soumik Mukhopadhyay, I. Das, S. P. Pai +1
We have fabricated a spin-polarized tunneling device based on half metallic manganites incorporating as insulating barrier. An anomalous bias dependence of tunnel…
Interesting history effect in the magnetotransport properies of La0.55Ho0.15Sr0.3MnOz films on LaAlO3
P Raychaudhuri, A E P de Araujo, F L A Machado +2
We report the magnetoresistance measurements of a highly oriented La0.55Ho0.15Sr0.3MnOz film on LaAlO3 substrate. The film has a metal-insulator transition around 200 K and shows p…
Transport and Magnetic properties of laser ablated La0.7Ce0.3MnO3 films on LaAlO3: Effect of oxygen pressure, sample thickness and co-doping with Ca
P. Raychaudhuri, S. Mukherjee, A. K. Nigam +3
La0.7Ce0.3MnO3 is a relatively new addition in the family of colossal magnetoresistive manganites where the cerium ion is believed to be in the Ce4+ state. In this paper we report…
Critical behaviour in
S. Mukherjee, P. Raychaudhuri, A. K. Nigam
We have studied the critical behaviour in near the paramagnetic-ferromagnetic transition temperature. We have analysed our dc magnetisation data near the…
Metal-Insulator Transition and Ferromagnetism in the Electron Doped Layered Manganites La2.3-xYxCa0.7Mn2O7 (x=0,0.3,0.5)
P. Raychaudhuri, C. Mitra, A. Paramekanti +3
Bulk samples of La2.3-xYxCa0.7Mn2O7, x=0,0.3,0.5, with layered perovskite structure have been synthesized and investigated with respect to their electrical, electronic and magnetic…
A phenomenological model for magnetoresistance in granular polycrystalline colossal magnetoresistive materials: the role of spin polarised tunnelling at the grain boundaries
P. Raychaudhuri, T. K. Nath, A. K. Nigam +1
It has been observed that in bulk and polycrystalline thin films of collossal magnetoresistive (CMR) materials the magnetoresistance follows a different behaviour compared to singl…