Scientific Commons: Sohini Kar

Localized reversible nanoscale phase separation in Pr_0.63Ca_0.37MnO_3 single crystal using a scanning tunneling microscope tip (2007)

Kar, Sohini, Raychaudhuri, A. K.

We report the destabilization of the charge ordered insulating (COI) state in a localized region of Pr_0.63Ca_0.37MnO_3 single crystal by current injection using a scanning tunneling microscope tip....

Investigation of the Effect of Microstructure and Grain Boundaries in Nanostructured CMR Thin Films Using Scanning Tunneling Microscopy (STM) and Local Conductance Map (LCMAP) (2006)

Kar, Sohini, Sarkar, Jayanta, Raychaudhuri, AK

We have investigated the spatially resolved local electronic properties of a nanostructured film of a colossal magnetoresistive (CMR) material by local conductance mapping (LCMAP) using a variable...

Investigation of the Effect of Microstructure and Grain Boundaries in Nanostructured CMR Thin Films Using Scanning Tunneling Microscopy (STM) and Local Conductance Map (LCMAP) (2006)

Kar, Sohini, Sarkar, Jayanta, Raychaudhuri, AK

We have investigated the spatially resolved local electronic properties of a nanostructured film of a colossal magnetoresistive (CMR) material by local conductance mapping (LCMAP) using a variable...

Temperature dependence of the gap in the density of states near the Fermi level in a hole doped manganite (2005)

Kar, Sohini, Mitra, J, Raychaudhuri, AK

In this paper, we report a model-based quantitative analysis of temperature dependent scanning tunneling spectroscopy (STS) data taken on epitaxial thin films of the hole doped manganite...

Temperature dependence of the gap in the density of states near the Fermi level in a hole doped manganite (2005)

Kar, Sohini, Mitra, J, Raychaudhuri, AK

In this paper, we report a model-based quantitative analysis of temperature dependent scanning tunneling spectroscopy (STS) data taken on epitaxial thin films of the hole doped manganite...

Fabrication of ordered array of nanowires of La0.67Ca0.33MnO3 (x=0.33) in alumina templates with enhanced ferromagnetic transition temperature (2004)

Shankar, Shantha K, Kar, Sohini, Raychaudhuri, AK, Subbanna, GN

We report fabrication of array of crystalline nanowires (average diameter of 65 nm) of colossal magnetoresistive oxide La0.67Ca0.33MnO3 (LCMO, x50.33) within anodized alumina templates by filling the...

Enhanced ferromagnetic transition temperature in nanocrystalline lanthanum calcium manganese oxide $(La_{0.67}Ca_{0.33}MnO_3)$ (2004)

Shankar, Shantha K, Kar, Sohini, Subbanna, GN, Raychaudhuri, AK

We report a novel, low temperature (450–600 $^oC$) route for the synthesis of highly crystalline and homogeneous nanoparticles of lanthanum calcium manganese oxide $La_{0.67}Ca_{0.33}MnO_3$ (LCMO)....