Faculty Details

Areas of Interest

• Interface physics in artificial materials such as thin films, thin film multilayers and superlattices of transition metal oxides materials and corresponding device engineering.

Current Research

My research focuses on interface physics in thin films, thin film multilayers and superlattices. My group is involved in (i) fabrication and study of transition metal oxides materials, (ii) fabrication, processing and measurement of electronic transport of transition metal oxides based junctions, and (iii) corresponding device engineering. We also synthesize and characterize nanostructures of transition metal chalcogenides and oxides materials, i.e., nanoparticles. In addition, we perform theoretical condense matter physics calculations, like band structure and spin texture simulations using first principles density functional theory.

Students

Current PhD Students

• PH16D004    BIBEKANANDA DAS
• PH18D200    VIPIN K E
• PH19D005    SATYASIBAN DASH
• PH20D090    RASMI RANJAN MOHAPATRA
• PH21D015    SANTOSH KUMAR SAHU
• PH21D053    SANDIP KUMAR PADHI

Recent Publications

• Suppression of spin-orbit coupling effect by the ZnO layer of the La0.7Sr0.3MnO3/ZnO heterostructures grown on (001) oriented Si - restores the negative magnetoresistance. Bibekananda Das and Prahallad Padhan. Nanoscale. 13. 4871.
  DOI: https://doi.org/10.1039/D0NR06769E. 2021.
• Interfacial reconstruction in La0.7Sr0.3MnO3 thin films : giant low-field magnetoresistance. Umesh Kumar Sinha, Bibekananda Das, and Prahallad Padhan. Nanoscale Advances. 2. 2792.
  DOI: https://doi.org/10.1039/D0NA00287A. 2020.
• Evidence of weak antilocalization in quantum interference effects of (001) oriented La0.7Sr0.3MnO3–SrRuO3 superlattices. Roshna S. H., W. Prellier and Prahallad Padhan. Journal of Applied Physics. 128. 033906.
  DOI: https://doi.org/10.1063/5.0014909. 2020.
• Tunable structure and magnetic properties in Fe3-xVxGe alloys. R. Mahat, K. C. Shambhu, S. Regmi, D. Wines, F. Ersan, C. Ataca, Prahallad Padhan, A. Gupta, and P. LeClair. Journal of Alloys Compound.. 830. 154403.
  DOI: https://doi.org/10.1016/j.jallcom.2020.154403. 2020.
• Strain modulated magnetocaloric effect in (111) oriented La0.7Sr0.3MnO3–SrRuO3 superlattices. Roshna S. H., W. Prellier and Prahallad Padhan. Nanoscale. 12. 5151.
  DOI: https://doi.org/10.1039/D0NR00620C. 2020.
• Surface-Induced Enhanced Band Gap in the (0001) Surface of Bi2Se3 Nanocrystals: Impacts on Topological effect. Soumendra Kumar Das and Prahallad Padhan. ACS Applied Nano Materials. 3. 274-282.
  DOI: https://doi.org/10.1021/acsanm.9b01941. 2020.
• Asymmetric spin dependent scattering at the interfaces of Si/La0.7Sr0.3MnO3/ZnO heterostructures. Bibekananda Das and Prahallad Padhan. Applied Physics Letters. 115. 222401.
  DOI: https://doi.org/10.1063/1.5115809. 2019.
• Tunable properties and potential half-metallicity in (Co2-xTix)FeGe Heusler alloys: An experimental and theoretical investigation. K. C. Shambhu, R. Mahat, S. Regmi, A. Mukherjee, Prahallad Padhan, R. Datta, W. H. Butler, A. Gupta, and P. LeClair. Physical Review Materials. 3. 114406.
  DOI: https://doi.org/10.1103/PhysRevMaterials.3.114406. 2019.
• Effect of Symmetry Breaking on Interlayer Exchange Coupling and Electrical Conduction in SrRuO3–PrMnO3 Superlattices. Antarjami Sahoo, Wilfrid Prellier, and Prahallad Padhan. Advanced Materials Interfaces. 5. 1800913 . 2018.
• Apparatus and method for the growth of epitaxial complex oxides on native amorphous SiO2 surface of (001) oriented single crystal silicon. Prahallad Padhan, Umesh Kumar Sinha, and Antarjami Sahoo. Review of Scientific Instruments. 89. 085102 . 2018.
• Ultrathin scale tailoring of anisotropic magnetic coupling and anomalous magneto-resistance in SrRuO3/PrMnO3 superlattices. Antarjami Sahoo, Wilfrid Prellier, and Prahallad Padhan. ACS Applied Materials and Interfaces. 10. 44190.
  DOI: https://doi.org/10.1021/acsami.8b17385. 2018.
• Pulsed laser deposition of Sr2FeMoO6 thin films grown on spark plasma sintered Sr2MgWO6 substrates. M Santosh, M Lacotte, A David, Ph Boullay, C Grygiel, D Pravarthana, G S Rohrer, P A Salvador, P Padhan, U Lüders, Junling Wang and W Prellier. Journal of Physics D: Applied Physics. 50 . 235301 . 2017.
• Interfacial Antiferromagnetic Coupling and Dual-Exchange Bias in Tetragonal SrRuO3−PrMnO3 Superlattices. Antarjami Sahoo, Prahallad Padhan, and Wilfrid Prellier. ACS Applied Materials & Interfaces. 2017.
• Effect of La0.7Sr0.3MnO3 crystal structures on magnetization of (1 1 1) oriented La0.7Sr0.3MnO3–SrRuO3 superlattices. B C Behera, P Padhan and W Prellier. Journal of Physics: Condensed Matter. 28 . 196004 . 2016.
• Influence of substrate in all-ferromagnetic superlattices. B. C. Behera, Prahallad Padhan, W. Prellier. Journal of Magnetism and Magnetic Materials. 388 . 22. 2015.
• Laser induced structural phase transformation of cobalt oxides nanostructures. A. V. Ravindra, B. C. Behera and Prahallad Padhan,. Journal of Nanoscience and Nanotechnology. 14 . 5591. 2014.
• Raman spectra and magnetization of all-ferromagnetic superlattices grown on (110) oriented SrTiO3. B. C. Behera, A. V. Ravindra, Prahallad Padhan, and W. Prellier,. Applied Physics Letters. 104 . 092406. 2014.
• Structural phase transformation of nickel nanostructures with synthetic approach conditions. B. C. Behera, A. V. Ravindra, and Prahallad Padhan,. Journal of Applied Physics. 115 . 17B510. 2014.
• Tailoring of crystal phase and Neel temperature of cobalt monoxides nanocrystals with synthetic approach conditions. A. V. Ravindra, B. C. Behera, Prahallad Padhan, O. I. Lebedev and W. Prellier,. Journal of Applied Physics. 116 . 033912. 2014.
• Electronic structure and optical band gap of CoFe2O4 thin film. A. V. Ravindra, Prahallad Padhan and W. Prellier. Applied Physics Letters. 101 . 161902. 2012.
• Size effect on magnetic coupling in all-ferromagnetic superlattices. Prahallad Padhan and W. Prellier. Applied Physics Letters. 99 . 263108. 2011.
• Magnetocaloric effect and improved relative cooling power in La0.7Sr0.3MnO3/SrRuO3 superlattices. Q. Zhang, S. Thota, F. Guillou, Prahallad Padhan, V. Hardy, A. Wahl and W. Prellier,. Journal of Physics: Condensed Matter. 23 . 052201. 2011.
• Tunable Magnetic Interaction at the Atomic Scale in Oxide Heterostructures. J.W. Seo, W. Prellier, Prahallad Padhan, P. Boullay, J.-Y. Kim, H. Lee, C. D. Batista, I. Martin,. Physical Review Letters. 105 . 167206 . 2010.
• Anisotropic magnetocaloric effect in all-ferromagnetic La0.7Sr0.3MnO3/ SrRuO3 superlattices. S. Thota, Q. Zhang, F. Guillou, U. Lüders, N. Barrier, W. Prellier, A. Wahl, and Prahallad Padhan. Applied Physics Letters. 97 . 112506 . 2010.
• Effect of stacking order on the magnetic and transport properties of bilayer-basedoxide superlattices with inversion symmetry. Prahallad Padhanand W. Prellier. Applied Physics Letters. 95 . 203107 . 2009.
• Formation Mechanism and Shape Control of Monodisperse Magnetic CoFe2O4 Nanocrystal. N. Bao, L. Shen, Wei An, Prahallad Padhan, C. Heath Turner, and A. Gupta,. Chemistry of Materials. 21 . 3458. 2009.
• Magnetodielectric effect in Bi2NiMnO6 – La2NiMnO6 superlattices. Prahallad Padhan, P. LeClair, A. Gupta, M A Subramanian and G. Srinivasan,. Journal of Physics: Condensed Matter. 21 . 306004. 2009.
• Temperature-dependent Raman study of multiferroic Bi2NiMnO6 thin film. M. N. Iliev, Prahallad Padhan and A. Gupta,. Physical Review B. 77 . 172303. 2008.
• Self-Assembly and Magnetic Properties of Shape-Controlled Monodisperse CoFe2O4 Nanocrystal. N. Bao, L. Shen, Prahallad Padhan, and A. Gupta,. Applied Physics Letters. 92 . 173101. 2008.
• Magneto-dielectric response in epitaxial thin films of Bi2NiMnO6. Prahallad Padhan, P. LeClair, A. Gupta and G. Srinivasan,. Journal of Physics: Condensed Matter. 20 . 355003. 2008.
• Dielectric relaxation and magnetodielectric response in epitaxial thin films of La2NiMnO6. Prahallad Padhan, H. Z. Guo, P. LeClair and A. Gupta,. Applied Physics Letters.. 92 . 022909. 2008.
• A Facile Thermolysis Route to Monodisperse Ferrite Nanocrystals. N. Bao, L. Shen, Y. Wang, Prahallad Padhan, and A. Gupta, J. Am.. Journal of the American Chemical Society (Communication);. 129 . 12374. 2007.
• Size-Controlled Synthesis of Magnetic CuCr2Se4 Nanocrystals. Yu-Hsiang A. Wang, N. Bao, L. Shen, Prahallad Padhan, and A. Gupta, J. Am.. Journal of the American Chemical Society (Communication);. 129 . 12408. 2007.
• Anomalous exchange coupling in transition-metal-oxide based superlattices with antiferromagnetic spacer layers. Prahallad Padhan, W. Prellier and R. C. Budhani. Journal of Applied Physics. 102 . 043909.
  DOI: https://doi.org/10.1063/1.2770818. 2007.

Teaching

• 2017 :  (Jan - May) - PH1020 Physics II; (Jul - Nov) - EP2090 Engineering Physics Lab I / PH2050 Physics Lab III / PH5310 Synthesis and Characterization of Functional Materials
• 2018 :  (Jan-May) - EP3190 Engineering Physics Lab II / PH2080 Physics Lab IV / PH6012 Fundamentals of Semiconductor Physics and Devices; (Jul - Nov) - EP2090 Engineering Physics Lab I / PH2050 Physics Lab III / PH5011 Science and Technology of Solid state
• 2019 :  (Jan-May) - EP3190 Engineering Physics Lab II/ PH2080 Physics Lab IV / PH5360 Project / PH5380 Seminar / PH6012 Fundamentals of Semiconductor Physics and Devices; (Jul - Nov) - EP2090 Engineering Physics Lab I / PH2050 Physics Lab III / PH5011 Science and Technology of Solid state
• 2020 :  (Jan-May) - EP3190 Engineering Physics Lab II / PH5360 Project / PH5380 Seminar / PH5720 Numerical Methods and Programming Lab
• 2021 :  (Jan-May) - PH6013 Functional Materials Sensors and Transducers ; (Jul - Nov) - PH1010 Physics I
• 2022 :  (Jan-May) - EP3190 Engineering Physics Lab II / PH6013 Functional Materials Sensors and Transducers ; (Jul - Nov) - PH1030 Physics Laboratory I / PH5360 Project / PH5690 Applied Magnetics
• 2023 :  (Jan-May) - PH1030 Physics Laboratory I / PH5230 Seminar / PH5240 Viva Voce / PH5340 Dielectric,Magnetic &Optical Materials / PH5350 Laboratory for Physical Property Measurement and Transducer / Sensor Element Characteristics of Func / PH5360 Project / PH5380 Seminar / PH6015 Advanced Materials and Nanotechnology Lab