Institute of Physics

Condensed Matter and
Material Physics Group @ IOP




  • Origin and tuning of room-temperature multiferroicity in Fe doped BaTiO3, P. Pal, K. Rudrapal, S. Mahana, S. Yadav, K. Singh, D. Topwal, A. R. Chaudhuri, D. Choudhury. Phys. Rev. B, 101, 64409, 2020
  • Site-substitution in GdMnO3: effects on structural, electronic and magnetic properties, Sudipta Mahana, Bipul Rakshit, Pronoy Nandi, Raktima Basu, Sandip Dhara, U Manju, Subhendra D Mahanti, D Topwal Phys. Rev. B, 102, 245120, 2020
  • Organic-Inorganic Hybrid Lead Halides as Absorber in Perovskite Solar Cells: A Debate on Ferroelectricity, Pronoy Nandi, Nam-Gyu Park, Dinesh Topwal, Hyunjung Shin J. Phys. D: Appl. Phys, 53, 493002, 2020
  • Engineering room-temperature multiferroicity in Bi and Fe co-doped BaTiO3, Pratap Pal, Tapas Paramanik, Krishna Rudrapal, Supriyo Majumder, Satish Yadav, Sudipta Mahana, Dinesh Topwal, Ram Janay Choudhary, Kiran Singh, Ayan Roy Chaudhuri, and Debraj Choudhury Applied Physics Letters, 117, 012901, 2020
  • Probing the Electronic Structure of Hybrid Perovskites in the Orientationally Disordered Cubic Phase, Pronoy Nandi, S. K. Pandey, Chandan Giri, Vijay Singh, L. Petaccia, U. Manju, Subhendra D. Mahanti, D. Topwal J. Phys. Chem. Lett. 11, 5719, 2020


  • Room Temperature Growth of CH3NH3PbCl3 Single Crystals by Solvent Evaporation Method, Pronoy Nandi, Chandan Giri, Diptikanta Swain, U. Manju and Dinesh Topwal CrystEngComm. 21, 656 (2019)
  • Tetramer Orbital-Ordering induced Lattice-Chirality in Ferrimagnetic, Polar MnTi2O4, A Rahaman, M Chakraborty, T Paramanik, RK Maurya, S Mahana, R Bindu, D Topwal, P Mahadevan, D Choudhury Phys. Rev. B, 100, 15162, 2019


  • Room Temperature Growth of CH3NH3PbCl3 Single Crystals by Solvent Evaporation Method, Pronoy Nandi, Chandan Giri, Diptikanta Swain, U. Manju and Dinesh Topwal CrystEngComm. (2018) (accepted for publication)
  • Self-immobilized Pd nanowires as an excellent platform for a continuous flow reactor: efficiency, stability and regeneration, Lipipuspa Sahoo, Moumita Rana, Sanjit Mondal, Neeru Mittal, Pronoy Nandi, A. Gloskovskii, U. Manju, D. Topwal and Ujjal K. Gautam Nanoscale, 10 (2018) 21396
  • Temperature Dependent Photo-induced reversible Phase Separation in Mixed Halide Perovskite, P. Nandi, Chandan Giri, D. Swain, U. Manju, SD. Mahanti, D. Topwal ACS Appl. Energy Mater., 1 (2018), 3807
  • GdCrO3: a potential candidate for low temperature magnetic refrigeration, S. Mahana, U. Manju, D. Topwal Journal of Physics D: Applied Physics 51 (2018) 305002
  • Angle dependent localized surface plasmon resonance from near surface implanted silver nanoparticles in SiO2 thin film, R.K. Bommali, D.P. Mahapatra, H. Gupta, Puspendu Guha, D. Topwal, G. Vijaya Prakash, S. Ghosh, P. Srivastava Journal of Applied Physics, 124 (2018) 063107
  • Role of local structural distortion in driving ferroelectricity in GdCrO3, S. Mahana, U. Manju, P. Nandi, E. Welter, K.R. Priolkar, D. Topwal Phys. Rev. B 97 (2018) 224107



  • CH3NH3PbI3, A Potential Solar Cell Candidate: Structural and Spectroscopic Investigations, Pronoy Nandi, Chandan Giri, Boby Joseph, S. Rath, U. Manju and D. Topwal, J. Phys. Chem. A 120 (2016) 9732
  • Structural and electronic phase evolution of Tin dioxide, Sudipta Mahana, Pitamber Sapkota, Saptarshi Ghosh, U. Manju, D. Topwal, arXiv: 1606.08137, 2016
  • Ion irradiation induced phase transition of Co in Co/Au multilayers, Vantari Siva, Siddharth S. Sahu, D.P. Datta, P.C. Pradhan, M. Nayak, V. Solanki, D. Topwal, Kartik Senapati, Pratap K. Sahoo, Journal of Alloys and Compounds 680 (2016) 722
  • Expansion of a Discrete [3 × 3] Mn9 Metallogrid to a μ-Carboxylato-Bridged Polymeric {Mn11}n Assembly, Avinash Lakma, Sayed Muktar Hossain, Rabindra Nath Pradhan, Dinesh Topwal, Andrea Cornia, and Akhilesh Kumar Singh, Eur. J. Inorg. Chem. 2016 (2016) 2993
  • Asymmetric band gaps in a Rashba film system, C. Carbone, P. Moras, P. M. Sheverdyaeva, D. Pacilé, M. Papagno, L. Ferrari, D. Topwal, E. Vescovo, G. Bihlmayer, F. Freimuth, Y. Mokrousov, and S. Blügel, Phys. Rev. 93 (2016) 125409


  • Giant magnetocaloric effect in Gd2NiMnO6 and Gd2CoMnO6 ferromagnetic insulators, J Krishna Murthy, K Devi Chandrasekhar, Sudipta Mahana, D Topwal and A Venimadhav, J. Phys. D: Appl. Phys. 48 (2015) 355001
  • Quantum confinement effects in low-dimensional systems, Dinesh Topwal, Pramana 84 (2015) 1023
  • Resonance Raman spectroscopic study for radial vibrational modes in ultra-thin walled TiO2nanotubes, Rajini P. Antony, Arup Dasgupta, Sudipta Mahana, D. Topwal, Tom Mathews and Sandip Dhara, Journal of Raman Spectroscopy 46 (2015) 231


  • Interpretation of valence band photoemission spectra at organic-metal interfaces, L. Giovanelli, F. C. Bocquet, P. Amsalem, H.-L. Lee, M. Abel, S. Clair, M. Koudia, T. Faury, L. Petaccia, D. Topwal, E. Salomon, T. Angot, A. A. Cafolla, N. Koch, L. Porte, A. Goldoni, and J.-M. Themlin, Phys. Rev. B 87 (2013) 035413


  • Two Distinct Phases of Bilayer Graphene Films on Ru(0001), M. Papagno, D. Pacilé, D. Topwal, P. Moras, P. M. Sheverdyaeva, F. D. Natterer, A. Lehnert, S. Rusponi, Q. Dubout, F. Calleja, E. Frantzeskakis, S. Pons, J. Fujii, I. Vobornik, M. Grioni, C. Carbone and H. Brune, ACS Nano 6 (2012) 9299
  • Quantum electron confinement in closely matched metals: Au films on Ag(111), D. Topwal, U. Manju, D. Pacilé, M. Papagno, D. Wortmann, G. Bihlmayer, S. Blügel, and C. Carbone, Phys. Rev. B 86 (2012) 085419
  • Electronic states of moiré modulated Cu films, P Moras, P M Sheverdyaeva, C Carbone, D Topwal, L Ferrari, G Bihlmayer, S Ouazi, S Rusponi, A Lehnert and H Brune, J. Phys.: Condens. Matter 24 (2012) 335502
  • Volume dependent quasiparticle spectral weight in NiS2−xSex system, C Marini, A Perucchi, P Dore, D Topwal, D D Sarma, S Lupi and P Postorino, Journal of Physics: Conference Series 359 (2012) 012012
  • Electronic structure study of ultrathin Ag(111) films modified by a Si(111) substrate and √3 × √3-Ag2Bi surface, M Ogawa, P M Sheverdyaeva, P Moras, D Topwal, A Harasawa, K Kobayashi, C Carbone and I Matsuda, J. Phys. Condens. Matter. 24 (2012) 115501
  • Temperature dependent photoemission spectroscopy on lightly-doped sodium tungsten bronze, S. Paul, A. Ghosh, A. Chakraborty, L. Petaccia, D. Topwal, D.D. Sarma, S. Oishi, S. Raj, Solid State Communications 152 (2012) 493
  • Varying molecular interactions by coverage in supramolecular surface chemistry, Y. Wang Y, S. Fabris , T. W. White, F. Pagliuca, P. Moras, M. Papagno, D. Topwal, P. Sheverdyaeva, C. Carbone, M. Lingenfelder, T. Classen, K. Kern, G. Costantini, Chem. Commun. 48 (2012) 534


  • Combined Raman and infrared investigation of the insulator-to-metal transition in NiS2−xSex compounds, C. Marini, A. Perucchi, D. Chermisi, P. Dore, M. Valentini, D. Topwal, D. D. Sarma, S. Lupi, and P. Postorino, Phys. Rev. B. 84 (2011) 235134
  • Final-state diffraction effects in angle-resolved photoemission at an organic-metal interface, F. C. Bocquet, L. Giovanelli, P. Amsalem, L. Petaccia, D. Topwal, S. Gorovikov, M. Abel, N. Koch, L. Porte, A. Goldoni, and J.-M. Themlin, Phys. Rev. B. 84 (2011) 241407
  • Enhanced spin relaxation in an ultrathin metal film by the Rashba-type surface, N. Miyata, H. Narita, M. Ogawa, A. Harasawa, R. Hobara, T. Hirahara, P. Moras, D. Topwal, C. Carbone, S. Hasegawa and I. Matsuda, Phys. Rev. B. 83 (2011) 195305


  • Probing the electronic transmission across a buried metal/metal interface, P. Moras, D. Wortmann, G. Bihlmayer, L. Ferrari, G. Alejandro, P. H. Zhou, D. Topwal, P. M. Sheverdyaeva, S. Blügel, and C. Carbone, Phys. Rev. B. 82 (2010) 155427
  • Electronic structure of the two-dimensionally ordered Mn/Cu(110) magnetic surface alloy, U. Manju, D. Topwal, G. Rossi, and I. Vobornik, Phys. Rev. B. 82 (2010) 035442
  • Evidence of graphene-like electronic signature in silicene nanoribbons, P. D. Padova, C. Quaresima, C. Ottaviani, P. M. Sheverdyaeva, P. Moras, C. Carbone, D. Topwal, B. Olivieri, A. Kara, H. Oughaddou, B. Aufray and G. L. Lay, Appl. Phys. Lett. 96 (2010) 261905
  • Direct Spectroscopic Evidence of Spin-Dependent Hybridization between Rashba-Split Surface States and Quantum-Well States, K. He, Y. Takeichi, M. Ogawa, T. Okuda, P. Moras, D. Topwal, A. Harasawa, T. Hirahara, C. Carbone, A. Kakizaki, and I. Matsuda, Phys. Rev. Lett. 104 (2010) 156805
  • Stabilizing Monomeric Iron Species in a Porous Silica/Mo(112) Film, Jan-Frederik Jerratsch, Niklas Nilius, Dinesh Topwal, Umberto Martinez, Livia Giordano, Gianfranco Pacchioni and Hans-Joachim Freund, ACS Nano 4 (2010) 863
  • Modification of electronic structure in thin Ag quantum films induced by surface umklapp scattering of Bi/Ag surface alloy, M. Ogawa, P. Moras, D. Topwal, A. Harasawa, C. Carbone, I. Matsuda, 18th International of Vacuum Congress, 2010
  • Electronic structure of Mn/Cu (110) a two-dimensional ordered magnetic surface alloy, U Manju, D Topwal, G Rossi, I Vobornik, 18th International of Vacuum Congress, 2010


  • Influence of the substrate bands on the sp-levels topology of Ag films on Ge(111), P. Moras, D. Topwal, P. M. Sheverdyaeva, L. Ferrari, J. Fujii, G. Bihlmayer, S. Blügel, and C. Carbone, Phys. Rev. B. 80 (2009) 205418
  • Pressure and alloying effects on the metal to insulator transition in NiS2−xSex studied by infrared spectroscopy, A. Perucchi, C. Marini, M. Valentini, P. Postorino, R. Sopracase, P. Dore, P. Hansmann, O. Jepsen, G. Sangiovanni, A. Toschi, K. Held, D. Topwal, D. D. Sarma, and S. Lupi, Phys. Rev. B. 80 (2009) 073101
  • Spin-polarized electron tunneling in polycrystalline Sr2FeMoO6 thin films, P K Muduli, R C Budhani, D Topwal and D D Sarma, Journal of Physics: Conference Series 150 (2009) 042132


  • Spatially-Resolved X-Ray Microstructural Studies of Bulk Phase Separation in Manganites, J. D. Budai, D. D. Sarma, W. Liu, J. Z. Tischler, B. C. Larson, G. Shenoy, D. Topwal, S. W. Cheong, APS March Meeting, March 10-14, 2008

2007 - 2000

  • Enhanced Ionic Conductivity in Ce0.8Sm0.2O1.9: Unique Effect of Calcium Co-doping, S. Banerjee, P. S. Devi, D. Topwal, S. Mandal, K. Menon, Adv. funct. mater 17 (2007) 2847
  • Mapping Structural Phase Separation in Eu0.5Y0.5MnO3 using 3D X-ray Microdiffraction, J. D. Budai, J. Z. Tischler, W. Liu, D. D. Sarma, D. Topwal, G. Shenoy, W. Yang, B. C. Larson, S. W. Cheong, A. A. Mukhin, APS March Meeting, March 5-9, 2007
  • Structural and magnetic properties of Sr2Fe1+xMo1−xO6 (−1⩽x⩽0.25), Dinesh Topwal, D. D. Sarma, H. Kato, Y. Tokura, and M. Avignon, Phys. Rev. B 73 (2006) 094419
  • A microspectroscopic study of the electronic homogeneity of ordered and disordered Sr2FeMoO6, Dinesh Topwal, U. Manju, Sugata Ray, S. Raj, D. D. Sarma, S. R. Krishnakumar, M. Bertolo, S. La Rosa, G. Cautero, Journal of Chemical Sciences 118 (2006) 8792
  • Electronic structure of Ca3CoXO6 (X=Co, Rh, Ir) studied by x-ray photoemission spectroscopy, K. Takubo, T. Mizokawa, S. Hirata, J.-Y. Son, A. Fujimori, D. Topwal, D. D. Sarma, S. Rayaprol, and E.-V. Sampathkumaran, Phys. Rev. B 71 (2005) 073406
  • Direct Observation of Large Electronic Domains with Memory Effect in Doped Manganites, D. D. Sarma, Dinesh Topwal, U. Manju, S. R. Krishnakumar, M. Bertolo, S. La Rosa, G. Cautero, T. Y. Koo, P. A. Sharma, S.-W. Cheong, and A. Fujimori, Phys. Rev. Lett. 93 (2004) 097202
  • Structural and doping effects in the half-metallic double perovskite A2CrWO6 (A=Sr, Ba, and Ca), J. B. Philipp, P. Majewski, L. Alff, A. Erb, R. Gross, T. Graf, M. S. Brandt, J. Simon, T. Walther, W. Mader, D. Topwal, and D. D. Sarma, Phys. Rev. B. 68 (2003) 144431
  • Electron Spectroscopic Data of La1−xSrxMnO3 and La1−xSrxCoO3, D. D. Sarma, Dinesh Topwal, and A. Chainani, Surface Science Spectra 6 (2000) 274