Talks Given
Talk delivered :
1. Invited Talk at the QMat conference, titled “Studying the peculiarities of the Metal Insulator Transition in NdNiO3 films using the self field imaging technique”, Sept. 17, 2022
2. Colloquium in Dept. of Physics at IIT Madras, 3rd August, 2022 “A new way to image and map surface conductivity in condensed matter systems”
3. Invited talk at IIT Hyderabad, Conference on Recent advances in magnetism, 20th Dec, 2021 “Imaging the current distribution across the Metal Insulator Transition in NdNiO3 thin film”.
4. Invited talk at Online QMat Conference, S. N. Bose Center 10th Sept 2020. “Using current mapping to image a phase transformation in Bi2Se3 topological insulator”
5. Invited talk at Vortex Workshop 2019, “Disorder induced lowering of vortex dimension in Pnictide superconductor and precipitation of thermal melting of a dilute vortex solid phase” May 20-25th, 2019, Antwerp, Belgium
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6. Invited talk “Low field vortex melting phenomenon in Pnictide superconductors” Current Trends in Material Science and Engineering, 18-20th July 2019, S. N. Bose Center Kolkata.
7. Invited talk “Exploring the interplay between surface and bulk conductivity in Bi2Se3 and the role of disorder, using a sensitive non contact technique” 5-6th September 2019, Flatlands, S . N. Bose Center, Kolkata
8. Delivered IISER Bhopal, Colloquium,” From Magnetic polarons to Magnetic domains” 14th March 2019.
9. Indo – Singapore Physics Symposium, Puri, Bhubaneshwar, 2-4th March 2019. Delivered Invited Talk” Exploring the magnetic polaronic state near the ferromagnetic transition in EuB6 through domain imaging using Magneto-optical imaging” .
10. MRSI AGM, IISc Bangalore, 14-17th Feb. 2019 Delivered Invited talk,.” Exploring the magnetic polaronic state near the ferromagnetic transition in EuB6 through domain imaging using Magneto-optical imaging”.
11. Delivered Seminar in Dept of Physics, IISc Bangalore, 12th Nov. 2018 “Low Dimensional Melting in Pnictide Superconductor”
12. QMat Conference, IISER Mohali, 24th July – 27th July 2018. Invited talk on “Exploring nature of magnetic ordering and probing magnetic polaronic state near the ferromagnetic transition in EuB6 single crystal using Magneto-optical imaging”
13. Colloquium TIFR Hyderabad 14th March 2018 “Seeing magnetic fields and electric currents using light”.
14. Invited talk at Recent Trends in Condensed Matter Physics, IACS Kolkata, 16th – 17 January 2018, Kolkata. Talk title ”Evidence of superconducting and magnetic fluctuations both above and below Tc in BaFe2-xCoxAs2 single crystals”
15. Invited as session organizer Chairman and member for the 6th International Symposium on Integrated Functionalities (www.isif2017.com), which will take place in in New Delhi, India from Dec 10-13, 2017.
16. Invited speaker at Vortex 2017, held in International Institute of Physics, UFRN, Natal Brazil May 28th - June 3, 2017 (http://vortex2017.org/). Talk title “Evidence of superconducting and magnetic fluctuations both above and below Tc in BaFe2-xCoxAs2 single crystals”
17. Invited talk at 4th Indian Statistical Physics Community Meeting to be held during 17–19 February 2017 at ICTS, Bangalore.Title ” Validity of Fluctuation Relations in driven condensed matter systems”
18. Invited talk “Jamming phenomenon and fluctuation relations in the driven vortex state of superconductors” Contemporary issues in condensed matter systems, IISc Bangalore, 14th June 2016.
19. Invited talk “Evidence of Interplay between magnetic and superconducting fluctuations above Tc in doped iron arsenide compound” IIT Kanpur, Dept. day talk, 6th Feb.2016.
20. Invited talk “Evidence of magnetic and superconducting fluctuations present below and above Tc in doped Iron Arsenide superconductor”, Conference on Quantum Disordered Systems, IMSc, Chennai, 2nd March 2016.
21. Colloquium, IISER Bhopal “Multiple current carrying states in a nanopatterned superconductor”, 30th Sept. 2015.
22. Invited talk "Large Negative velocity events and validity of non equilibrium fluctuation relations at the unjamming threshold in the driven vortex state of 2H-NbS2" Vortex Workshop, SL Escorial ,Spain, 10st -15th May, 2015 Talk : 15th May, 2015.
23. Invited talk on "Multiple current carrying states in nanopatterned superconductors" Indo Japan workshop on Nanomagnetism, NISER-IOP Bhubaneshwar, Jan 9 - 12th, 2015.
24. Invited talk on "Jamming phenomenon and Fluctuation relations for the driven vortex state in superconductors" the 6th Indo Israel Meeting on frontiers in condensed matter physics, Israel academy of Science and Humanities, Jerusalem, Israel from 6th - 11th Dec. 2014.
25. Invited talk "Commensurate - incommensurate domains and driven domain walls in the vortex state of nanopatterned superconductors", StatPhys-Kolkata VIII, 2014, S. N. Bose center, Dec.1 to 5th, 2014.
26. Invited talk "Unusual Critical state in nanopatterned SC" International Workshop on Advances in nanostructured superconductors: materials, properties and theory “La Cristalera”, Miraflores de la Sierra, Madrid, 4 - 7 May (2014).
27. Invited talk at the Indian Statistical Physics Community meeting (ISPCM) in IISc Bangalore, 1st - 3rd Feb. 2014 (Saturday). The title is "Dynamic phases of the driven vortex state in superconductors: Jamming phenomena"
28. Invited talk " Competition between magnetic and superconducting order in an Iron Pnictide superconductor", IUMRS conference, IISc. Bangalore, 16th to 20th Dec.2013.
29. Invited Talk "Competition between magnetism and superconductivity in an underdoped Iron Pnictide superconductor", 14th International Workshop on Vortex matter in superconductors, Nanjing China, May 21 - 28th, 2013.
30. Invited Talk “Detecting ultra small changes in magnetization associated with phase transition in superconductors and the development of sensitive metallic nanocantilevers” 6th India - Singapore Joint Physics Symposium (ISJPS - 2013) at IIT Kharagpur, between February 25 -27, 2013.
31. Invited Talk “Advances in magneto-optical imaging” at Punjab University 7th Chandigarh Science congress (CHASCON), from March 1-3, 2013.
32. Invited Talk “Magneto-Optical imaging of competing order parameters in pnictide superconductor”, at the 5th Indo – Singapore Joint Symposium at IIT Delhi 20th – 22nd Feb. 2012.
33. Invited Talk "Competition between magnetism and superconductivity in an under-doped iron arsenide superconductor" at International Conference on Functional Oxides and New carbon materials, S. N. Bose Center for Basic Sciences, Kolkata, May 8th, 2012.
34. Colloquium, "Exploring the coexistence of order parameter and a search for broken symmetry in the vortex state of superconductors", Department of Physics, IIT Kanpur, Jan. 20, 2012.
35. Invited talk on Vortex Physics, to celebrate 100 years of superconductivity, arranged by Physics Society, Dept. of Physics IIT Kanpur, Nov. 12, 2011.
36. Invited talk “Magneto-optical imaging of competing order parameters in Iron Arsenide superconductor” 5th Indo – Israeli Conference, 15th – 18th Oct, Ramada Inn Resort, Cochin, Kerala, India.
37. Invited talk “Instabilities and random organization in driven vortex matter in 2H-NbS2” Current Trends in Condensed Matter (CTCM, 2011), organized by ISER Kolkata, 7 – 9th Oct, 2011.
38. Invited talk on “Varieties of organization in the flowing driven state of vortex matter”, at international conference of Vortex Matter in Superconductors, Chicago, Organizers, Argonne National Laboratory, USA. July 31st – 5th Aug, 2011.
39. Physics Colloquium at TIFR, Mumbai, on “Driving through traffic jams in superconductors”, on March, 2011.
40. Invited talk, titled “Strange magnetic properties of ferromagnetic nanowires” at Mahabaleshwar, in the ICTS (International center for theoretical studies of TataInstitute of Fundamental Research, Mumbai) organized condensed matter program, 2009 (ICMP09), between 5th – 23rd Dec. 2009. Talk was on 20th Dec. 2009.
41. Invited talk at the Dept. of Atomic Energy (DAE) – SSPS (solid state physics symposium), titled “Novel large amplitude low frequency velocity fluctuations in the elastic phase of the driven vortex matter”, Baroda on 17th Dec. 2009, at the Maharaja Sayajirao University of Baroda, Vadodara, India.
42. Physics Colloquium titled “Low frequency, large amplitude vortex velocity fluctuations and novel dynamics of the driven vortex state” at Indian Institute of Science (IISc) Bangalore, dated 4th Dec. 2009.
43. Invited talk on Large amplitude low frequency velocity fluctuations and its evolution with different phases of the driven vortex state at the 12th International workshop on vortex matter in superconductors, Sept.12-16, 2009 at the Lake Yamanaka, Yamanashi, Japan.
44. Invited talk on “Magneto-optical imaging technique: from superconductors to plasma’s” at the Condensed Matter Physics Workshop held at IIT Kanpur, India from Feb. 20 – 22nd, 2009.
45. Invited talk on “Controlling magnetic and superconducting properties at extreme scales” in the International symposium on clusters, cluster assemblies and nanomaterials (ISCANM 2009), held at HRI, Allahabad, India from Feb. 9 - 11, 2009.
46. Invited talk on “Controlling magnetic and superconducting properties at extreme scales” in the Workshop on Magnetic Nanomaterials and their Application (MNTA), at S.N. Bose Center, Kolkata, from Jan. 27-28, 2009.
47. Invited talk on “Instabilities and nonlinearities in bulk and nanopatterned superconductors” at the Indian Condensed Matter Physics Workshop, Mahabaleshwar, 9th – 22nd Dec. 2008.
48. Invited talk on “Instabilities and nonlinearities in bulk and nanopatterned superconductors” at 4th Indo-Israeli conference in Condensed Matter Physics, Nov. 3-5 2008, Zfat, Israel.
49. Talk in the Condensed Matter Seminar at Weizmann institute of Science, Israel, 6th Nov. 2008, on “Instabilities and nonlinearities in bulk and nanopatterned superconductors”.
50. Lecture Series on Superconductivity, Invited talks (4 nos.) at a School Organized on Condensed Matter Physics, at Harish Chandra Research Institute Allahabad, 5th June 2007.
51. Advances in magneto-optical imaging and imaging instabilities in vortex matter; (Invited Talk); East Asia symposium on Superconducting Electronics, IIT Delhi 14th December, 2007.
52. Instabilities in superconductors and giant magnetic fields associated with plasma’s; (Invited Talk); Department of Atomic Energy, Solid State Physics Symposium, Mysore, 27th to 31st Dec. Mangalore, 2007.
53. Lecture Series on Superconductivity, Invited talks (4 nos.) at a School Organized on Condensed Matter Physics, at Harish Chandra Research Institute Allahabad, 5th June 2007.
54. Institute Colloquium titled: Advances in magneto-optical imaging, 18th July, Tata Institute of Fundamental Research, Mumbai.
55. Instabilities in superconductors and mapping megagauss magnetic fields associated with laser plasma interactions. S. N. Bose National Center for Basic Sciences, Kolkata, 30th March, 2007.
56. Oral and Poster Presentation: Crossover in pinning regimes of the vortex solid and the peak effect at the 11th International workshop on Vortex Matter at Wroclaw, Poland, July 3rd – 8th, 2006.
57. Chaired a session: At the 11th International workshop on Vortex Matter at Wroclaw, Poland, July 3rd – 8th, 2006.
58. Poster presentation: Pinning regimes in the vortex solid and the crossover between them in single crystals of 2H-NbSe2 at the 8th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors, Dresden, July 9rd – 14th, 2006.
59. Invited talk: Instabilities in Superconductors, National conference on Emerging trends in engineering materials, Thapar Institute of Engineering and Technology, Patiala, Punjab, Feb1-3, 2007.
60. Chaired a session: At the National conference on Emerging trends in engineering materials, Thapar Institute of Engineering and Technology, Patiala, Punjab, Feb1-3, 2007.
61. Presented an invited talk at the condensed matter physics seminar organized in the dept. of Physics, IIT Kanpur, from 4th – 6th Feb, 2005. Title of my talk was on "Effect of dilute density of correlated disorder on the vortex state in superconductors: The porous vortex matter".
62. Presented an invited talk titled “Melting of heterogenous vortex matter: the vortex nanoliquid” at the xth international vortex state studies workshop (IVW-X) at the Tata Institute of Fundamental Research, Mumbai, 9th – 14th Jan, 2005.
63. Presented a tutorial titled “Magneto-optical imaging of superconductors” at a satellite tutorial session arranged prior to the the xth international vortex state studies workshop (IVW-X) at the Tata Institute of Fundamental Research, Mumbai, 7th – 9th Jan, 2005
64. Presented the Condensed Matter Physics Seminar in the Dept. of Condensed matter Physics, at the Hebrew University, Jerusalem, on 6th May. 2004. Title of my presentation was “Porous Vortex Matter”.
65. Presented the Condensed Matter Physics Seminar in the Dept. of Condensed matter Physics, at the Weizmann Institute of Science, on 28th Jan. 2004. The title of my presentation was “Porous Vortex Matter”.
66. Presented a poster on “Magneto-optical investigations into the melting of porous vortex matter in the presence of columnar defects” at the NATO Advanced Research Workshop on Magneto-optical imaging held at Oystese, Norway between 28-30 August, 2003.
67. Oral presentation (23rd June, 2003) titled “Heterogeneous melting of ‘porous’ vortex matter” at the 9th international workshop on vortex dynamics and vortex matter (ESF), Oleron Island, France 22-27 June, 2003.
68. Oral presentation (27th May, 2003) titled “Porous vortex matter” at the M2S-HTSC-VII, materials and mechanism of superconductivity and high temperature superconductors, held in Rio de Janeiro, Brazil 25-30 May, 2003.
69. Chaired the Superconductivity and Ferromagnetism session on 30th May, 2003 at the recently concluded M2S – HTSC – VII conference on materials and mechanisms of superconductivity and high temperature superconductors held at Rio de Janeiro, Brazil, between May 25 -30, 2003.
70. Phases of vortex matter in the presence of columnar defects: a magneto-optical study of BSCCO superconductors. Presented in the Condensed Matter Physics seminar at the Ben-Gurion University, Beer Sheeva, Israel, 25th Nov, 2002.
71. Phases of vortex matter in the presence of columnar defects: a magneto-optical study. Presented in the condensed matter physics seminar at ETH Zurich (laboratorium fur Festkorperphysik), Switzerland, Oct. 11, 2002.
72. Phases of vortex matter in the presence of columnar defects: a magneto-optical study. Presented at Ecole Polytechnique (Laboratoire des Solides Irradies), Palaiseau, France, Oct.7, 2002.
73. Presented a seminar in the Dept. of Condensed matter Physics and material sciences, TIFR, pertaining to Investigations into the phases of vortex matter using the differential magneto-optical technique, October, 2001.
74. Presented a colloquim at the Tata Institute of Fundamental Research on Pristine issues in condensed matter Physics via Vortex State Studies, July, 2000.
75. Oral presentation on “Peak Effect and its relation to Phases of Vortex Matter” during a panel discussion session Chaired by Gianni Blatter at the “Experimental Workshop on High Temperature Superconductors and related materials (Advanced Activities)” held between Nov.19 - Dec.6, 1998, in San Carlo de Bariloche, Argentina.
76. Oral presentation on “Phases of Vortex Matter and Transformation Amongst them” at the Colloquium for Young Physicists organized by Indian Physical Society and held at Saha Institute of Nuclear Physics, Calcutta on August 20-21, 1998.
77. Oral presentation on “Metastable states of Vortex Matter” in a Discussion Meeting on Vortices, held in T. I. F. R. on July 8, 1998.
78. Invited presentation on “Peak Effect in Superconductors: A Key to Elucidate Different Phases of Vortex Matter” at the International Conference on Superconductivity held between Dec. 15-17, 1997 in University of Hyderabad.
79. Oral presentation on “Thermodynamic Evidence for Reentrant Peak Effect in a Clean Single Crystal of 2H-NbSe2 and the Effect of Disorder and Thermomagnetic History on it’’ at the Vth International Conference on Materials and Mechanisms of Superconductivity, High Temperature Superconductors, M2S-HTSC-V, held in Beijing, China from Feb.28 to March 4, 1997 .