PANCHANANA KHUNTIA

Assistant Professor

Email: pkhuntia@iitm.ac.in

Phone: +91-44-2257 4847

Office : HSB 119A

Quantum Materials Group Homepage

Area of Research

Experimental Condensed Matter

Research Interest

 

Exploring charge, spin, and orbital degrees of freedom of electrons in strongly correlated electron materials is at the forefront of modern condensed matter physics research. Nurturing a deeper insight into emergent behavior of strongly correlated electron systems with a view towards attaining clarity of thought and completeness of understanding. This might enormously contribute towards a better understanding of emerging physical phenomena such as spin liquids, Skyrmions, quantum criticality, unconventional superconductivity, metal insulator transition, and localization in interacting systems. Our research themes include Synthesis of emerging quantum materials, spin-glass, high Tc superconductors, spin polarized, and functional materials and their investigation using Magnetization, Specific heat, NMR, mSR, and Neutron scattering. Novel quantum materials are of special importance in view of their exotic physical phenomena stemming from the low lying collective spin excitations and understanding the magnetic properties of these quantum materials is essential as this is a prerequisite to enhance our knowledge in answering many fundamental issues of condensed matter and for potential applications. For instance, magnetization and NMR results establish a magnetic phase diagram of a novel helimagnet. NMR and magnetization results on a cubic helimagnet (Skyrmion lattice) hold special significance in understanding chiral modulations, anisotropic interactions, and spin dynamics in the Skyrmion lattice. Our comprehensive investigation reveals an unusually large modulation of hyperfine fields at the magnetic site of a disordered Heusler alloy in zero field, which would act as a precursor to the observed giant exchange bias in the field-cooled state of this class of materials. The Skyrmion lattice Chiral magnet and Heusler alloys are ideal candidates for potential applications in advanced high density magnetic data storage devices.

 

Biographical Sketch

 

Dr. Khuntia received his PhD from IIT Bombay in 2010. He carried out part of his PhD work at University of Pavia, Italy, where he was a European Union Network of Excellence Fellow. Subsequently, he moved to Max Planck Institute, Dresden, Germany as a Max Planck Fellow for his post-doctoral work (2010-2013). Later, he spent a brief stint at US Department of Energy Ames Laboratory, Iowa, USA as a visiting scientist during Jan.-Dec. 2014. He has been awarded Marie Curie International Incoming Fellowship hosted at LPS, Orsay in collaboration with Rutherford Appleton Laboratory, Oxford and Paul Scherrer Institute (PSI), Switzerland. Dr. Khuntia is an experimental condensed matter physicist and his research interests encompass many aspects of novel magnetism and superconductivity with the general themes of exotic frontier of strongly correlated electron systems including emergent physical phenomena such as quantum spin liquids, quantum phase transitions, and Skyrmions. Click here for my CV.

 

Publications: 30 [1 Nature Materials, 3 Physical Review Letters,  11 Phys. Rev. B including 6 Rapid Communications and 3 Editors Suggestions].

 

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Selected Publications

1.      Contiguous 3d and 4f Magnetism: Strongly Correlated 3d Electrons in YbFe2Al10: P. Khuntia*, P. Peratheepan, A. M. Strydom, Y. Utsumi, K.-T. Ko, K.-D. Tsuei, L. H. Tjeng, F. Steglich and M. Baenitz, Phys. Rev. Lett. 113, 216403 (2014).

2.       Design of compensated ferrimagnetic Heusler alloys for giant tunable exchange bias: Ajaya K. Nayak, Michael Nicklas, Stanislav Chadov, Panchanana Khuntia, Chandra Shekhar, Adel Kalache, Michael Baenitz, Yurii Skourski, Veerendra K. Guduru, Alessandro Puri, Uli Zeitler, and Claudia Felser, Nature Materials 14, 679 (2015).

3.        Spin Liquid State in the 3D Frustrated Antiferromagnet PbCuTe2O6: NMR and Muon Spin Relaxation Studies: P. Khuntia*, F. Bert, P. Mendels, B. Koteswararao, A. V. Mahajan, M. Baenitz, F. C. Chou, C. Baines, A. Amato, and Y. Furukawa, Phys. Rev. Lett. 116, 107203 (2016).

4. Symmetry Reduction in the Quantum Kagome Antiferromagnet Herbertsmithite; A. Zorko,  M. Herak,  M. Gomilsek, J. van Tol, M. Velazquez, P. Khuntia, F. Bert, and P.   Mendels; Phys. Rev. Lett. 118, 017202 (2017).

5.       Field tuned critical fluctuations in YFe2Al10: Evidence from magnetization, 27Al (NMR, NQR) investigations: P. Khuntia*, A.M. Strydom, L. S. Wu, M. C. Aronson, F. Steglich, and M. Baenitz, Phys. Rev. B 86, 220401 https://journals.aps.org/files/thumb_EditorsSuggestion.jpg(R) (2012) [Rapid Communications & Editors Suggestion ].

6.       Spin liquid state in the disordered triangular lattice Sc2Ga2CuO7 revealed by NMR: P. Khuntia*, R. Kumar, A. V. Mahajan, M. Baenitz, and Y. Furukawa, Phys. Rev. B 93, 140408(R) (2016) [ Rapid Communications]

Research  Group

We are always looking for bright, highly motivated, and hard working students (B.Tech/BS/MS/MSc/M.Tech/PhD) who want to dive into the world of Experimental Condensed Matter.

We also welcome highly motivated post-doc candidates with independent fellowships (CSIR/SERB-National-PDF, DST etc.). Candidates with PhD in Experimental Condensed Matter particularly expertise in the synthesis/growth of magnetic and superconducting materials will be preferred. Send me an email with your CV if you have common research interest.