Assistant Professor


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 theme includes 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 addressing 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.


In particular, we are interested in

(1)   Synthesis and Growth of Novel Quantum Materials potential to host exotic Quantum States and materials those hold immense promise for Technological Applications.

(2)   Low Temperature (as low as miliKelvin) and high field (sweep magnetic field as high as 60Tesla) Nuclear Magnetic Resonance

(3)   Advanced Thermodynamics

(4)   Muon Spin Relaxation (as low as 20 mK and in magnetic field)

(5)   Neutron Diffraction and Inelastic Neutron Scattering (as low as 50 mK and in magnetic field)

(6)   Angle-Resolved Photoemission Spectroscopy

(7)   Surface-Interface Phenomena in Quantum Materials


Publication: 36 [1 Nature Materials, 1 Nature Physics, 3 Physical Review Letters,  14 Phys. Rev. B including 6 Rapid Communications and 3 Editors Suggestions]. Click here for Full Publication list.

Google Scholar, ResearcherID



Marie Curie International Incoming Fellowship

US Department of Energy Fellowship

Max Planck Fellowship

European Union Network of Excellence Fellowship

Outstanding Reviewer, Institute of Physics, UK

Council of Scientific and Industrial Research (CSIR, India) Fellowship

MHRD, India Fellowship

National Merit Scholarship


Professional Activities


Referee for American Physical Society Journals (Phys. Rev. Lett., Phys. Rev. X, etc.)

Referee for Institute of Physics (UK) journals

Referee for American Institute of Physics.

Editorial Board member of Frontiers in Physics

Adjudicator: IOP and Elsevier Journals

Reviewer for European Commission Project Proposals

Reviewer for Russian Science Foundation

Reviewer for Department of Science and Technology, India

Member of Institute for Complex Adaptive Matter, USA


Selected Publications

1.      Gapless ground state in the archetypal quantum kagome antiferromagnet ZnCu3(OH)6Cl2: P. KhuntiaM. VelazquezQ. BarthelemyF. BertE. KermarrecA. LegrosB. BernuL. MessioA. ZorkoP. Mendels, Nature Physics (2020).


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.      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).


4.        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).


5. 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).


6.   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 (R) (2012) [Rapid Communications & Editors Suggestion ].


7.   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].


8. Bose-Einstein Condensation of Triplons in the S = 1 Tetramer Antiferromagnet : A Compound Close to a Quantum Critical Point; B. Koteswararao, P. Khuntia, R. Kumar, A.V. Mahajan, A.Yogi, M. Baenitz, Y. Skourski, and F. C. Chou, Phys. Rev. B  95, 180407(R) (2017)  [Rapid Communications].


9. 31P NMR investigations on the ferromagnetic quantum critical system YbNi4P2: R. Sarkar, P. Khuntia, C. Krellner, C. Geibel, F. Steglich, and M. Baenitz, Phys. Rev. B 85, 140409(R) (2012) [Rapid Communications].


10. Spin liquid behaviour in Jeff = 1/2 triangular lattice, T. Dey, A.V. Mahajan, P. Khuntia, M. Baenitz, B. Koteswararao and F.C. Chou, Phys. Rev. B 86, 140405(R) (2012) [Rapid Communications].


11. Sc2Ga2CuO7: A possible quantum spin liquid near the percolation threshold: R. Kumar, P. Khuntia, D. Sheptyakov, P. G. Freeman, H. M. Ronnow, B. Koteswararao, M. Baenitz, M. Jeong, and A. V. Mahaja, Phys. Rev. B 92, 180411(R) (2015) [Rapid Communications].




Autumn 2019: Physics 1010 Classical Mechanics: Physics I (Coordinator)

Spring 2019: PH1020 Electromagnetic Theory: Physics II

Autumn 2018: Physics 1010 Classical Mechanics: Physics I

Spring 2018: PH1020 Electromagnetic Theory: Physics II

Autumn 2017: Physics 1010 Classical Mechanics: Physics I

Spring 2017: PH1020 Electromagnetic Theory: Physics II

Spring 2017: PH5340: M. Tech. Solid State Physics Laboratory

Autumn 2016: PH5060 Physics Laboratory I

Autumn 2016: EP4500 Elective


Research Group

Currently, our group consists of 4 PhD students, and a couple of Post-Doctoral Fellows and undergraduates.

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

We also welcome bright, highly motivated and hardworking post-doctoral candidates with independent fellowships (CSIR/SERB-National-PDF, DST) or through IIT Madras Institute Post-doctoral Fellowship. Candidates with PhD in Experimental Condensed Matter particularly strong background 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.



We have strong collaboration with renowned Condensed Matter Physics Groups.

National Collaborators

Condensed Matter and Material Science Groups at IIT Madras

Prof. Avinash V. Mahajan, IIT Bombay

 Several Condensed Matter Groups within India

International Collaborators

Prof. Dr. Frank Steglich, Max Planck Institute, Germany

Prof. Dr. Michael Baenitz, Max Planck Institute, Germany

Prof. Dr. Manuel Brando, Max Planck Institute, Germany

Prof. Ferdinando Borsa, Univ. of Pavia, Italy and Ames Laboratory, Department of Energy, USA

Prof. Yuji Furukawa, Ames Laboratory, Department of Energy, USA

Prof. Philippe Mendels, Laboratoire de Physique des Solides, France

Prof. Fabrice Bert, Laboratoire de Physique des Solides, France

Prof. Edwin Kermarrec, Laboratoire de Physique des Solides, France

Prof. Dr.  Andrej Zorko, Jozef Stefan Institute, Slovenia


ARPES group at SOLEIL, France


Muon group at

Paul Scherrer Institute (PSI), Switzerland

Rutherford Appleton Laboratory, Oxford


Neutron Group at

Paul Scherrer Institute (PSI), Switzerland

Institut of Laue-Langevin, France



Dresden High Magnetic Field Laboratory


We also have collaboration with renowned Condensed Matter groups at national level and groups at Max Planck Institute, Oxford, Ames, Orsay, Augsburg, Brookhaven National Laboratory.


Funding Agencies
We are very thankful to the following funding agencies for their generous support in our research efforts.

IIT Madras

Department of Science and Technology

Max Planck Society

European Commission

Department of Energy, USA