ANUP PRADHAN SAKHYA

Last Updated :2026/10/02

Affiliations, Positions
Research Institute for Synchrotron Radiation Science, Assistant Professor
Web Site
https://home.hiroshima-u.ac.jp/~idetas/grouphp/members.html
https://scholar.google.co.in/citations?user=yQvo_dIAAAAJ&hl=en
https://sites.google.com/view/anup-pradhan-sakhya/home
E-mail
anuppradhansakhyahiroshima-u.ac.jp
Self-introduction
My research focuses on emergent quantum phenomena in strongly correlated and topological materials, including Kondo systems, topological insulators, Dirac/Weyl and nodal-line semimetals, altermagnets, and kagome materials. I investigate their electronic structure using synchrotron-radiation ARPES (SR-ARPES), laser ARPES, and time-resolved ARPES (tr-ARPES), with polarization-dependent measurements providing access to orbital and symmetry information. Using tr-ARPES, I study ultrafast photoexcited dynamics and electron–electron and electron–lattice relaxation processes on femtosecond timescales. Experiments are complemented by first-principles DFT calculations using VASP and WIEN2k to understand band structure, orbital character, and symmetry-driven properties. Together, these approaches reveal quantum states governed by topology, symmetry, and electronic correlations.

Basic Information

Major Professional Backgrounds

  • 2025/11/01, Hiroshima University, Research Institute for Synchrotron Radiation Science, Assistant Professor
  • 2017/04, 2020/10, Tata Institute of Fundamental Research, Postdoctoral Research Fellow
  • 2021/03, 2025/07, University of Central Florida, Postdoctoral Research Fellow

Educational Backgrounds

  • Bose Institute (University of Calcutta), Department of Physics, Ph.D. (Physics), India, 2011/09, 2017/02

Academic Degrees

  • Mizoram University
  • University of Calcutta

Research Fields

  • Mathematical and physical sciences;Physics;Mathematical physics / Fundamental condensed matter physics

Research Keywords

  • Quantum Materials, Topological Materials, Strongly Correlated Systems, Kondo Physics, Weyl Semimetals, Dirac Semimetals, Altermagnets, Kagome Materials, Electronic Structure, ARPES, tr-ARPES, DFT

Affiliated Academic Societies

  • Life Member, Materials Research Society of India (Membership No. LMB2202).
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  • Life Member, Electron Microscope Society of India (Membership No. LM-934).
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  • Member, American Physical Society (2021–2025).
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Educational Activity

Course in Charge

  1. 2026, Undergraduate Education, 3Term, English Seminar for Globalization B
  2. 2026, Graduate Education (Doctoral Program) , Year, Special Research in Physics

Research Activities

Academic Papers

  1. Temperature-dependent evolution of the electronic structure in EuZn₂As₂ across the Néel transition, Physical Review B, 114(10), 105140-105140, 20260825
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  2. ★, Observation of Altermagnetic Spin-Splitting in an Intercalated Transition Metal Dichalcogenide, Nature Communications, 20260820
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  3. ★, Complex electronic topography and magnetotransport in an in-plane ferromagnetic kagome metal, 10(L051201), L051201-1-L051201-7, 20260511
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  4. ★, Diverse electronic topography in a distorted kagome metal LaTi3Bi4, Physical Review Materials (Lett.), 9(L111201), L111201-1-L111201-6, 20251117
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  5. Observation of multiple van Hove singularities and correlated electronic states in a new topological ferromagnetic kagome metal NdTi3Bi4, Physical Review B (Lett.), 112(L121104), L121104-1-L121104-7, 20250910
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  6. Electronic structure of a nodal line semimetal candidate TbSbTe, Physical Review Materials (Lett.), 9(9), 064202-1-064202-11, 20250605
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  7. ★, Spin density wave and van Hove singularity in the kagome metal CeTi3Bi4, Nature Communications, 16(4384), 1-9, 20250512
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  8. ★, Diverse electronic landscape of the novel kagome metal YbTi3Bi4, Communications Materials, 5(241), 1-7, 20241103
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  9. Revealing the intrinsic electronic structure and complex fermiology of YRu2Si2 using angle-resolved photoemission spectroscopy, Physical Review B, 110(125104), 125104-1-125104-9, 20240903
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  10. Observation of paramagnetic spin-degeneracy lifting in the EuZn2Sb2, Physical Review B, 110(045130), 045130-1-045130-6, 20240716
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  11. Complex Fermiology and Electronic Structure of Antiferromagnet EuSnP, Physical Review Materials, 8(054411), 054411-1-054411-8, 20240515
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  12. Electronic structure in a rare-earth based nodal-line semimetal candidate PrSbTe, Physical Review Materials (Lett.), 8(L041201), L041201-1-L041201-8, 20240401
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  13. Electronic structure in a transition metal dipnictide TaAs2, J. Phys. Condens. Matter., 36(075502), 1-7, 20231114
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  14. Observation of momentum-dependent charge density wave gap in a layered antiferromagnet GdTe3, Sci. Rep. (Nature), 13(18618), 20231030
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  15. Observation of flat and weakly dispersing bands in the van der Waals semiconductor Nb3Br8 with breathing kagome lattice, Physical Review B (Lett.), 108(L121404), L121404-1-L121404-6, 20230908
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  16. ★, Observation of Fermi arcs and Weyl nodes in a non-centrosymmetric magnetic Weyl semimetal, Physical Review Materials (Lett.), 7(L051202), 20230516
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  17. Observation of gapless nodal-lines in NdSbTe, Physical Review Materials, 7(044202), 044202-1-044202-9, 20230420
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  18. ★, Spectroscopic evidence of flat bands in breathing kagome semiconductor Nb3I8, Communications Materials, 3(100), 1-6, 20221216
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  19. ★, Complex electronic structure evolution of NdSb across the magnetic transition, Physical Review B, 106(235119), 235119-1-235119-6, 20221213
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  20. Observation of anisotropic Dirac cones in the topological material Ti2Te2P, Physical Review B, 106(125124), 125124-1-125124-6, 20220915
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  21. ★, Behavior of gapped and ungapped Dirac cones in the antiferromagnetic topological metal SmBi., Physical Review B, 106(085132), 085132-1-085132-6, 20220823
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  22. ★, Ultrafast relaxation of acoustic and optical phonons in a topological nodal-line semimetal ZrSiS, Communications Physics, 5(203), 1-6, 20220810
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  23. Unusual magnetic and transport properties in HoMn6Sn6 kagome magnet, Physical Review Materials, 6(064404), 064404-1-064404-7, 20220607
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  24. Energy relaxation dynamics in a nodal-line semimetal, Physical Review B, 105(144304), 144304-1-144304-11, 20220407
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  25. Observation of multiple nodal-lines in SmSbTe, Physical Review Materials, 6(L031201), L031201-1-L031201-7, 20220309
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  26. Effect of dilute magnetism in a topological insulator, Frontiers in Materials, 20211125
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  27. Anisotropically large anomalous and topological Hall effect in a kagome magnet, Physical Review B, 104(L161115), L161115-1-L161115-6, 20211026
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  28. Emergence of well-screened states in a superconducting material of the CaFe2As2 family, Physical Review B, 104(094508), 094508-1-094508-6, 20210907
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  29. ★, Evidence of non-trivial Berry phase and Kondo physics in SmBi, Physical Review Materials, 5(054201), 054201-1-054201-7, 20210518
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  30. Evolution of local structure and superconductivity in CaFe2As2, 33(19LT01), 20210421
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  31. Complex hybridization physics in CaFe2As2-a high resolution hard x-ray photoemission study, Journal of Physics: Condensed Matter, 32(33LT01), 33LT01-1-33LT01-6, 20200515
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  32. ★, Ground state anomalies in SmB6, Scientific Reports, 10(1262), 20200127
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  33. Effect of Sm doping on the structural, morphological and dielectric properties of EuFeO3 ceramics, Solid State Sciences, 91, 28-35, 20190309
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  34. ★, Narrow band gap and optical anisotropy in double perovskite oxide Sm2NiMnO6, A new promising solar cell absorber, Solar Energy Materials and Solar Cells, 193, 206-213, 20190110
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  35. ★, Investigation of concentration dependent electrical and photocatalytic properties of Mn doped SmFeO3, Materials Chemistry and Physics, 223, 78-87, 20181018
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  36. Spin- induced transition metal (TM) doped SnO2 a dilute magnetic semiconductor (DMS): A first principles study, Journal of Physics and Chemistry of Solids, 120, 104-108, 20171006
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  37. ★, Origin of the optical anisotropy and the electronic structure of Ru-based double perovskite oxides: DFT and XPS studies, RSC Advances, 7, 43531-43539, 20170908
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  38. Dielectric Relaxation and Ac Conductivity of Halide perovskites CH3NH3PbX3 (X=Br, I), Ferroelectrics, 514, 146-157, 20170920
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  39. Light induced charge transport in La2NiMnO6 based Schottky diode, 727, 238-245, 20170814
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  40. Dielectric relaxation of CH3NH3PbI3 thin film, Thin Solid Films, 638, 277-281, 20170729
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  41. ★, Electronic and optical properties of cubic SrHfO3 at different pressures: A first principles study, Materials Chemistry and Physics, 186, 620-626, 20170115
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  42. Electronic, optical and thermoelectric properties of bulk and surface (001) CuInTe2: A first principles study, Journal of Alloys and Compounds, 699, 1003-1011, 20170105
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  43. Electronic and magnetic properties of X2YZ and XYZ Heusler compounds: A comparative study of density functional theory with different exchange-correlation potentials, Materials Research Express, 3, 075022-1-075022-11, 20160729
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  44. ★, Electronic, optical and thermoelectric properties of PrMO3 (M = Al, Ga, In) from first-principles calculations, RSC Advances, 6, 59988-59997, 20160615
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  45. Band-gap engineering of La1-xNdxAlO3 (x = 0, 0.25, 0.5, 0.75, 1) perovskite using density functional theory: a modified Becke Johnson Potential study, Chinese Physics B, 25, 067101-1-067101-7, 20160420
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  46. Dielectric and impedance spectroscopic studies of Neodymium gallate, Physica B: Condensed Matter, 488, 1-7, 20160209
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  47. Electronic structure, optical dielectric constant and born effective charge of EuAlO3, Journal of Physics and Chemistry of Solids, 88, 1-7, 20150908
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  48. Dielectric Relaxation, Modulus Behaviour and Conduction Mechanism in NdAlO3 Ceramic, Journal of Electronic Materials, 44, 3801-3810, 20150528
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  49. Electronic structure and optical properties of orthorhombic and rhombohedral RAlO3 (R = Sm, Nd),, Solid State Sciences, 42, 37-44, 20150307
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  50. Electronic structure and elastic properties of ATiO3 (A = Ba, Sr, Ca) perovskites: a first principles study, Indian Journal of Pure & Applied Physics, 53, 102-109, 20140925
  51. Dielectric relaxation of samarium aluminate, Applied Physics A: Materials Science and Processing:, 114, 1097-1104, 20130615
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