Roshan Kumar Kushwaha

In my PhD duration, I have crystal growth, sample synthesis characterization of superconducting properties in detail using bulk and microscopic technique such as MUSR along with expertise in working with collaborative environment.

My research interest focuses the exploration of unconventional superconductivity in various conventional and high entropy alloys and topological materials.

• Qualified as UGC NET-JRF, 12/31/18, All India Rank: 118.
• Junior Research Fellowship, 01/01/20, 12/31/21
• Senior Research Fellowship, 01/01/22, 12/31/24
• Best poster presentation award, 12/31/24, 4th national conference on Physics of strongly correlated electron system (PSCES 2024)

• Time-reversal-symmetry Breaking in the Superconducting State of ScS, Arushi, R. K. Kushwaha, D. Singh, A. D. Hillier, M. S. Scheurer, R. P. Singh, Phys. Rev. B, 106, L020504, 2022
• Electronic properties of Mn-type non-centrosymmetric superconductor Re5.5Ta under hydrostatic pressure, S. Mariappan, D. Bhoi, M. Krishnan, J. Gouchi, N. Shoko, P. Vajeeston, Arushi, R. K. Kushwaha, R. P. Singh, P. Vajeeston, A. Sonachalam, Y. Uwatoko, Supercond. Sci. Technol., 36, 025002, 2023
• Time-reversal symmetry breaking in superconducting low-carrier-density quasi-skutterudite Lu3Os4Ge13, A. Kataria, J. A. T. Verezhak, O. Prakash, R. K. Kushwaha, A. Thamizhavel, S. Ramakrishnan, M. S. Scheurer, A. D. Hillier, R. P. Singh, Phys. Rev. B, 107, L100506, 2023
• Superconducting properties of new hexagonal and noncentrosymmetric cubic high entropy alloys, K. Motla, Arushi, S. Jangid, P. K. Meena, R. K. Kushwaha, R. P. Singh, Supercond. Sci. Technol., 36, 115024, 2023
• Superconductivity with high upper critical field in Ta-Hf alloys, P. K. Meena, S. Jangid, R. K. Kushwaha, R. P. Singh, Phys. Rev. Materials, 7, 084801, 2023
• Evidence for nonunitary triplet-pairing superconductivity in noncentrosymmetric TaRuSi and comparison with isostructural TaReSi, S. Sharma, Sajilesh K. P., A. D. S. Richards, J. Gautreau, M. Pula, J. Beare, K. M. Kojima, S. Yoon, Y. Cai, R. K. Kushwaha, T. Agrawal, E. S. Sørensen, R. P. Singh, G. M. Luke, Phys. Rev. B, 108, 144510, 2023
• Broken time-reversal symmetry in the cubic skutterudite-like superconductor Y3Ru4Ge13, A. Kataria, J. A. T. Verezhak, O. Prakash, R. K. Kushwaha, A. Thamizhavel, S. Ramakrishnan, M. S. Scheurer, A. D. Hillier, R. P. Singh, Phys. Rev. B, 108, 214512, 2023
• Unconventional properties of non-centrosymmetric superconductor Re8NbTa, R. K. Kushwaha, Arushi, S. Sharma, S. Srivastava, P. K. Meena, M. Pula, J. Beare, J. Gautreau, A. D. Hillier, G. M. Luke, R. P. Singh, Phys. Rev. B, 109, 174518, 2024, (Editors' suggestion)
• Superconductivity in Rhenium-based binary alloys: Re7X3 (X = Nb, Ta, Ti, Zr, Hf), R. K. Kushwaha, P. K. Meena, S. Jangid, P. Manna, S. Srivastava, T. Kumari, S. Sharma, P. Mishra, R. P. Singh, arXiv, 2402.07580, 2024, [Under review in Supercond. Sci. Technol.]
• Time-reversal symmetry breaking superconductivity in HfRhGe: a noncentrosymmetric Weyl semimetal, Sajilesh. K. P*., R. K. Kushwaha*, D. Samanta*, T. Tula, P. K. Meena, S. K. Srivastava, D. Singh, P. K. Biswas, A. Kanigel, A. D. Hillier, S. K. Ghosh, R. P. Singh, Advanced Materials, 2024, [*Equal contribution]
• Superconductivity with high upper critical field in an equiatomic high entropy alloy Sc-V-Ti-HfNb, S. Jangid, P. K. Meena, R. K. Kushwaha, S. Srivastava, P. Manna, P. Mishra, S. Sharma, R. P. Singh, Appl. Phys. Lett., 124, 192602, 2024
• Observation of superconductivity in a nontrivial Z2 approximant quasicrystal, P. K. Meena, R. Verma, Arushi, S. Jangid, R. K. Kushwaha, R. Stewart, A. D. Hillier, B. Singh, R. P. Singh, arXiv, 2501.00554, 2024
• Time-reversal symmetry breaking in a Re-based kagome lattice superconductor, Manasi Mandal, A. Kataria, P. K. Meena, R. K. Kushwaha, D. Singh, P. K. Biswas, R. Stewart, A. D. Hillier, R. P. Singh, Phys. Rev. B, 111, 054511, 2025
• Stabilization of Ambient Pressure Rocksalt Crystal Structure and High Critical Field Superconductivity in ReC via Mo and W Substitution, P. K. Meena, S. Jangid, R. K. Kushwaha, P. Manna, S. Srivastava, S. Sharma, P. Mishra, R. P. Singh, Superconductor Science and Technology, 2025
• Pressure-induced superconducting and structural properties of noncentrosymmetric LaPtGe, Sathiskumar Mariappan, Dilip Bhoi, P. K. Meena, Boby Joseph, R. P. Singh, Arumugam Sonachalam, Govindaraj Lingannan, R. K. Kushwaha, Yoshiya Uwatoko, Phys. Rev. B, 111, 144515, 2025
• Topological superconductivity in hourglass Dirac chain metals (Ti, Hf)IrGe, P. K. Meena, S. Samanta, S. Jangid, R. K. Kushwaha, R. Stewart, A. D. Hillier, S. K. Gosh, R. P. Singh, arXiv, 2502.07475, 2025
• High critical field superconductivity in a 3d dominated lightweight equiatomic high entropy alloy, S. Jangid, P. K. Meena, R. K. Kushwaha, S. Srivastava, P. Manna, S. Sharma, P. Mishra, R. P. Singh, arXiv, 2501.01887, 2025

• Single Crystal growth
• Non-centrosymmetric superconductors
• Unconventional superconductors
• High-entropy alloys
• Time-reversal symmetry breaking
• Muon spin rotation/relaxation

Indian Institute of Science Education and Research Bhopal