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Academic Experts
Academic Experts
Dr. Radha Krishna Gopal
Assistant Professor (Senior Grade)
rk.gopal@jiit.ac.in
Biography

Dr. RK Gopal is currently working as Assistant Professor (Senior Grade) in Department of Physics and Material Science & Engineering at JIIT, Noida since July 2023. He obtained his MSc. from department of physics, Institute of Science, Banaras Hindu University, and thereafter PhD from Indian Institute of Science Education and Research Kolkata (IISER-Kolkata) under the supervision of Prof. Chiranjib Mitra. After finishing his PhD, he has been a postdoctoral fellow at several national institutes including Department of Physical Sciences, Indian Institute of Science Bangalore (IISc. Bangalore), IISER-Mohali, JNCASR-Bangalore and senior research associate at Hebrew University of Jerusalem, Israel. He has been working in the field of “Topological Quantum Matter” from last 12 years.

Research Highlights

At present Dr. Gopal is working on topological quantum materials, which includes three dimensional topological semimetals and topological insulators thin film and devices in two dimensions. His particular interest is in the low-temperature quantum transport measurements to investigate the role of disorder on the electronic transport of these topological quantum materials. Recently, he has started probing ultrafast Dirac fermion dynamics and their functionalities in the spintronics and photonic devices by utilizing microwave ST-FMR, Femtosecond spectroscopy and terahertz time-domain spectroscopy in collaboration with Prof. Chiranjib Mitra, Prof. Bipul Pal and Professor Kamraju at IISER-Kolkata. Furthermore, Dr. Gopal actively collaborates with IISER-Mohali, IACS-Kolkata, RRCAT-Indore, INST-Mohali and IISc-Bangalore in diverse fields of low power spintronics and other proximity related heterostructure devices based on topological quantum materials.

Areas Of Interest
  • Topological Quantum Materials
  • Superconducting Proximity
  • Spintronics
  • Disordered Electronic Systems
Publications
  1. R. K. Gopal, Sourabh Singh, Arpita Mandal, Jit Sarkar, Chiranjib Mitra, “Topological delocalization and tuning of surface channel separation in Bi2Se2Te Topological Insulator Thin films,” Scientific Reports, volume 7, Article number: 4924, July, 2017.
  2. Soumya Mukherjee, Anjan Kumar NM, Subhadip Manna, Sambhu G Nath, Radha Krishna Gopal, Chiranjib Mitra, N Kamaraju, “Magnetic order influenced phonon and electron dynamics in MnBi2Te4 and Sb-doped MnBi2Te4 investigated by terahertz time-domain spectroscopy,” Phys. Rev. B, vol. 110, pp. 195401, November 2024
  3. RK. Gopal#, Amit Vashist#, Divya Srivastava, M. Karppinen, Yogesh Singh, “Fermi surface topology and large magnetoresistance in the topological semimetal candidate PrBi,” Phys. Rev. B, vol. 99, pp. 24513, June 2019. (# Equal First Authorship).
  4. Riddhimoy Pathak, Prabir Dutta, Ashutosh Srivastava, Divya Rawat, R.K. Gopal, Abhishek K. Singh, Ajay Soni, Kanishka Biswas, " Strong Anharmonicity‐Induced Low Thermal conductivity and High n‐type Mobility in Topological Insulator Bi1.1Sb0.9Te2S," Angew. Chem. Int. Ed. 2022, Volume 134, Issue 41, e202210783 October 10, 2022.
  5. Neha Wadehra, Ruchi Tomar, Rahul Mahavir. Varma, RK. Gopal, Yogesh Singh, Sushanta Dattagupta, S. Chakraverty,” Nature Communications, volume 11, Article number, 874, February 2020.