Maiti Research Group

The Maiti Research Group focuses on the collective phenomena and quantum phases in low-dimensional systems. More specifically, our research interests include:

  • Collective phenomena,
  • Spin-orbit coupled systems,
  • Unconventional superconductors,
  • Correlated electronic systems and
  • Gauge fields in lattice systems.

We are interested in studying low-dimensional systems like the lattice of Graphene, Kagome etc. (which are strictly 2D); and Fe and Cu based superconductors (which are quasi-2D). These systems can host a range of quantum phases like spin-liquid, unconventional superconductivity, magnetism, density waves, or any combination of them. We are also interested in understanding the role of various gauge fields in systems with a degenerate energy excitation spectrum.

Accounting for electronic correlations, we also look for unique signatures of the collective phenomena in such quantum phases. Some examples of such signatures are chiral-spin waves in spin-orbit coupled systems that can have potential application in Spintronics/Magnonics; and collective modes in superconductors that can provide insight into the pairing mechanism of high-Tc superconductors. We also work on computing experimentally observable quantities (like Raman, optical absorption spectrum) that can help detect these signatures and track the boundaries between various phases.

Principal investigator

Saurabh Maiti
Saurabh Maiti

Assistant Professor, Physics
Email: saurabh.maiti@concordia.ca

Current members

Surajit Sarkar
Surajit Sarkar

Postdoctoral fellow
Email: surajit.sarkar@concordia.ca

Igor Benek-Lins
Igor Benek-Lins

Ph.D. student
Email: igor.beneklins@concordia.ca

Jun Hyung Bae
Jun Hyung Bae

Ph.D. student
Email: junhyung.bae@concordia.ca

Mojdeh Saleh
Mojdeh Saleh

Ph.D. student
Email: mojdeh.saleh@concordia.ca

Rami Zemouri
Rami Zemouri

B.Sc. student
Email: rami.zemouri@concordia.ca

Past members

  • Jonathan Discenza, B.Sc. student
  • Colton Lelievre, B.Sc. student
  • Joshua Emmerson, B.Sc. student
  • Jeremie Mede Moussa, B.Sc. student
  1. Maslov D. L., Kumar A., and Maiti S., Collective spin modes in Fermi liquids with spin-orbit coupling, invited review for Journal of Experimental and Theoretical Physics for the 95th birthday of Prof. Emmanuel I. Rashba, Journal of Experimental and Theoretical Physics, 135, 549 (2022). doi:10.1134/S1063776122100077
  2. Kumar A., Maiti S., and D. Maslov D.L., Zero-field spin resonance in graphene with proximity-induced spin-orbit coupling, Phys. Rev. B 104, 155138 (2021). doi:10.1103/PhysRevB.104.155138
  3. Chen X., Maiti S., Fernandes R.M., and Hirschfeld P.J., Nematicity and Superconductivity: Competition vs. Cooperation, Phys. Rev. B 102, 184512 (2020). doi:10.1103/PhysRevB.102.184512
  4. Maiti, S. & Sedrakyan, T. A. Composite fermion state of graphene as a Haldane-Chern insulator. Phys. Rev. B 100, 125428 (2019). doi:10.1103/PhysRevB.100.125428
  5. Maiti, S. & Sedrakyan, T. Fermionization of bosons in a flat band. Phys. Rev. B 99, 174418 (2019). doi:10.1103/PhysRevB.99.174418
  6. Böhm, T., Kretzschmar, F., Baum, A., Rehm, M., Jost, D., Hosseinian Ahangharnejhad, R., Thomale, R., Platt, C., Maier, T. A., Hanke, W., Moritz, B., Devereaux, T. P., Scalapino, D. J., Maiti, S., Hirschfeld, P. J., Adelmann, P., Wolf, T., Wen, H.-H. & Hackl, R. Microscopic origin of Cooper pairing in the iron-based superconductor Ba1−xKxFe2As2. npj Quantum Materials 3, 48 (2018). doi:10.1038/s41535-018-0118-z
  7. Maiti, S. & Maslov, D. L. Raman scattering in a two-dimensional Fermi liquid with spin-orbit coupling. Phys. Rev. B 95, 134425 (2017). doi:10.1103/PhysRevB.95.134425
  8. Maiti, S., Chubukov, A. V. & Hirschfeld, P. J. Conservation laws, vertex corrections, and screening in Raman spectroscopy. Phys. Rev. B 96, 014503 (2017). doi:10.1103/PhysRevB.96.014503
  9. Kung, H.-H., Maiti, S., Wang, X., Cheong, S.-W., Maslov, D. L. & Blumberg, G. Chiral Spin Mode on the Surface of a Topological Insulator. Phys. Rev. Lett. 119, 136802 (2017). doi:10.1103/PhysRevLett.119.136802
  10. Maiti, S., Imran, M. & Maslov, D. L. Electron spin resonance in a two-dimensional Fermi liquid with spin-orbit coupling. Phys. Rev. B 93, 045134 (2016). doi:10.1103/PhysRevB.93.045134
  11. Maiti, S., Maier, T. A., Böhm, T., Hackl, R. & Hirschfeld, P. J. Probing the Pairing Interaction and Multiple Bardasis-Schrieffer Modes Using Raman Spectroscopy. Phys. Rev. Lett. 117, 257001 (2016). doi:10.1103/PhysRevLett.117.257001
  12. Linscheid, A., Maiti, S., Wang, Y., Johnston, S. & Hirschfeld, P. J. High T_c via Spin Fluctuations from Incipient Bands: Application to Monolayers and Intercalates of FeSe. Phys. Rev. Lett. 117, 077003 (2016). doi:10.1103/PhysRevLett.117.077003
  13. Lin, S.-Z., Maiti, S. & Chubukov, A. Distinguishing between s+id and s+is pairing symmetries in multiband superconductors through spontaneous magnetization pattern induced by a defect. Phys. Rev. B 94, 064519 (2016). doi:10.1103/PhysRevB.94.064519
  14. Cho, K., Kończykowski, M., Teknowijoyo, S., Tanatar, M. A., Liu, Y., Lograsso, T. A., Straszheim, W. E., Mishra, V., Maiti, S., Hirschfeld, P. J. & Prozorov, R. Energy gap evolution across the superconductivity dome in single crystals of (Ba1-xKx)Fe2As2. Science Advances 2, (2016). doi:10.1126/sciadv.1600807
  15. Chen, X., Mishra, V., Maiti, S. & Hirschfeld, P. J. Effect of nonmagnetic impurities on superconductivity in the presence of incipient bands. Phys. Rev. B 94, 054524 (2016). doi:10.1103/PhysRevB.94.054524
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