Concordia University

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Maiti Research Group

Dr. Maiti is currently looking for Ph.D. students. If you are interested in working in this field you are encouraged to contact him directly at saurabh.maiti@concordia.ca.

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

  • Collective phenomena
  • Spin-orbit coupled systems
  • Unconventional superconductors
  • Correlated electronic systems
  • 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.

Saurabh Maiti, Ph.D, Principal Investigator
saurabh.maiti@concordia.ca

Igor Benek Lins, M.Sc. student

Jun Hyung Bae, M.Sc. student

  1. Kung, H.-H. et al. Chiral Spin Mode on the Surface of a Topological Insulator. Phys.Rev.Lett. 119, 136802 (2017).

  2. Maiti, S., Chubukov, A. V. & Hirschfeld, P. J. Conservation laws, vertex corrections, and screening in Raman spectroscopy. Phys. Rev. B 96, 014503 (2017)

  3. Maiti, S. & Maslov, D. L. Raman scattering in a two-dimensional Fermi liquid with spin-orbit coupling. Phys. Rev. B 95, 134425 (2017).

  4. Maiti, S. & Maslov, D. L. Raman scattering in a two-dimensional Fermi liquid with spin-orbit coupling. Phys. Rev. B 95, 134425 (2017).

  5. 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).

  6. Cho, K. et al. Energy gap evolution across the superconductivity dome in single crystals of Ba1−xKxFe2As2. Science Advances 2, e1600807 (2016).

  7. Chen, X., Mishra, V., Maiti, S. & Hirschfeld, P. J. Effect of nonmagnetic impurities on S± superconductivity in the presence of incipient bands. Phys. Rev. B 94, 054524 (2016)

  8. 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).

  9. Linscheid, A., Maiti, S., Wang, Y., Johnston, S. & Hirschfeld, P. J. High Tc via Spin Fluctuations from Incipient Bands: Application to Monolayers and Intercalates of FeSe. Phys. Rev. Lett. 117, 077003 (2016).

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