Saurabh Maiti
Assistant Professor, Physics
Email: saurabh.maiti@concordia.ca
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
Current members
Igor Benek Lins
Ph.D. student
Email: igor.beneklins@concordia.ca
Jun Hyung Bae
Ph.D. student
Email: junhyung.bae@concordia.ca
Colton Lelievre
B.Sc. student
Jonathan Discenza
B.Sc. student
Joshua Emmerson
B.Sc. student
Past members
Jeremie Mede Moussa
B.Sc. student
Email: jeremie.concordiaphysics@gmail.com
- 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
- Maiti, S. & Sedrakyan, T. Fermionization of bosons in a flat band. Phys. Rev. B 99, 174418 (2019). doi:10.1103/PhysRevB.99.174418
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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). doi:10.1103/PhysRevB.94.054524
- Maiti, S., Zyuzin, V. & Maslov, D. L. Collective modes in two- and three-dimensional electron systems with Rashba spin-orbit coupling. Phys. Rev. B 91, 035106 (2015). doi:10.1103/PhysRevB.91.035106
- Maiti, S., Sigrist, M. & Chubukov, A. Spontaneous currents in a superconductor with s+is symmetry. Phys. Rev. B 91, 161102 (2015). doi:10.1103/PhysRevB.91.161102
- Maiti, S. & Maslov, D. L. Intrinsic Damping of Collective Spin Modes in a Two-Dimensional Fermi Liquid with Spin-Orbit Coupling. Phys. Rev. Lett. 114, 156803 (2015). doi:10.1103/PhysRevLett.114.156803
- Maiti, S. & Hirschfeld, P. J. Collective modes in superconductors with competing s- and d-wave interactions. Phys. Rev. B 92, 094506 (2015). doi:10.1103/PhysRevB.92.094506
- Chen, X., Maiti, S., Linscheid, A. & Hirschfeld, P. J. Electron pairing in the presence of incipient bands in iron-based superconductors. Phys. Rev. B 92, 224514 (2015). doi:10.1103/PhysRevB.92.224514
- VanGennep, D., Maiti, S., Graf, D., Tozer, S. W., Martin, C., Berger, H., Maslov, D. L. & Hamlin, J. J. Pressure tuning the Fermi level through the Dirac point of giant Rashba semiconductor BiTeI. Journal of Physics: Condensed Matter 26, 342202 (2014). doi:10.1088/0953-8984/26/34/342202
- Maiti, S. & Chubukov, A. V. Superconductivity from repulsive interaction. in Lectures on the Physics of Strongly Correlated Systems XVII (eds. Avella, A. & Mancini, F.) 1550, 3–73 (2013). ISBN 978-0-7354-1175-3
- Fernandes, R. M., Maiti, S., Wölfle, P. & Chubukov, A. V. How Many Quantum Phase Transitions Exist Inside the Superconducting Dome of the Iron Pnictides? Phys. Rev. Lett. 111, 057001 (2013). doi:10.1103/PhysRevLett.111.057001