Magnetism And Spin Technologies Lab
-exploring the unknown...
Magnetism and Spin Technologies (MAST) Lab focuses on exploring the unknown in the realm of nano-electronics and spintronics, especially for application in conventional non-volatile memory and advanced technologies such as neuromorphic and quantum technologies. We strive to be the 'mast' in the ship out to explore and challenge the boundaries of what we know and in the process develop advanced memory technologies. MAST lab is led by Dr. Tanmay Dutta.
Dr Tanmay is an engineer by training, teacher by passion, and researcher by profession. His interest lies in the fields of advanced memory and computing technologies. Working at the forefront/confluence of semiconductors, nanotechnology processes and material development he persistently strives to push the frontier of data storage and computing technologies. As an Assistant Professor, he balances his demanding research commitments with his true love - sparking curiosity and interest in young minds through his teaching and mentoring.
Dr. Tanmay has almost a decade of experience in developing thin-film and nanotechnology solutions for future data storage (memory) and computing/ processing, energy and biomedical applications.
His work has focused on technologies such as:
● Spintronics devices- spin based electronics and study of magnetic interactions
● Hard disk drives (HDD): Heat assisted magnetic recording (HAMR), bit patterned media (BPM), ex-change coupled composite media (ECC).
● Magnetic random access memory (MRAM): Spin transfer torque (STT) and Spin orbit torque (SOT) devices, magnetic tunnel junctions (MTJ).
● Race-track memory: Domain wall based and skyrmion based.
● Development of functional magnetic nanoparticles for biomedical applications.
● Study of dielectric materials for passivated contacts in photovoltaic (PV) technology.
Current research interests:
Non-volatile memory, Spintronics, MRAM (SOT,STT), Race-track memory, HDD (Hard disk drives), SSD (Solid state drives), Quantum computing, Neuromorphic memory.
Current and Upcoming Projects
Interlayer exchange coupling based robust, non-volatile, scalable and reconfigurable PUF hardware (funded)
Artificial synapse for brain-inspired neuromorphic electronics hardware based on skyrmion-domain (funded)
Study and optimization of stray field in magnetic tunnel junction (MTJ) (funded)
Study and development of chirality selective spintronic thin-films and active devices for biochemical-electronic interface applications
Oğuz Yıldırım, Riccardo Tomasello, Yaoxuan Feng, Giovanni Carlotti, Silvia Tacchi, Pegah Mirzadeh Vaghefi, Anna Giordano, Tanmay Dutta, Giovanni Finocchio, Hans J Hug, Andrada-Oana Mandru, Tuning the Coexistence Regime of Incomplete and Tubular Skyrmions in Ferromagnetic/Ferrimagnetic/Ferromagnetic Trilayers, ACS Applied Materials & Interfaces, 14, 34002 2022.
Mohammad SM Saifullah, Mohamed Asbahi, Darren CJ Neo, Zackaria Mahfoud, Hui Ru Tan, Son Tung Ha, Neeraj Dwivedi, Tanmay Dutta, Surani bin Dolmanan, Zainul Aabdin, Michel Bosman, Ramakrishnan Ganesan, Sudhiranjan Tripathy, David G Hasko, Suresh Valiyaveettil, Patterning at the resolution limit of commercial electron beam lithography, Nano Letters, vol. 22, 7432, 2022.
N. Dwivedi, A. K. Ott, K. Sasikumar, C. Dou, R. J. Yeo, B. Narayanan, U. Sassi, D. De Fazio, G. Soavi, T. Dutta, SKRS Sankaranarayanan, A. C. Ferrari, C. S. Bhatia, Graphene overcoats for ultra-high storage density magnetic media, Nat. Communications, 12, 2854, 2021.
G. Kaur, T. Dutta, R. Sridharan, Z. Xin, A. Danner, R. Stangl, Can interface charge enhance selectivity in tunnel layer passivated contacts? Using negatively charged aluminium oxide capped with dopant free PEDOT or boron doped polysilicon, Sol. Energ. Mat. Sol. Cells, vol. 221, 110857, 2021.
J. A. Garlow, S. D. Pollard, M. Beleggia, T. Dutta, H. Yang, and Y. Zhu, Quantification of Mixed Bloch-Néel Topological Spin Textures Stabilized by the Dzyaloshinskii-Moriya Interaction in Co/Pd Multilayers, Physics Review Letters, vol. 122, pp 237201, 2019.
R. Ramaswamy*, T. Dutta*, S. Liang, G. Yang, M. S. M. Saifullah, H. Yang, Spin orbit torque driven magnetization switching with sputtered Bi2Se3 spin current source, Journal of Physics D: Applied Physics, vol. 52, pp 224001, 2019. (* share equal 1st authorship)
T. Dutta, S. N. Piramanayagam, M. S. M. Saifullah, and C. S. Bhatia, and H. Yang, Exchange coupled CoPt/FePtC media for heat assisted magnetic recording, Applied Physics Letters, vol. 112, no. 14, pp. 142411, 2018.
T. Dutta, S. Pathak, M. Asbahi, K. Celik, J. M. Lee, P. Yang, M. S. M. Saifullah, A. Oral, C. S. Bhatia, J. Cha, J. Hong, and H. Yang, Non-destructive patterning of 10 nm magnetic island array by phase transformation with low-energy proton irradiation, Applied Physics Letters, vol. 111, no. 15, pp. 152401, 2017.
R. Ramaswamy, X. Qiu, T. Dutta, S. D. Pollard, and H. Yang, Hf thickness dependence of spin-orbit torques in Hf/CoFeB/MgO heterostructures, Applied Physics Letters, vol. 108, no. 20, pp. 202406, 2016.