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Tanmay Dutta

Dr. Tanmay Dutta

Assistant Professor

Key Research Areas : Non-volatile memory, Spintronics, MRAM (SOT,STT), Race-track memory, HDD (Hard disk drives), SSD (Solid state drives), Quantum computing, Neuromorphic memory.

Phone No: +91-361-2583285 (O) | Email: tanmay.dutta@iitg.ac.in| Room No: Maths Extn. Building, Room 408

Personal Website

Empa (Swiss Federal Laboratories for Mat. Science and Technology), ETH Zurich Domain                                MAY 2019 – DEC 2021
Binning and Rohrer Nanotechnology Center, IBM Research, Zurich
Marie Curie Postdoctoral Research Fellow
 
National University of Singapore (NUS), Kent Ridge, Singapore                                                                              AUG 2014 – JUL 2018
Institute of Materials Research and Engineering (IMRE), A*STAR, Singapore
Ph.D., Electrical and Computer Engineering                             
                        

National Institute of Technology Durgapur (NITD), Durgapur, India                                                                         JUL 2007 – JUN 2011
Bachelor of Technology, Electrical Engineering (First class, honors)    
 

IIT Guwahati, EEE Department and Centre for Nanotechnology (CFN)                                                                        JAN 2022 – PRESENT

Assistant Professor

  • Research on spintronic devices for future Memory technologies including MRAM and n neuromorphic computing
  • Research on spintronic materials and thin-films for energy harvesting, biomedical and optoelectronic applications
  • Research on spintronic devices devices for PUF hardware

Empa (Swiss Federal Laboratories for Mat. Science and Technology), ETH Domain                                                 MAY 2019 – DEC 2021
Binning and Rohrer Nanotechnology Center, IBM Research, Zurich
Marie Curie Postdoctoral Research Fellow

  • Skyrmionic memory: Designing ferrimagnet material systems to achieve pinning free, high-density, ultra-small skyrmions capable of ultra-fast transport.
  • Bio-compatible nanoparticles: Developing functional bio-compatible magnetic nanoparticles for controlled hyperthermia. 

Department of ECE, National University of Singapore (NUS), Singapore                                                                     AUG 2018 – APR 2019
Teaching Assistant/Fellow                                

  • Designed and taught modules 'Basic Electrical Engineering', 'Circuits and Systems', 'Computer Architecture' and for undergraduate students and also designed/conducted laboratory experiments and tutorial sessions for the students in the Department of Electrical and Computer Engineering (ECE), NUS. 

National University of Singapore (NUS), Singapore                                                                                                        AUG 2014 – JUL 2018
Institute of Materials Research and Engineering (IMRE), A*STAR, Singapore
Research Scholar                                                                                              

  • Magnetic thin films for HDDs: Developed alloy and multilayer magnetic thin films for advanced magnetic recording technology (for heat assisted magnetic recording, HAMR and bit patterned media, BPM) under the supervision of Prof. C. S. Bhatia and Prof. Hyunsoo Yang. 
  • MRAM (SOT and STT): Fabricated and optimized micro-sized p-MTJ for MRAM applications, aimed at ensuring higher thermal stability. Both SOT and STT based devices were studied with Prof. Hyunsoo Yang.
  • Topological material: Optimization and study of sputter deposited topological insulator (TI) such as Bi2Se3 for high spin current generation in future spintronics applications.
  • Dielectric solar materials: Studied properties of ultra-thin (< 2 nm) dielectric SiOx, AlOx, TiOx and SiNx with high fixed charge density for application in passivated contacts.
  • Tribological studies: Study of tribological properties in graphene and ultra-thin carbon films for HDDs and tape applications.
  • Equipment maintenance: Over 8 years of experience in maintaining thin film deposition tools, and clean room facilities.

Graduate Teaching Assistant (part time)

  • Assisted in conducting laboratory sessions, organizing tutorials and student assessment for different modules in the Department of Electrical and Computer Engineering in National University of Singapore.

EE 511N Nano-devices: Physics and Modelling (Theory)

EE 618 Spintronics and Memory Technologies (Theory)

EE 512 Analog IC Design (Theory)

EE 517 VLSI Lab II (Analog IC Laboratory)

HT503 Introduction to Biomedical Electronics and Instrumentation (Part)

NT - 601 Nano Device: Fabrication, Production & Patent Writing (Part)

EE 6XX Semiconductor material and device characterization  (Theory)

 

 

 

Journal Publications

1. 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 , vol.14 ,pp.34002 [2022]. , https://doi.org/10.1021/acsami.2c06608

2. 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 ,pp.7432 [2022]. , https://doi.org/10.1021/acs.nanolett.2c02339

3. 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 , vol.12 ,pp.2854 [2021]. , https://doi.org/10.1038/s41467-021-22687-y

4. 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 ,pp.110857 [2021]. , https://doi.org/10.1016/j.solmat.2020.110857

5. G. Kaur,  Z. Xin, T. Dutta, R. Sridharan, R. Stangl, A. Danner, "Improved silicon oxide/polysilicon passivated contacts for high efficiency solar cells via optimized tunnel layer annealing", Sol. Energ. Mat. Sol. Cells , vol.217 ,pp.110720 [2020]. , https://doi.org/10.1016/j.solmat.2020.110720

6. MSM Saifullah, M. Asbahi, M. B-K Kiyani, S. S. Liow, S. B. Dolmanan, A. M.e Yong, E. Ong, A. I. Saifullah, H. R. Tan, N. Dwivedi, T. Dutta, R. Ganesan, S. Valiyaveettil, K. Chong, S. Tripathy, "Room Temperature Patterning of Nanoscale MoS2 Under an Electron Beam", ACS Applied Materials & Interfaces , vol.12 ,pp.16772-16781, [2020]. , https://doi.org/10.1021/acsami.9b22229

7. N. Dwivedi, T. K Patra, J-B Lee, R. J. Yeo, S. Srinivasan, T. Dutta, K. Sasikumar, C. Dhand, S. Tripathy, M. S. M. Saifullah, A. J. Danner, SAR Hashmi, A. K. Srivastava, J-H Ahn, S. K. R. S. Sankaranarayanan, H. Yang, C. S. Bhatia, "Slippery and Wear Resistant Surfaces Enabled by Interface Engineered Graphene", Nano Lett. , vol.20 ,pp.905-917, [2020]. , https://doi.org/10.1021/acs.nanolett.9b03650

8. 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 Multilayer", Physics Review Letters , vol.122 ,pp.237201 [2019]. , https://doi.org/10.1103/PhysRevLett.122.237201

9. R. Ramaswamy*, T. Dutta*, S. Liang, G. Yang, M. S. M. Saifullah, H. Yang (* share equal 1st authorship), "Spin orbit torque driven magnetization switching with sputtered Bi2Se3 spin current source", Journal of Physics D: Applied Physics , vol.52 ,pp.224001 [2019]. , https://doi.org/10.1088/1361-6463/ab0b96

10. 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 ,pp.142411 [2018]. , https://doi.org/10.1063/1.5012815

11. T. Dutta, N. Dwivedi, M. S. M. Saifullah, H. Yang, C. S. Bhatia and S. N. Piramanayagam, "Nitrogen plasma treatment in two-step temperature deposited FePt bilayer media", Journal of Magnetism and Magnetic Materials , vol.461 ,pp.6-13, [2018]. , https://doi.org/10.1016/j.jmmm.2018.04.031

12. S. Srivastava, A. Chen, T. Dutta, R. Ramaswamy, J. S. Son, M. S. M. Saifullah, K. Yamane, K. L. Teo, Y. P. Feng and H. Yang, "Effect of (CoxFe1-x)B20 Composition on the Magnetic Properties of the Free Layer in Double-Barrier Magnetic Tunnel Junctions", Physical Review Applied , vol.2 ,pp.024031 [2018]. , https://doi.org/10.1103/PhysRevApplied.10.024031

13. M. S. M. Saifullah, M. Asbahi, M. Binti-Kamran Kiyani, S. Tripathy, E. A. H. Ong, A. Ibn Saifullah, H. R. Tan, T. Dutta, R. Ganesan, S. Valiyaveettil, and K. S. L. Chong, "Direct Patterning of Zinc Sulfide on a Sub-10 Nanometer Scale via Electron Beam Lithography", ACS Nano , vol.11 ,pp.9920-9929, [2017]. , http://dx.doi.org/10.1021/acsnano.7b03951

14. T. Dutta, S. N. Piramanayagam, M. S. M. Saifullah, and C. S. Bhatia, "High switching efficiency in FePt exchange coupled composite media mediated by MgO exchange control layers", Applied Physics Letters , vol.111 ,pp.042405 [2017]. , https://doi.org/10.1063/1.4996366

15. 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 ,pp.152401 [2017]. , https://doi.org/10.1063/1.4998670

16. T. Dutta, S. Kundu, M. S. M. Saifullah, H. Yang, S. N. Piramanayagam, and C. S. Bhatia, "Two-step temperature deposited FePt bilayer for tunable magnetic properties", Journal of Physics D: Applied Physics , vol.48 ,pp.445007 [2016]. , http://dx.doi.org/10.1088/0022-3727/48/44/445007

17. 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 ,pp.202406 [2016]. , https://doi.org/10.1063/1.4951674

Conference Publications

1. A. Mandru, O. Yildirim, R. Tomasello, Y. Feng, P. Mirzadeh Vaghehfi, T. Dutta, G. Carlotti, S. Tacchi, G. Finocchio and H.J. Hug, "Tuning the Density of Incomplete and Tubular Skyrmions in Ferro/ferri/ferromagnetic Trilayers", MMM-INTERMAG Conference, New Orleans, USA [2022].

2. T. Dutta et. al, "Robust and tunable rare-earth ferrimagnetic systems for dense, small and high-mobility skyrmions at room temperature ", MMM-INTERMAG Conference, New Orleans, USA, , IEEE [2022].

3. P. Mirzadeh Vaghehfi, A. Mandru, O. Yildirim, T. Dutta and H.J. Hug,, "The Effect of RKKY Exchange Coupling Through Heavy Metal Interlayers on Future Skyrmionic Devices", Intermag, Lyon, France [2021].

4. G. Kaur, T. Dutta, Z. Xin, Z. P. Ling, M. J. Naval, MSM Saifullah, R. Stangl, A. Danner, "Ultra-thin LPCVD SiNx/n+poly-Si passivated contacts – A possibility? ", IEEE 46th Photovoltaic Specialists Conference (PVSC) , IEEE [2019].

5. T. Dutta, S. N. Piramanayagam, M. S. M. Saifullah, C. S. Bhatia, Hyunsoo Yang, "CoPt capped FePtC based ECC media for HAMR ", Intermag, Singapore , IEEE [2018].

6. T. Dutta, M. S. M. Saifullah, S. N. Piramanayagam and C.S. Bhatia, "High switching efficiency in FePt bilayer media with exchange control layers", Intermag, Dublin , IEEE [2017].

7. T. Dutta, Shreya Kundu, M. S. M. Saifullah, Yang Hyunsoo, S. N. Piramanayagam and C.S. Bhatia, "Tuning properties of two-step temperature deposited FePt media", IMRE Scientific Research Forum (ISRF) Singapore. [2015].

8. T. Dutta, Shreya Kundu, M. S. M. Saifullah, Yang Hyunsoo, and C.S. Bhatia, "Probing the effect of two-step temperature deposition on topographical properties of FePt media", The Magnetic Recording Conference (TMRC) , Minnesota , IEEE [2015].

9. T. Dutta, Shreya Kundu, M. S. M. Saifullah, Yang Hyunsoo, and C.S. Bhatia, "Tunable high coercivity FePt bilayer structure for HAMR application ", Intermag, Beijing , IEEE [2015].

  • Winner at Falling Walls Lab Berlin 2020 and recognized as a global emerging talent in 2020.
  • Marie Curie Research Fellowship/grant 2019 (EU Horizon 2020)

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Department of Electronics and Electrical Engineering Indian Institute of Technology Guwahati Guwahati, Assam, India.PIN-781 039. Email: eeeoff@iitg.ac.in Telehone: +91-361-2582550 Fax: +91-361-2582542 +91-361-2690762

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