Dr. Subhadeep Datta
Assistant Professor (2019 -)
School of Physical Sciences
email id: sspsdd@iacs.res.in
Phone:+91-33-2473 4971 (ext 2141)
LAB: 116E, Main building, IACS
Office: Room No. C209, Centenary Building , IACS
 

Our group El Nano

Research Interest:                                         Experimental Condensed Matter Physics
 
What are the broad research questions/issues that interest us? 
        
  • What happens to magnetism if you thin your magnet down to few atomic layer?  "”At any non-zero temperature, a one- or two-dimensional isotropic spin-S Heisenberg model with finite-range exchange interaction can be neither ferromagnetic nor antiferromagnetic."- Phys. Rev. Lett.  (1966) by N. D. Mermin and H. Wagner.  But what happens when we have "anisotropy" in the system -->Two-dimensional (2D) Magnetism - atomic layer magnetic materials (Ferro/antiferro)
  • And what happens when you stack your "thin" magnet on another  "exotic"  order! - Heterostructure with magnet and topological insulator - magnetic topological insulator
  • Nanospintronics - Spin transport in quantum dots and 2D materials
  • Hybrid 2D materials (Graphene, 2D TMDCs, etc.)
 
Experimental Technique:
  • Sample growth - Chemical Vapor Transport, Solid State Reaction
  • Fabrication of devices: Lithography (e-beam, optical), Thermal evaporation, Sputtering
  • Characterization:
Bulk magnetization - SQUID/VSM,
Electronic/magnetotransport - Low temperature electron transport (Cryostat)
Phonons - Raman Spectroscopy (low-temperature), FT-IR
Local transport - Conductive Atomic Force Microscopy (CAFM)
 
Research Facility:
Group facility:
  • Chemical Vapor Transport for sample growth [SERB]
  • Thermal Evaporator
  • Wire bonder [Seed grant]
  • Low-temperature cryostat (10 K - 300 K) [SERB]
  • Probe station and accessories for electrical transport measurement [SERB]

Central Facility, IACS:

  • Raman spectroscopy -  temperature dependent
  • e-beam lithography
  • SQUID, PPMS, Dielectric Measurement
  • Atomic Force Microscopy
  • Laser Scanning Confocal Microscope
 
Research Group:

Ms. Anudeepa Ghosh (SRF, Institute Fellow) - working on layered antiferromagnets [e-mail: anudeepa.ghosh@gmail.com], BSc - CU, MSc - BHU.

Mr. Sujan Maity (SRF, INSPIRE) - working on vdW heterostructures [e-mail: sujanmaity1994@gmail.com], BSc - WBSU, MSc - IIT Guwahati.

Mr. Bikash Das (Int. PhD) - working on layered ferromagnets and local electronic transport properties. [e-mail: bikashcgr1@gmail.com], BSc - Burdwan University, MSc - IACS

Dr. Mainak Palit (RA1) - Raman Spectroscopy and device physics. [e-mail: mainakpalit@gmail.com], PhD - CRNN, CU

Dr. Bipul Kumar Mahato (RA1) - Magnon dynamics in ferro/antiferromagnets. [e-mail: mainakpalit@gmail.com], PhD - SNBNCBS

Recently joined: Rahul Paramanik (JRF), BSc - Burdwan University, MSc - ISM Dhanbad

Funding:

  1. Institute Funding -  Seed grant, Annual grant, 
  2. DST-SERB grant No. ECR/2017/002037
  3. UGC-DAE CSR grant No. CRS-M-279
  4. Support from the Technical Research Centre (TRC), IACS

Teaching:

Electronics (Theory) - BS-MS [with Electrodynamics course] - Autumn Semester

Electronics (Theory and Practical) - Master's/Integrated Master's-Ph.D - Spring Semester

Out of Syllabus:

  • Lockdown Special -  Playing with Sensors and Data Acquisition 
  • Chua circuit: Introduction to Chaos - Demonstration [Theory: Prof. J. K. Bhattacharjee]
  • Low-power Multimeter 
  • Solving Differential Equation in Breadboard
  • Can you assess "Soil Health"?     
  • Modelling Spatiotemporal Variation of Precipitation                                           

For discussion:

You can reach me via email: sspsdd@iacs.res.in

You will find me at Lab 116E, IACS, Main Building

 

Subhadeep Datta

Assistant Professor

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