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Our group El Nano
- 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
- Can we control/manipulate elementary excitations (magnon/s) in magnets via electric/magnetic field?
- Probing quasi 1D edge states of layered 2D semiconductor/insulator - 1D/2D vdW heterostructure
- Nanospintronics - Spin transport in quantum dots and 2D materials
- Hybrid 2D materials (Graphene, 2D TMDCs, etc.)
- Sample growth - Chemical Vapor Transport, Solid State Reaction
- Fabrication of devices: Lithography (e-beam, optical), Thermal evaporation, Sputtering
- Characterization:
- 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
Ms. Anudeepa Ghosh (SRF, Institute Fellow) - working on layered antiferromagnets [e-mail: anudeepa.ghosh@gmail.com], BSc - CU, MSc - BHU. Selected Publication/s: Phys. Rev. B 103, 064431 (2021)
Mr. Sujan Maity (SRF, INSPIRE) - working on magnetic 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. Selected Publication/s: ACS Nano (2021) [https://doi.org/10.1021/acsnano.1c08212]
Mr. Rahul Paramanik (JRF) - working on Microelectronic Devices. [e-mail: rahulparamanik456@gmail.com]. BSc - Burdwan University, MSc - ISM Dhanbad.
Ms. Tanima Kundu (JRF, INSPIRE) - working on magnetic semiconductors and related devices. [e-mail: tanima.kundu96@gmail.com], BSc - Burdwan University, MSc - Burdwan University.
Dr. Mainak Palit (RA1) - Raman Spectroscopy and device physics. [e-mail: mainakpalit@gmail.com], PhD - CRNN, CU. Selected Publication/s: Phys. Rev. B 104, 134437 (2021)
Dr. Bipul Kumar Mahato (RA1) - Magnon dynamics in ferro/antiferromagnets. [e-mail: bipul.kumar.mahato@gmail.com], PhD - SNBNCBS
Dr. Subrata Ghosh (RA1) - Magnetocaloric Effect - [e-mail: subrataghosh728@gmail.com], PhD - SNBNCBS
Funding:
-
Recent grant (2022 - ): CRG/2021/004334, Total cost: 49,12,920 INR (SERB) + 24,75,000 INR (Inst equipment 50% share), Title: Two-dimensional Magnets under Extreme Conditions: Manipulation of Electronic and Magnetic Order
-
Institute Funding - Seed grant, Annual grant, Individual grant
- DST-SERB grant No. ECR/2017/002037
- UGC-DAE CSR grant No. CRS-M-279
- Support from the Technical Research Centre (TRC), IACS
Collaboration:
- Theory: Prof. Arghya Tarafdar (IIT, Kharagpur), Prof. Liping Yu (Univ. of Maine), Dr. Dibyendu Dey (Univ. of Maine), Dr. Kapildeb Dolui (Univ. of Delaware), Milena Grifoni (Universität Regensburg)
- Experiment: LNCMI (Grenoble), IUC (Indore), BARC
Prof, Achintya Singha (Bose Institute), Prof. Krishnakumar SR Menon (SINP), Dr. Atindra Nath Pal (SNBNCBS), Prof. Sudip Malik (IACS), Dr. Mintu Mondal (IACS)
For discussion:
You can reach me via email: sspsdd@iacs.res.in
You will find me at Lab 116E, IACS, Main Building
Homepage Figure: Laser Scanning Confocal Microscopy image of home grown FePS3 (vdW antiferromagnet) flakes on viscoelastic substrate.

Subhadeep Datta