Events

[SEMINAR]: DETECTION AND MANIPULATION OF MAGNETISM IN A MICRON-SIZED FLAKE

Speaker: Dr. Subhadeep Datta, Associate Professor, School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata.

Title: “Detection and Manipulation of Magnetism in a Micron-sized Flake”

Date: Friday, September 06th , 2024 – Time: 11 AM

Tea & Coffee: 10:30 AM

Venue: CeNSE Seminar Hall

Abstract:

Magnetic ordering in 2D layered materials can be ferromagnetic, antiferromagnetic, or exhibit more complex spin textures depending on the anisotropy. The detection and study of these magnetic properties are crucial for applications in spintronics, quantum computing, and other advanced technologies. In our study, Raman spectroscopy has been used to detect magnetic ordering in materials like FePS₃, where certain Raman-active modes shift in energy due to magnetic interactions. Controlling interfacial spin-phonon coupling in stacked heterostructure provides a new route to manipulate the magnetic order. Microelectronic circuits with magnetic insulators can be applied for the electric-field-controlled detection of elementary excitations.

Biography:

Dr. Subhadeep Datta is dealing with the synthesis, device fabrication and characterisation of 2D magnets and the use of nanoelectronic circuits as probing routes of elementary excitations. Special attention is on using the characteristic phonon modes of the 2D magnetic lattice to decode the magnon-phonon hybridization. Experience in nanoscale lithography and mesoscopic transport through 1D/2D systems during his PhD (@ CNRS, Grenoble; 2007-11) and subsequent post-doctoral stints (@ ENS, Paris and NUS) has been beneficial to develop the current research activity. Subhadeep now aims to develop fundamental ideas of novel 2D magnonic devices for future data communication.

Host Faculty: Prof. Chandan Kumar

Date: Friday, 6 September 2024 – 11:00am