S M YUSUF

Bhabha Atomic Research Centre, Mumbai

S M Yusuf is currently Outstanding Scientist and Head of Solid State Physics Division of BARC, Mumbai. He is also a Professor at Homi Bhabha National Institute (HBNI), and Dean (Students’ Affair), HBNI-BARC. Additionally, he serves as the Vice-President of Indian Physics Association, the Indian Crystallographic Association, and the President of the Neutron Scattering Society of India. He obtained his PhD in physics from the University of Mumbai, was a post-doctoral fellow at Argonne National Laboratory, USA, and a visiting scientist at the Institute of Materials Science, Spain. His expertise is in the area of advanced magnetic materials and neutron scattering. He has received many awards including D. Sc (Honorary) in 2018, MRSI-ICSC Superconductivity & Materials Science Annual Prize, DAE Homi Bhabha Science & Technology Award, MRSI Medal, DAE-SRC Outstanding Research Investigator Award, etc. He was elected as a Fellow of the Indian Academy of Sciences in 2017.

S M YUSUF

SESSION 1B: Inaugural lectures by Fellows

Dhananjai Pandey, BHU, Varanasi

Low-dimensional spin systems and quantum magnetism

Low dimensional magnetic systems have been of great interest due to their novel, unconventional, and complex electronic and magnetic properties. Spin systems with reduced space dimension can show magnetic frustrations. Frustrated quantum magnetic systems provide a rich playground for interplay of competing exchange interactions and quantum fluctuations, and are at the forefront to explore unconventional phases of condensed matter. It is important to understand the physics of such spin systems. Spin lattices, such as triangular, square, Kagome, honeycomb and spin-trimer are of special importance. Neutron scattering is known to be an excellent microscopic probe to investigate magnetic states. The speaker and his group have revealed nature of magnetic ground states of a large variety of spin systems with reduced dimensions involving quantum fluctuations. In his talk, the speaker will present the recent experimental results of neutron scattering elucidating the microscopic nature of magnetic correlations in some of these naturally occurring low dimensional spin systems. The experimental results will be compared with the available theoretical results revealing the physics of such novel spin systems with regard to physical properties in reduced dimensions involving quantum fluctuations.

© 2018 Indian Academy of Sciences, Bengaluru.