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Seminar/ Colloquium

Home  »  Colloquium   »   Resonating Valence Bond States as Abode of Ambient Temperature Superconductivity

Resonating Valence Bond States as Abode of Ambient Temperature Superconductivity

Date: 19th March, 2024
Time & Venue: 5:30 pm, LH2, Lecture Hall Complex, Permanent Campus 
Speaker: Prof. G. Baskaran, IIT Madras, Matscience and Perimeter Institute
Title: Resonating Valence Bond States as Abode of Ambient Temperature Superconductivity

Abstract: Quantum fluctuations in certain Mott insulators generate entangled spin pairs, resulting in an incompressible liquid of pre-formed neutral Cooper pairs, or a resonating valence bond state. The strength of a single pairing is decided by local quantum chemistry. We consider a variety of real materials, revisit our prediction of room temperature superconductivity in doped Graphite and silicene, and discuss the elusive and unstable superconductivity reported in graphite, metal ammonia solutions, hydrides, Ag-Au Nanostructures, LK99 and other materials. In spite of growing skepticism, I encourage a fresh look at these problems, as RVB theory admits RTSC, within the constraints of quantum chemistry in real systems.

About the speaker: Prof. G Baskaran is an Emeritus Professor at the Institute of Mathematical Sciences, Chennai, India, where he recently founded the Quantum Science Centre. He has made important contributions to the field of strongly correlated quantum matter. His primary research focus is on novel emergent quantum phenomena in matter, including biological ones. He is well known for his contributions to the theory of high-temperature superconductivity and for discovering emergent gauge fields in strongly correlated electron systems. He predicted p-wave superconductivity in Sr2RuO4, a system believed to support Majorana fermion mode, which is a popular qubit for topological quantum computation. In recent work, he predicted room temperature superconductivity in optimally doped graphene. From 1976 to 2006, Dr. Baskaran contributed substantially to the Abdus Salam International Centre for Theoretical Physics in Trieste, Italy. 
He is a past recipient of the S. S. Bhatnagar Award from the Indian Council of Scientific and Industrial Research (1990), the Alfred Kasler ICTP Prize (1983), Fellowships of the Indian Academy of Sciences (1988), the Indian National Science Academy (1991) and the Third World Academy of Sciences (2008), and the Distinguished Alumni Award of the Indian Institute of Science, Bangalore (2008).