CMSP Seminar IN PERSON, 21 October at 11:00am, Prof. Ganapathy BASKARAN

[CMSP Seminars Secretariat]

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CMSP Seminar
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** * * Friday**, 21 October 2022, 11:00**am * * **
In person: *Luigi Stasi Seminar Room
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/Zoom registration link: 
https://zoom.us/meeting/register/tJItceGqqjorHdXwwrtF1RqZ_S4iERtDWGKd/**

Speaker: *Ganapathy Baskaran *(Matscience, IITMadras, India & Perimeter 
Institute, Waterloo, Canada)

Title: *Emergent Quantum Spin Liquids in Lower Dimensional Ferromagnetic 
Spin Systems

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Abstracts:
Quantum Fluctuations remove long range Ferromagnetic order in 1D 
spin-1/2 XX Ferromagnetic Chains: a free Fermi sea of neutral 
Jordan-Wigner Fermions emerge. A small Ising Ferromagnetic anisotropy in 
XXZ chain favors pairing of JW Fermions. It results in a novel `Spin 
Superfluid' phase (Baskaran, 1982, ICTP Internal Report; IC/82/126), via 
Fermion pair condensation (triplet RVB phase, in modern parlance) in 
weakly coupled system of Ferromagnetic XXZ Chains. We discuss emergent 
quantum spin liquids in systems with ferromagnetic anisotropy (eg., 
Konig, Komijani and Coleman, PRB 2022) and contrast it with currently 
popular quantum spin liquids in frustrated antiferromagnetic systems.

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CMSP, Condensed Matter & Statistical Physics Section
http://www.ictp.it/research/cmsp.aspx

The Abdus Salam International Centre for Theoretical Physics
https://www.ictp.it/

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