Sriram Shastry
Professor
Department of
(831) 459 5849 (O)
(831) 459 3043 (F)
sriram@physics.ucsc.edu
Research Material Link:
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Monkey business on a recent visit to South
India
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Current Research
Interests:
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Physics of Strongly
Correlated Matter: Superconductivity,
Hall effect,
Thermo-power and Thermal transport in Sodium Cobaltate and other
triangular lattice systems.
- Statistical mechanics of spin iceand other geometrically frustrated systems with ground state entropy, slow approach to equilibrium.
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Quantum Chaos: Universalities in energy level spectral correlations of mesoscopic
systems.
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Quantum Integrability
through star
triangle relations
and Exactly Solvable Model Systems.
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1-d Hubbard model, its conservation laws, the 1/r2 Model
of interacting spins and s=1/2
quantum spin models in 2-d with simple ground states, studies of
excitation spectra. Transport in integrable systems: driven steady states,
Kohn type stiffness andtwisted boundary conditions.
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Theory of
Raman scattering for interacting electrons on a
lattice.
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Theory of
NMR relaxation rates in correlated
electronic systems.
- Novel material realizations of frustrated quantum systems in low dimensions e.g. two dimensionalMott Insulating dimer system SrCu2(BO 3)2, and their unusual properties. [For a fascinating connection with Archimedian lattices and other topics in 2-d magnetism see preprint by J Richter, J Schulenburg and A Honecker.]
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Mechanisms for superconductivity on
lattices from repulsion: Superconductivity fromuncertainty principle type squeezed degrees of freedom,
Gutzwiller type variational wave functions, RVB
and flux phases.
Some Inspiring Pictures of
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