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Interactions and Scaling in a Disordered Two-Dimensional Metal
Sudip Chakravarty, Lan Yin, Elihu Abrahams
We show that a non-Fermi liquid state of interacting electrons in two dimensions is stable in the presence of disorder and is a perfect conductor, provided the interactions are suf…
Scaling theory of two-dimensional metal-insulator transitions
V. Dobrosavljevic, Elihu Abrahams, E. Miranda +1
We discuss the recently discovered two-dimensional metal-insulator transition in zero magnetic field in the light of the scaling theory of localization. We demonstrate that the obs…
Low Temperature Correlation Lengths of Bilayer Heisenberg AntiFerromagnets and Neutron Scattering
Lan Yin, Sudip Chakravarty
The low temperature correlation length and the static structure factor are computed for bilayer antiferromagnets such as YBa_2Cu_3O_6. It is shown that energy integrated two-axis s…
Interchain Coupling Effects and Solitons in CuGeO_3
Jun Zang, Sudip Chakravarty, A. R. Bishop
The effects of interchain coupling on solitons and soliton lattice structures in CuGeO3 are explored. It is shown that interchain coupling substantially increases the soliton width…
The NMR relaxation rate of O in undoped Sr_2CuO_2Cl_2: Probing two-dimensional magnons at short distances
Peter Kopietz, Sudip Chakravarty
We calculate the nuclear relaxation rate of oxygen in the undoped quasi two-dimensional quantum Heisenberg antiferromagnet Sr_2CuO_2Cl_2 above the Neel temperature. The calculation…
Correlation Lengths in Quantum Spin Ladders
Olav F. Syljuasen, Sudip Chakravarty, Martin Greven
Analytic expressions for the correlation length temperature dependences are given for antiferromagnetic spin-1/2 Heisenberg ladders using a finite-size non-linear sigma-model appro…