6 papers
The ubiquitous 1100 charge ordering in organic charge-transfer solids
S. Mazumdar, R. T. Clay, D. K. Campbell
Charge and spin-orderings in the 1/4-filled organic CT solids are of strong interest, especially in view of their possible relations to organic superconductivity. We show that the…
Charge ordering in theta-(BEDT-TTF)_2 X materials
R. T. Clay, S. Mazumdar, D. K. Campbell
We investigate theoretically charge ordered states on the anisotropic triangular lattice characteristic of the theta-(BEDT-TTF)_2 X materials. Using exact diagonalization studies,…
Momentum conservation implies anomalous energy transport in 1d classical lattices
Tomaz Prosen, David K. Campbell
Under quite general conditions, we prove that for classical many-body lattice Hamiltonians in one dimension (1D) total momentum conservation implies anomalous conductivity in the s…
Theory of Coexisting Charge and Spin-Density Waves in (TMTTF)_2Br, (TMTSF)_2PF_6 and alpha-(BEDT-TTF)_2MHg(SCN)_4
S. Mazumdar, S. Ramasesha, R. T. Clay +1
Recent experiments indicate that the spin-density waves (SDWs) in (TMTTF)_2Br, (TMTSF)_2PF_6 and alpha-(BEDT-TTF)_2MHg(SCN)_4 are highly unconventional and coexist with charge-dens…
A.C.-Transport Through a Two-Dimensional Quantum Point Contact
I. E. Aronov, G. P. Berman, D. K. Campbell +1
We calculate the admittance of a two-dimensional quantum point contact (QPC) using a Boltzman-like kinetic equation derived for a partial Wigner distribution function in an effecti…
On a class of integrable interacting electronic systems with off-diagonal disorder
A. H. Castro Neto, D. K. Campbell, Philip Phillips
We report a class of {\it integrable} one-dimensional interacting electronic sy$ with {\it off-diagonal disorder}. For these systems, the disorder can be ``gauged away,''and the sp…