6 papers · 1 filter
Comment on "Predominantly Superconducting Origin ...", by N. Miyakawa, et al
R. S. Markiewicz, C. Kusko
Recent tunneling studies in Bi2Sr2CaCu2O8 suggest that the pseudogap is caused by superconducting fluctuations. By reanalyzing this data, we show that instead there is a second non…
Higher Symmetries in Condensed Matter Physics
R. S. Markiewicz, M. T. Vaughn
We discuss some applications of higher symmetry groups to condensed matter systems. We give special attention to the groups SO(n) (n = 4, 5, 6, 8) in the two-dimensional Hubbard mo…
Stripes Have Hair
R. S. Markiewicz
It is suggested that recent experiments provide evidence for modulations along the charged stripes in the striped phase of the cuprates. Furthermore, 1/8 doping is special because…
Tunneling and Photoemission in an SO(6) Superconductor
R. S. Markiewicz, C. Kusko, M. T. Vaughn
Combining the results of tunneling, photoemission and thermodynamic studies, the pseudogap is unambiguously demonstrated to be caused by Van Hove nesting: a splitting of the densit…
Tunneling Studies of Pseudogaps: a Comment
R. S. Markiewicz, C. Kusko
Recent tunneling observations of a pseudogap in Bi_2Sr_2CaCu_2O_{8+delta} are not necessarily evidence that the pseudogap is associated with superconducting fluctuations. The data…
The Spectrum-Generating Algebra of the Van Hove Scenario is SO(8)
R. S. Markiewicz, M. T. Vaughn
The various nesting and pairing instabilities of the generalized Van Hove scenario can be classified via an SO(8) spectrum-generating algebra. An SO(6) subgroup is an approximate s…