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5 papers · 1 filter
Raman scattering in a two-layer antiferromagnet
Dirk K. Morr, Andrey V. Chubukov, Arno P. Kampf +1
Two--magnon Raman scattering is a useful tool to verify recent suggestions concerning the value of the interplanar exchange constant in antiferromagnetic two--layer systems, such a…
Observational Searches for Solar g-modes: Some Theoretical Considerations
Pawan Kumar, Eliot Quataert, John N. Bahcall
We argue that the solar g-modes are unlikely to have caused the discrete peaks in the power spectrum of the solar wind flux observed by Thomson et al. (1995). The lower limit to th…
Antiferromagnetic Excitations and Van Hove Singularities in YBaCuO
G. Blumberg, Branko P. Stojkovic, M. V. Klein
We show that in quasi-two-dimensional -wave superconductors Van Hove singularities close to the Fermi surface lead to novel magnetic quasi-particle excitations. We calculate the…
Tidal Excitation of Modes in Binary Systems with Applications to Binary Pulsars
Pawan Kumar, Chi On Ao, Eliot J. Quataert
We consider the tidal excitation of modes in a binary system of arbitrary eccentricity. For a circular orbit, the modes generally undergo forced oscillation with a period equal to…
Study of D*(2010)+- Production in ep Collisions at HERA
ZEUS Collaboration
We report the first observation of charmed mesons with the ZEUS detector at HERA using the decay channel ${\rm D}^{*+}\rightarrow (\Do \rightarrow {\rm K}^-π^+)π^+$ (+ c.c.). Clear…