11 papers
Quasiparticle spectrum of d-wave superconductors in the mixed state: a large Fermi-velocity anisotropy study
Luca Marinelli, B. I. Halperin
The quasiparticle spectrum of a two-dimensional d-wave superconductor in the mixed state, H_c1 << H << H_c2, is studied for large values of the ``anisotropy ratio'' alpha_D = v_F/v…
Quasiparticle Spectrum of d-wave Superconductors in the Mixed State
Luca Marinelli, B. I. Halperin, S. H. Simon
The quasiparticle spectrum of a two-dimensional d-wave superconductor in the mixed state, H_{c1} << H << H_{c2}, is studied both analytically and numerically using the linearized B…
Comment on ``Evidence for Anisotropic State of Two-Dimensional Electrons in High Landau Levels''
Steven H. Simon
In a recent letter M. Lilly et al [PRL 82, 394 (1999)] have shown that a highly anisotropic state can arise in certain two dimensional electron systems. In the large square samples…
Half-filled Landau level as a Fermi liquid of dipolar quasiparticles
A. Stern, B. I. Halperin, F. von Oppen +1
In this paper we study the relation between the conventional Fermion-Chern-Simons (FCS) theory of the half-filled Landau level (nu=1/2), and alternate descriptions that are based o…
Coupling of Surface Acoustic Waves to a Two Dimensional Electron Gas
Steven H. Simon
When a surface acoustic wave (SAW) is coupled piezoelectrically to a two dimensional electron gas (2DEG), a velocity shift and attenuation of the SAW are induced that reflect the c…
Composite Fermions with Orbital Magnetization
Steven H. Simon, Ady Stern, Bertrand I. Halperin
For quantum Hall systems, in the limit of large magnetic field (or equivalently small electron band mass ), the static response of electrons to a spatially varying magnetic fi…