92 citations · 202 across the 11 of their papers we have counts for
6 papers · 1 filter
Thermoelectric Modeling of the Non-Ohmic Differential Conductance in a Tunnel Junction containing a Pinhole
Zhongsheng Zhang, David A. Rabson
To test the quality of a tunnel junction, one sometimes fits the bias-dependent differential conductance to a theoretical model, such as Simmons's formula. Recent experimental work…
Crossover from Poisson to Wigner-Dyson Level Statistics in Spin Chains with Integrability Breaking
D. A. Rabson, B. N. Narozhny, A. J. Millis
We study numerically the evolution of energy-level statistics as an integrability-breaking term is added to the XXZ Hamiltonian. For finite-length chains, physical properties exhib…
Diagnosis and Location of Pinhole Defects in Tunnel Junctions using only Electrical Measurements
Zhongsheng Zhang, David A. Rabson
In the development of the first generation of sensors and memory chips based on spin-dependent tunneling through a thin trilayer, it has become clear that pinhole defects can have…
Cohomology for Anyone
David A. Rabson, John F. Huesman, Benji N. Fisher
Crystallography has proven a rich source of ideas over several centuries. Among the many ways of looking at space groups, N. David Mermin has pioneered the Fourier-space approach.…
Fourier-Space Crystallography as Group Cohomology
David A. Rabson, Benji Fisher
We reformulate Fourier-space crystallography in the language of cohomology of groups. Once the problem is understood as a classification of linear functions on the lattice, restric…
A Spin Model for Investigating Chirality
D. A. Rabson, S. A. Trugman
Spin chirality has generated great interest recently both from possible applications to flux phases and intrinsically, as an example of a several-site magnetic order parameter that…