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10 papers · 1 filter
Butterfly hysteresis curve is a signature of adiabatic Landau-Zener transition
Mark Vogelsberger, D. A. Garanin, Rolf Schilling
We stress that the so-called butterfly hysteresis curves observed in dynamical magnetization measurements on systems of low-spin magnetic molecules such as V-15 and V-6 are a signa…
Electromagnetic interactions of higher dimensional quantum Hall droplets
Dimitra Karabali
Using a -gauge theory to describe electromagnetic interactions of spinless fermions in the lowest Landau level, where the transformations are nonlinear realizations…
Propagation of Avalanches in Mn-acetate: Magnetic Deflagration
Yoko Suzuki, M. P. Sarachik, E. M. Chudnovsky +8
Local time-resolved measurements of fast reversal of the magnetization of single crystals of Mn12-acetate indicate that the magnetization avalanche spreads as a narrow interface th…
Field Dependence of the Electron Spin Relaxation in Quantum Dots
Carlos Calero, E. M. Chudnovsky, D. A. Garanin
Interaction of the electron spin with local elastic twists due to transverse phonons has been studied. Universal dependence of the spin relaxation rate on the strength and directio…
Maximal Sidon Sets and Matroids
J. A. Dias da Silva, Melvyn B. Nathanson
Let X be a subset of an abelian group and a_1,...,a_h,a'_1,...,a'_h a sequence of 2h elements of X such that a_1 + ... + a_h = a'_1 + ... + a'_h. The set X is a Sidon set of order…
A new upper bound for finite additive bases
Sinan Gunturk, Melvyn B. Nathanson
Let n(2,k) denote the largest integer n for which there exists a set A of k nonnegative integers such that the sumset 2A contains {0,1,2,...,n-1}. A classical problem in additive n…