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cond-mat.mes-hall2000★ 17 cited
Abrupt Transition between Thermally-Activated Relaxation and Quantum Tunneling in a Molecular Magnet
K. M. Mertes, Y. Zhong, M. P. Sarachik +5
We report Hall sensor measurements of the magnetic relaxation of Mn acetate as a function of magnetic field applied along the easy axis of magnetization. Data taken at a ser…
cond-mat.mes-hall2000★ 41 cited
The onset of exciton absorption in modulation doped GaAs quantum wells
G. Yusa, H. Shtrikman, I. Bar-Joseph
We study the evolution of the absorption spectrum of a modulation doped GaAs/AlGaAs semiconductor quantum well with decreasing the carrier density. We find that there is a critical…