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Open Quantum Systems Decoherence
Quantum Chemistry
Generating Unexpected Spin Echoes in Dipolar Solids with Pi Pulses
arXiv
Authors: Dale Li, A. E. Dementyev, Yanqun Dong, R. G. Ramos, S. E. Barrett
Year
2007
Paper ID
50405
Status
Preprint
Abstract Read
~2 min
Abstract Words
78
Citations
N/A
Abstract
NMR spin echo measurements of C-13 in C60, Y-89 in Y2O3, and Si-29 in silicon are shown to defy conventional expectations when more that one pi pulse is used. Multiple pi-pulse echo trains may either freeze our or accelerate the decay of the signal, depending on the pi-pulse phase. Average Hamiltonian theory, combined with exact quantum calculations, reveals an intrinsic cause for these coherent phenomena: the dipolar coupling has a many-body effect during any real, finite pulse.
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- This paper contributes to the Quantum Chemistry research area in the Quantum Articles archive.
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- NMR spin echo measurements of C-13 in C60, Y-89 in Y2O3, and Si-29 in silicon are shown to defy conventional expectations when more that one pi pulse is used.
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