title: Single-shot nuclear magnetization recovery curves with force-gradient detection.
abstract: We measure the spin-lattice relaxation time as a function of sample temperature in GaAs in a real-time single-shot inversion recovery experiment using spin force gradients acting on a magnetic tipped cantilever. After inverting69Ga spins localized near the magnet with a single 20 ms adiabatic rapid passage sweep, the spins' magnetization recovery was passively tracked by recording the cantilever's frequency change, which is proportional to the longitudinal component of the spins' magnetization. The cantilever's frequency was recorded for a time 3*T1for sample temperatures ranging from 4.8 to 25 K. The temperature dependence was observed for the69Ga quadrupolar relaxation interaction.
authors.affiliation: U.S. Army Research Laboratory , Adelphi, Maryland 20783, USA.
authors.forename: Dimitri A
authors.initials: DA
authors.lastname: Alexson
authors.forename: Steven A
authors.initials: SA
authors.lastname: Hickman
authors.affiliation: Department of Chemistry and Chemical Biology, Cornell University , Ithaca, New York 14853-1301, USA.
authors.forename: John A
authors.initials: JA
authors.lastname: Marohn
authors.affiliation: U.S. Army Research Laboratory , Adelphi, Maryland 20783, USA.
authors.forename: Doran D
authors.initials: DD
authors.lastname: Smith