title: Transition-Selective Pulses in Zero-Field Nuclear Magnetic Resonance.
abstract: We use low-amplitude, ultralow frequency pulses to drive nuclear spin transitions in zero and ultralow magnetic fields. In analogy to high-field NMR, a range of sophisticated experiments becomes available as these allow narrow-band excitation. As a first demonstration, pulses with excitation bandwidths 0.5-5 Hz are used for population redistribution, selective excitation, and coherence filtration. These methods are helpful when interpreting zero- and ultralow-field NMR spectra that contain a large number of transitions.
authors.affiliation: Department of Chemistry, University of California at Berkeley , Berkeley, California 94720-3220, United States.
authors.forename: Tobias F
authors.initials: TF
authors.lastname: Sjolander
authors.affiliation: Department of Physics, University of California at Berkeley , Berkeley, California 94720-7300, United States.|Magnetic Resonance Research Centre, Department of Chemical Engineering and Biotechnology, University of Cambridge , Pembroke Street, Cambridge CB2 3RA, U.K.
authors.forename: Michael C D
authors.initials: MC
authors.lastname: Tayler
authors.affiliation: Department of Chemistry, University of California at Berkeley , Berkeley, California 94720-3220, United States.|Materials Science Division, Lawrence Berkeley National Laboratory , Berkeley California 94720-3220, United States.
authors.forename: Jonathan P
authors.initials: JP
authors.lastname: King
authors.affiliation: Department of Physics, University of California at Berkeley , Berkeley, California 94720-7300, United States.|Materials Science Division, Lawrence Berkeley National Laboratory , Berkeley California 94720-3220, United States.|Helmholtz Institute Mainz, Johannes Gutenberg University , 55099 Mainz, Germany.
authors.forename: Dmitry
authors.initials: D
authors.lastname: Budker
authors.affiliation: Department of Chemistry, University of California at Berkeley , Berkeley, California 94720-3220, United States.|Materials Science Division, Lawrence Berkeley National Laboratory , Berkeley California 94720-3220, United States.
authors.forename: Alexander
authors.initials: A
authors.lastname: Pines