Laser polarization facility

Local metallic and structural properties of the strongly correlated metal LaNiO3 using 8Li β–NMR

“…All of the experiments were conducted using the β-NMR spectrometer at TRIUMF in Vancouver, Canada. 21,22 The 8 Li + probe nuclei (spin I = 2, gyromagnetic ratio γ/2π = 6.3016 MHz T −1 , electric quadrupole moment Q = +32.6 mb, and radioactive lifetime τ = 1.21 s) were spin-polarized in-flight using optical pumping 23 and subsequently ion-implanted into the LNO samples. The implantation energies were 2.9 keV and 27.9 keV corresponding to mean depths of 12.9 nm and 99.5 nm (details in Appendix A).…”

Spin fluctuations in the exotic metallic state ofSr2RuO4studied withβ-NMR

“…These results are an important demonstration that 8 Li + β-NMR is a sensitive probe of the intrinsic metallic properties of a correlated-electron complex oxide. In the experiment, a beam of radioactive 8 Li + from the Isotope Separation and Acceleration (ISAC) facility at TRIUMF [21] was spin polarized in flight using collinear optical pumping [22] and implanted into a cleaved c-axis Sr 2 RuO 4 platelet crystal, part of the one used in Ref. [23], measuring ∼3 × 4 × 0.5 mm.…”

β-NMR of 8Li+ in rutile TiO2

“…The probe nucleus, 8 Li, has spin I = 2, a quadrupole moment Q = +31.4 mb, a gyromagnetic ratio γ = 6.3015 MHz T −1 , and a mean lifetime τ = 1.21 s. A large nuclear spin-polarization (∼ 70%) is achieved by collinear optical pumping with resonant circularly polarized laser light [12] such that the direction of spin-polarization is aligned parallel or antiparallel to the static applied magnetic field, B 0 . A high-voltage bias is used to decelerate the beam prior to implantation.…”