Anomalous NMR frequency shift in the low-field phase of solid <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">He</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>3</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span>

Y. P. Feng; P. Schiffer; D. D. Osheroff

doi:10.1103/PhysRevLett.67.691

Anomalous NMR frequency shift in the low-field phase of solid ${}^{3}{He}$

Y. P. Feng, P. Schiffer, and D. D. Osheroff

Phys. Rev. Lett. 67, 691 – Published 5 August 1991

Abstract

We present results of the first orientation-dependent study of the spin dynamics of the low-field spin-ordered phase of solid ${}^{3}{He}$ , the U2D2 phase. The results of a hydrodynamical treatment of the spin dynamics describe the observed behavior exceedingly well; however, only if a field- and orientation-independent negative shift, not provided by the theory, is properly incorporated into the equations. This shift does not arise from a lattice distortion as had been expected, and its measured temperature dependence suggests an unknown nonhydrodynamical origin.