Physical properties of TmTe at low temperatures investigated by [formula omitted]-NMR

Abstract

We have carried out Te 125 nuclear magnetic resonance (NMR) in a low-carrier compound TmTe at low temperatures below ∼ 4 K . The resonance frequency ≃ 7 MHz is nearly independent of applied magnetic field ( 0.6 – 1.4 T ) , indicating a saturating behavior of the internal field at Te nuclei originating from Tm 2 + . Below ∼ 2 K , the NMR spectrum splits into two lines. The implication of the new NMR findings is discussed in terms of the crystalline electric field splitting (4.6 and 11 K), the antiferro-quadrupolar ordering (1.8 K), and a possible short-range ferromagnetic ordering.