Science Advances

Supplementary Materials

This PDF file includes:

  • Section S1. Binding site of Ti atoms on 2 ML MgO/Ag(001)
  • Section S2. ESR of individual Ti atoms
  • Section S3. Magnetic interaction of Ti dimers
  • Section S4. Spin Hamiltonian of two coupled Ti spins
  • Section S5. Detection mechanism of ESR
  • Section S6. Driving mechanism of ESR
  • Section S7. Determination of spin coherence time
  • Fig. S1. Tunneling current as a function of the tip-atom distance for TiB (blue) and TiO (red) on 2 ML MgO/Ag(001) at VDC = 10 mV.
  • Fig. S2. ESR of individual Ti atoms.
  • Fig. S3. Characterization of magnetic interaction between Ti atoms.
  • Fig. S4. Tip field effects on eigenenergies and eigenstates of TiO-TiB dimers.
  • Fig. S5. Resonance frequencies measured on each atom of a weakly coupled dimer (r = 0.92 nm, J ≈ 0.8 GHz) at different tip fields.
  • Fig. S6. ESR frequencies measured on each atom of strongly coupled dimers (r = 0.72 nm, J ≈ 30 GHz) at different tip fields.
  • Fig. S7. ESR signals for the S-T0 transition with different DC biases.
  • Fig. S8. Determination of spin coherence time at different DC biases and temperatures.
  • Fig. S9. Spin coherence time with different DC biases (or different tunneling currents) for individual TiO and TiB atoms.
  • Fig. S10. Comparison of ESR signals for the singlet-triplet transition measured on the TiO (black) and TiB (green) atoms in the TiO-TiB dimer.

Download PDF

Files in this Data Supplement: