Journal
PHYSICAL REVIEW B
Volume 100, Issue 18, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.100.180405
Keywords
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Funding
- Fulbright US Student Program
- Swiss National Science Foundation [PP00P2_176866, 200020_176932]
- Swiss National Science Foundation (SNF) [200020_176932, PP00P2_176866] Funding Source: Swiss National Science Foundation (SNF)
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The magnetic quantum states of holmium single atom magnets on MgO(100) have proven extremely robust when exposed to high magnetic fields and temperatures up to 35 K. Here we address the stability of Ho at small magnetic fields, where the hyperfine interaction creates several avoided level crossings. Using spin-polarized scanning tunneling microscopy, we demonstrate quantum state control via Landau-Zener tunneling and stable magnetization at zero field. Our observations indicate a total spin ground state of J(z) = +/- 8. Combined quantum and classical control render Ho a promising qubit candidate.
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