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Volumn 74, Issue 5, 2006, Pages

Quantum dynamics of the Néel vector in the antiferromagnetic molecular wheel Cs Fe8

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EID: 33747890823     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.74.054429     Document Type: Article
Times cited : (27)

References (48)
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    • note
    • The assignment of the various transitions forming the spectrum of Fig. 8 is as follows [compare also with Fig. 4]. Peaks I and II correspond to the two possible transitions between the S=0 and S=1 multiplets: 0,0 → 1,0 and 0,0 → 1,±1. The peaks III, IV, and V arise from the five transitions between the S=1 and S=2 multiplets. In order of increasing energy, peak IV: 1,±1 → 2,0 and 1,±1 → 2,±1, peak V: 1,±1 → 2,±2, peak III: 1,0 → 2,0 and 1,0 → 2,±1. Finally, peak VI is produced by six of the eight possible transitions between the S=2 and S=3 multiplets: 2,±1 → 3,0, 2,0 → 3,0, 2,±1 → 3,±1, 2,0 → 3,±1, 2,±2 → 3,±3, and 2,±1 → 3,±2. Concerning the two remaining transitions, transition 2,±2 → 3,±1 (at 2.30 meV) coincides with the transition 1,0 → 2,±1 within the resolution of Fig. 8, and transition 2,±2 → 3,±2 appears as a weak satellite to peak III at 2.52 meV.
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    • The parameters D2 and B40 relate to the effective Hamiltonian for the S=2 multiplet H S=2 = D2 [S z2 -1 3S (S+1)] + B40 O 40 (S), where O 40 (S) is a Stevens operator (Ref.).
    • The parameters D2 and B40 relate to the effective Hamiltonian for the S=2 multiplet H S=2 = D2 [S z2 -1 3S (S+1)] + B40 O 40 (S), where O 40 (S) is a Stevens operator (Ref.).


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