Elementary excitations in the cyclic molecular nanomagnet Cr8

Abstract

Combining recent and new inelastic neutron scattering data for the molecular cyclic cluster Cr8 produces a deep understanding of the low lying excitations in bipartite antiferromagnetic Heisenberg rings. The existence of the L-band, the lowest rotational band, and the E-band, essentially spin wave excitations, is confirmed spectroscopically. The different significance of these excitations and their physical nature is clearly established by high-energy and Q-dependence data.

4 pages, 4 figures, RevTex4, to appear in PRL

References in corpus (7)

• Rotational modes in molecular magnets with antiferromagnetic Heisenberg exchange
• Macroscopic Quantum Coherence in Molecular Magnets
• Field dependent anisotropy change in a supramolecular Mn(II)-[3x3] grid
• Quantum rotational band model for the Heisenberg molecular magnet Mo72Fe30
• Butterfly hysteresis loop at non-zero bias field in antiferromagnetic molecular rings: cooling by adiabatic magnetization
• Q-dependence of the inelastic neutron scattering cross section for molecular spin clusters with high molecular symmetry
• Spin dynamics and coherent tunnelling in the molecular magnetic rings Fe_6 and Fe_8

Cited by in corpus (32)

• Molecular engineering of antiferromagnetic rings for quantum computation
• Magnetothermal properties of molecule-based materials
• Magnetic Cluster Excitations
• Spin dynamics of molecular nanomagnets fully unraveled by four-dimensional inelastic neutron scattering
• Spin dynamics of heterometallic Cr7M wheels (M = Mn, Zn, Ni) probed by inelastic neutron scattering
• Magnetic excitations in {Mo72Fe30}
• Frustration effects in magnetic molecules
• Many-spin effects in inelastic neutron scattering and electron paramagnetic resonance of molecular nanomagnets
• Mesoscopic quantum coherence in antiferromagnetic molecular clusters
• Curvilinear one-dimensional antiferromagnets
• The even-odd effect in short antiferromagnetic Heisenberg chains
• Discrete antiferromagnetic spin-wave excitations in the giant ferric wheel Fe18
• Quantum-magneto oscillations in a supramolecular Mn(II)-[3 x 3] grid
• Quantum Dynamics in the Thermodynamic Limit
• Quantized antiferromagnetic spin waves in the molecular Heisenberg ring CsFe${}_8$
• E-band excitations in the magnetic Keplerate molecule Fe30
• Quantum dynamics of the Neel vector in the antiferromagnetic molecular wheel CsFe8
• Combined use of translational and spin-rotational invariance for spin systems
• Field-induced magnetoelastic instabilities in antiferromagnetic molecular wheels
• Towards the chemical tuning of entanglement in molecular nanomagnets
• Unravelling the Spin Dynamics of Molecular Nanomagnets with Four-Dimensional Inelastic Neutron Scattering
• Spin anisotropy effects in dimer single molecule magnets
• Standing Spin Waves in an Antiferromagnetic Molecular Cr6 Horseshoe
• Inelastic neutron scattering study and Hubbard model description of the antiferromagnetic tetrahedral molecule Ni4Mo12
• Field-induced level crossings in spin clusters: Thermodynamics and magneto-elastic instability
• Quantum tunneling of the Neel vector in antiferromagnetic [3 x 3] grid molecules
• Theoretical estimates for proton-NMR spin-lattice relaxation rates of heterometallic spin rings
• Frustration effects in magnetic molecules
• Breaking the ring: ${}^{53}$Cr-NMR on the Cr${}_8$Cd molecular nanomagnet
• Level crossings and zero-field splitting in the \{Cr${}_8$\}-cubane spin-cluster by inelastic neutron scattering and magnetization studies
• Frustration-induced exotic properties of magnetic molecules
• Symmetry-Induced Universal Momentum-Transfer Dependencies for Inelastic Neutron Scattering on Anisotropic Spin Clusters