Size onset of metallic behavior in neutral aluminum clusters

Rotteger, Chase H.; Jarman, Carter K.; Sutton, Shaun F.; Sayres, Scott G.

doi:10.1039/d4nr02032d

Nanoscale

2024

DOI: 10.1039/d4nr02032d

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Size onset of metallic behavior in neutral aluminum clusters

Chase H. Rotteger,

Carter K. Jarman,

Shaun F. Sutton

et al.

Abstract: The excited state lifetimes of neutral (Al)n clusters up to ∼1 nm in diameter in size, where n ≤ 43, are systematically measured with femtosecond time-resolved mass spectrometry.

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Subpicosecond Dynamics of Rydberg Excitons Produced from Ultraviolet Excitation of Neutral Cuprite (Cu₂O)_n Clusters, n < 13

Rotteger,

Jarman,

Sobol

et al. 2024

J. Phys. Chem. A

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The ultrafast dynamics of subnanometer neutral cuprite clusters (Cu 2 O) n , n < 13, are examined with pump probe spectroscopy. Upon absorption of an ultraviolet (400 nm) photon, all clusters exhibit a subpicosecond lifetime that we attribute to carrier recombination. Density functional theory (DFT) shows a change in the structural motif between small planar clusters and three-dimensional structures at n = 4. This transition is accompanied by a change in the excited state relaxation behavior, marking the onset for which lifetimes increase gradually with size. Time-dependent DFT calculations show that the excited state lifetimes align with calculated topological parameters and charge carrier delocalization associated with the formation of Rydberg excitons. Terminal Cu atoms are found to be important for the production of Rydberg excitons at the lowest optically allowed excited state. Upon excitation, the electron resides on terminal Cu atoms and the hole becomes delocalized across the remainder of the cluster.

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Subpicosecond Dynamics of Rydberg Excitons Produced from Ultraviolet Excitation of Neutral Cuprite (Cu₂O)_n Clusters, n < 13

Rotteger,

Jarman,

Sobol

et al. 2024

J. Phys. Chem. A

View full text Add to dashboard Cite

show abstract

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Size onset of metallic behavior in neutral aluminum clusters

Abstract: The excited state lifetimes of neutral (Al)n clusters up to ∼1 nm in diameter in size, where n ≤ 43, are systematically measured with femtosecond time-resolved mass spectrometry.

Cited by 1 publication

References 68 publications

Subpicosecond Dynamics of Rydberg Excitons Produced from Ultraviolet Excitation of Neutral Cuprite (Cu₂O)_n Clusters, n < 13

Subpicosecond Dynamics of Rydberg Excitons Produced from Ultraviolet Excitation of Neutral Cuprite (Cu₂O)_n Clusters, n < 13

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Size onset of metallic behavior in neutral aluminum clusters

Abstract: The excited state lifetimes of neutral (Al)n clusters up to ∼1 nm in diameter in size, where n ≤ 43, are systematically measured with femtosecond time-resolved mass spectrometry.

Cited by 1 publication

References 68 publications

Subpicosecond Dynamics of Rydberg Excitons Produced from Ultraviolet Excitation of Neutral Cuprite (Cu2O)n Clusters, n < 13

Subpicosecond Dynamics of Rydberg Excitons Produced from Ultraviolet Excitation of Neutral Cuprite (Cu2O)n Clusters, n < 13

Contact Info

Product

Resources

About

Subpicosecond Dynamics of Rydberg Excitons Produced from Ultraviolet Excitation of Neutral Cuprite (Cu₂O)_n Clusters, n < 13

Subpicosecond Dynamics of Rydberg Excitons Produced from Ultraviolet Excitation of Neutral Cuprite (Cu₂O)_n Clusters, n < 13