dorsal/arxiv
View SchemaOrbital magnetism in axially deformed sodium clusters: From scissors mode to dia-para magnetic anisotropy
| Authors | V. O. Nesterenko, W. Kleinig, P. -G. Reinhard, N. Lo Iudice, F. F. de Souza Cruz, J. R. Marinelli |
|---|---|
| Categories | |
| ArXiv ID | physics/0212084 |
| URL | https://arxiv.org/abs/physics/0212084 |
| DOI | 10.1140/epjd/e2003-00234-2 |
| Journal | Eur. Phys. J. D27, n.1, 43-53 (2003) |
Abstract
Low-energy orbital magnetic dipole excitations, known as scissors mode (SM), are studied in alkali metal clusters. Subsequent dynamic and static effects are explored. The treatment is based on a self-consistent microscopic approach using the jellium approximation for the ionic background and the Kohn-Sham mean field for the electrons. The microscopic origin of SM and its main features (structure of the mode in light and medium clusters, separation into low- and high-energy plasmons, coupling high-energy M1 scissors and E2 quadrupole plasmons, contributions of shape isomers, etc) are discussed. The scissors M1 strength acquires large values with increasing cluster size. The mode is responsible for the van Vleck paramagnetism of spin-saturated clusters. Quantum shell effects induce a fragile interplay between Langevin diamagnetism and van Vleck paramagnetism and lead to a remarkable dia-para anisotropy in magnetic susceptibility of particular light clusters. Finally, several routes for observing the SM experimentally are discussed.
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"abstract": "Low-energy orbital magnetic dipole excitations, known as scissors mode (SM),\nare studied in alkali metal clusters. Subsequent dynamic and static effects are\nexplored. The treatment is based on a self-consistent microscopic approach\nusing the jellium approximation for the ionic background and the Kohn-Sham mean\nfield for the electrons. The microscopic origin of SM and its main features\n(structure of the mode in light and medium clusters, separation into low- and\nhigh-energy plasmons, coupling high-energy M1 scissors and E2 quadrupole\nplasmons, contributions of shape isomers, etc) are discussed. The scissors M1\nstrength acquires large values with increasing cluster size. The mode is\nresponsible for the van Vleck paramagnetism of spin-saturated clusters. Quantum\nshell effects induce a fragile interplay between Langevin diamagnetism and van\nVleck paramagnetism and lead to a remarkable dia-para anisotropy in magnetic\nsusceptibility of particular light clusters. Finally, several routes for\nobserving the SM experimentally are discussed.",
"arxiv_id": "physics/0212084",
"authors": [
"V. O. Nesterenko",
"W. Kleinig",
"P. -G. Reinhard",
"N. Lo Iudice",
"F. F. de Souza Cruz",
"J. R. Marinelli"
],
"categories": [
"physics.atm-clus",
"physics.plasm-ph"
],
"doi": "10.1140/epjd/e2003-00234-2",
"journal_ref": "Eur. Phys. J. D27, n.1, 43-53 (2003)",
"title": "Orbital magnetism in axially deformed sodium clusters: From scissors mode to dia-para magnetic anisotropy",
"url": "https://arxiv.org/abs/physics/0212084"
},
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