Spin polarization of the Ar* 2p−11/24s and 2p−11/23d resonant Auger decay

Turri, G.; Lohmann, Bernd; Langer, Burkhard; Snell, G.; Becker, Uwe; Berrah, N.

doi:10.1088/0953-4075/40/17/012

Cited by 4 publications

(2 citation statements)

References 32 publications

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“…119,120,121 The same group at the ALS also developed a TOF experiment with four TOF systems at various angles capable of acquiring coincidence data between the analyzers. 122 This instrument also capitalized on the simple mechanical nature of basic TOF analyzers by incorporating small 12.5 cm analyzers, all rotatable in-situ, and maximizing resolving power to ∼ 5% by utilizing a 2-stage retarding potential.…”

Section: Ultimate Resolutionmentioning

confidence: 99%

A New Spin on Photoemission Spectroscopy

Jozwiak

2008

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Professor Alessandra Lanzara, ChairThe electronic spin degree of freedom is of general fundamental importance to all matter.Understanding its complex roles and behavior in the solid state, particularly in highly correlated and magnetic materials, has grown increasingly desirable as technology demands advanced devices and materials based on ever stricter comprehension and control of the electron spin. However, direct and efficient spin dependent probes of electronic structure are currently lacking.Angle Resolved Photoemission Spectroscopy (ARPES) has become one of the most successful experimental tools for elucidating solid state electronic structures, bolstered by continual breakthroughs in efficient instrumentation. In contrast, spin-resolved photoemission spectroscopy has lagged behind due to a lack of similar instrumental advances. The power of photoemission spectroscopy and the pertinence of electronic spin in the current research climate combine to make breakthroughs in Spin and Angle Resolved Photoemission Spectroscopy (SARPES) a high priority .This thesis details the development of a unique instrument for efficient SARPES and represents a radical departure from conventional methods. A custom designed spin polarimeter based on low energy exchange scattering is developed, with projected efficiency gains of two orders of magnitude over current state-of-the-art polarimeters. For energy analysis, the 1 popular hemispherical analyzer is eschewed for a custom Time-of-Flight (TOF) analyzer offering an additional order of magnitude gain in efficiency. The combined instrument signifies the breakthrough needed to perform the high resolution SARPES experiments necessary for untangling the complex spin-dependent electronic structures central to today's condensed matter physics.

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Section: Ultimate Resolutionmentioning

confidence: 99%

A New Spin on Photoemission Spectroscopy

Jozwiak

2008

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“…Angular distribution of the resonant Auger electrons was studied, for example, in [3,[15][16][17][18] and spin polarization e.g. in [19,20]. Recently, the resonant Auger effect has also been studied in intense x-ray fields, see e.g.…”

Section: Introductionmentioning

confidence: 99%

Auger decay following 1s to 3p resonant excitation in sodium atoms

Kantia¹,

Partanen²,

Huttula³

et al. 2011

J. Phys. B: At. Mol. Opt. Phys.

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Non-monochromatized undulator radiation produced with two different undulator gaps was used to observe the Auger decay following 1s to 3p resonant excitation in atomic sodium. Experimental spectra were analysed by comparing with calculations carried out using the Hartree-Fock method with relativistic corrections. The spectra revealed a rich line structure due to the coupling of the holes created in the Auger decay with the electrons on the 3s and 3p subshells. The results of the analysis also suggest a strong shake-up behaviour of the spectator electron during the Auger decay.

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Correlation and coherence phenomena studied by photoelectron spectroscopy

Becker¹,

Langer²

2009

Nuclear Instruments and Methods in Physics Research Section A:

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Spin polarization of the Ar* 2p⁻¹_1/24s and 2p⁻¹_1/23d resonant Auger decay

Cited by 4 publications

References 32 publications

A New Spin on Photoemission Spectroscopy

A New Spin on Photoemission Spectroscopy

Auger decay following 1s to 3p resonant excitation in sodium atoms

Correlation and coherence phenomena studied by photoelectron spectroscopy

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