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000169880 1001_ $$0P:(DE-H253)PIP1013668$$aFognini, Andreas$$b0$$eCorresponding Author
000169880 245__ $$aThe role of space charge in spin-resolved photoemission experiments
000169880 260__ $$a[Bad Honnef]$$bDt. Physikalische Ges.$$c2014
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000169880 520__ $$aSpin-resolved photoemission is one of the most direct ways of measuring the magnetization of a ferromagnet. If all valence band electrons contribute, the measured average spin polarization is proportional to the magnetization. This is even the case if electronic excitations are present, and thus is of particular interest for studying the response of the magnetization to a pump laser pulse. Here, we demonstrate the feasibility of ultrafast spin-resolved photoemission using free electron laser (FEL) radiation and investigate the effect of space charge on the detected spin polarization. The sample is exposed to the radiation of the FEL FLASH in Hamburg. Surprisingly, the measured spin polarization depends on the fluence of the FEL radiation: a higher FEL fluence reduces the measured spin polarization. Space-charge simulations can explain this effect. These findings have consequences for future spin-polarized photoemission experiments using pulsed photon sources.
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000169880 7001_ $$0P:(DE-H253)PIP1018225$$aSalvatella, Gerard$$b1
000169880 7001_ $$0P:(DE-H253)PIP1010445$$aMichlmayr, Thomas$$b2
000169880 7001_ $$0P:(DE-HGF)0$$aWetli, C.$$b3
000169880 7001_ $$0P:(DE-H253)PIP1013672$$aRamsperger, Urs$$b4
000169880 7001_ $$0P:(DE-H253)PIP1013679$$aBaehler, Thomas$$b5
000169880 7001_ $$0P:(DE-H253)PIP1006485$$aSorgenfrei, Florian$$b6
000169880 7001_ $$0P:(DE-H253)PIP1005334$$aBeye, Martin$$b7
000169880 7001_ $$0P:(DE-H253)PIP1013825$$aEschenlohr, Andrea$$b8
000169880 7001_ $$0P:(DE-H253)PIP1008858$$aPontius, Niko$$b9
000169880 7001_ $$0P:(DE-H253)PIP1012949$$aStamm, Christian$$b10
000169880 7001_ $$0P:(DE-H253)PIP1013658$$aHieke, Florian$$b11
000169880 7001_ $$0P:(DE-H253)PIP1011989$$aDell'Angela, Martina$$b12
000169880 7001_ $$0P:(DE-H253)PIP1013742$$ade Jong, Sanne$$b13
000169880 7001_ $$0P:(DE-H253)PIP1013831$$aKukreja, Roopali$$b14
000169880 7001_ $$0P:(DE-H253)PIP1005688$$aGerasimova, Natalia$$b15
000169880 7001_ $$0P:(DE-H253)PIP1000203$$aRybnikov, Vladimir$$b16
000169880 7001_ $$0P:(DE-H253)PIP1003486$$aRedlin, Harald$$b17
000169880 7001_ $$0P:(DE-H253)PIP1013671$$aRaabe, J.$$b18
000169880 7001_ $$0P:(DE-H253)PIP1002525$$aFoehlisch, Alexander$$b19
000169880 7001_ $$0P:(DE-H253)PIP1009622$$aDuerr, Hermann$$b20
000169880 7001_ $$0P:(DE-H253)PIP1001227$$aWurth, Wilfried$$b21
000169880 7001_ $$0P:(DE-HGF)0$$aPescia, D.$$b22
000169880 7001_ $$0P:(DE-H253)PIP1011307$$aVaterlaus, Andreas$$b23
000169880 7001_ $$0P:(DE-H253)PIP1009284$$aAcremann, Yves$$b24
000169880 773__ $$0PERI:(DE-600)1464444-7$$a10.1088/1367-2630/16/4/043031$$gVol. 16, no. 4, p. 043031 -$$n4$$p043031$$tNew journal of physics$$v16$$x1367-2630$$y2014
000169880 8564_ $$uhttp://iopscience.iop.org/1367-2630/16/4/043031/
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