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Photoionization of Polarized Atoms Applications to Free Atoms and Ferromagnets

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Selected Topics on Electron Physics

Part of the book series: Physics of Atoms and Molecules ((PAMO))

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Abstract

Discussion of connections between different phenomena observed in seemingly different situations usually helps to better understanding of the physics of underlying processes. Some time ago Farago1 discussed analogies and contrasts between light polarization and electron spin polarization. He showed that though in both cases the same Stokes vector formalism2 can be applied, the analogies between them have rather limited validity. We will discuss here the applicability of equations derived for the description of photoionization of free polarized atoms3,4 to photoemission from ferromagnets5,6. We show that qualitative features of photoemission from core levels of ferromagnets are correctly reproduced by equations derived for free polarized atoms, while for a quantitative description one should take into account also the solid state effects. Recently7 it was shown that the qualitative analysis of angle- and spin-resolved photoemission from core levels of nonmagnetic solids (in that case from Cu) can be also performed using the equations derived for free atoms8.

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References

  1. P.S.Farago, Analogies and contrasts between optical and electron spin polarization, Comments At Mol. Phys.6: 99 (1977).

    Google Scholar 

  2. P.S.Farago, Electron spin polarization, Rep. Prog. Phys.34: 1055 (1971).

    Article  ADS  Google Scholar 

  3. H.Klar, and RKleinpoppen, Angular distribution of photoelectrons from polarized atoms exposed to polarized radiation, J. Phys. B15: 933 (1982).

    Article  ADS  Google Scholar 

  4. N.A.Cherepkov, V.V.Kuznetsov, and V.AVerbitskii, Photoionization of polarized atoms, J. Phys. B28: 1221 (1995).

    Article  ADS  Google Scholar 

  5. N.A. Cherepkov, Origin of magnetic dichroism in angular resolved photoemission from ferromagnets, Phys. Rev. B50: 13813 (1994).

    Article  ADS  Google Scholar 

  6. N.A. Cherepkov, Origin of magnetic dichroism in angular resolved photoemission from ferromagnets, Phys. Rev. B50: 13813 (1994).

    Article  ADS  Google Scholar 

  7. Ch.Roth, F.U.Hillebrecht, W.G.Park, H.B.Rose, and E.Kisker, Spin polarization in Cu core-level photoemission with linearly polarized soft X rays, Phys. Rev. Lett.73: 1963 (1994).

    Article  ADS  Google Scholar 

  8. N.A.Cherepkov, Spin polarization of atomic and molecular photoelectrons, Adv. At. Mol. Phys.19: 395 (1983).

    Article  Google Scholar 

  9. J.Kessler, The “perfect” photoionization experiment, Comments At. Mol. Phys.10: 47 (1981).

    Google Scholar 

  10. U.Heinzmann, Experimental determination of the phase shift difference of continuum wavefunctions describing the photoionisation process of xenon atoms II, J. Phys. B13: 4367 (1980).

    Article  ADS  Google Scholar 

  11. N.A.Cherepkov, On the complete photoionization experiment, in: “Proc. Int. Workshop on Photoionization 1992”, U.Becker and U.Heinzmann, eds., AMS Press, New York (1993).

    Google Scholar 

  12. K.Blum, “Density Matrix Theory and Applications”, Plenum, New York (1981).

    Google Scholar 

  13. N.A.Cherepkov, and V.V.Kuznetsov, Optical activity of polarized atoms, J. Phys. B22: L 405 (1989).

    Google Scholar 

  14. S.Baier, A.N.Grum-Grzhimailo, and N.M.Kabachnik, Angular distribution of photoelectrons in resonant photoionization of polarized atoms, J. Phys. B27: 3363 (1994).

    Article  ADS  Google Scholar 

  15. R.N.Compton, J.A.D.Stockdale, C.D.Cooper, X.Tang, and P.Lambropoulos, Photoelectron angular distributions from multiphoton ionization of cesium atoms, Phys. Rev. A30: 1766 (1983).

    ADS  Google Scholar 

  16. J.S.Keller, J.E.Hunter, and R.S.Berry, Path dependence in resonant multiphoton excitation to autoionizing states of barium, Phys. Rev. A43: 2270 (1991).

    Article  ADS  Google Scholar 

  17. C.Kerling, N.Bòwering, and U.Heinzmann, Photoelectron angular distributions from laser-excited aligned Yb atoms ionized by vacuum ultraviolet radiation, J. Phys. B23: L629 (1990).

    Article  ADS  Google Scholar 

  18. S.Baier, M.Schulze, H.Staiger, P.Zimmermann, C.Lorenz, M.Pahler, J.Rüder, B.Sonntag, J.T.Costello, and L.Kiernan, Investigation of Na 2p53s3p resonances using angular resolved photoelectron spectroscopy of laser-aligned sodium atoms, J. Phys. B27: 1341 (1994).

    Article  ADS  Google Scholar 

  19. M.Pahler, C.Lorenz, E.V.Raven, J.Rüder, B.Sonntag, S.Baier, B.R.Müller, MSchulze, H.Staiger, P.Zimmermann, and N.M.Kabachnik, Angle-dependent photoelectron spectroscopy of laser-aligned atoms: Li, Phys. Rev. Lett. 68: 2285 (1992).

    Google Scholar 

  20. N.A.Cherepkov, L.V.Chernysheva, V.V.Kuznetsov, and S.K.Semenov, Photoionization of polarized excited Li atoms, J. Electron Spectrosc. Re lat. Phenom., to be published.

    Google Scholar 

  21. S.Shohl, D.Klar, N.A.Cherepkov, S.Baier, K.Ueda, and RHotop, Photoionization of polarized Ar*(4p J=3) atoms near threshold, to be published.

    Google Scholar 

  22. R.Parzynski, Circular dichroism of angular distributions of photoelectrons emitted from heavy polarized alkali atoms, Acta Phys. Pol. A57: 49 (1980).

    Google Scholar 

  23. RX.Dubs, S.N.Dixit, and V.McKoy, Circular dichroism in photoelectron angular distribution from adsorbed atoms, Phys. Rev. B32: 8389 (1985).

    Article  ADS  Google Scholar 

  24. N.A.Cherepkov, and G.Schönhense, Linear dichroism in photoemission from oriented molecules, Europhys. Lett.24: 79 (1993).

    Article  ADS  Google Scholar 

  25. N.A.Cherepkov, Circular and linear dichroism in atomic and molecular photoelectron emission, in: “Electronic and Atomic Collisions (Invited Papers of ICPEAC XVII)”, I.E.McCarthy and M.C. Standage, eds., Hilger, Bristol (1992).

    Google Scholar 

  26. L.Baumgarten, C.M.Schneider, H.Petersen, F.Schäfers, and J.Kirschner, Magnetic X-ray dichroism in core-level photoemission from ferromagnets, Phys. Rev. Lett.65: 492 (1990).

    Article  ADS  Google Scholar 

  27. M.Getzlaff, Ch.Ostertag, G.H.Fecher, N.A.Cherepkov, and G.Schònhense, Magnetic dichroism in photoemission with unpoplarized light, Phys. Rev. Lett.73: 3030 (1994).

    Article  ADS  Google Scholar 

  28. Ch.Roth, KB.Rose, F.U.Hillebrecht, and E.Kisker, Magnetic linear dichroism in soft X-ray core level photoemission from iron, Solid State Commun. 86: 647 (1993).

    Article  Google Scholar 

  29. L.E.Cuéllar, C.S.Feigerle, H.S.Carman, Jr., and R.N.Compton, Circular dichroism in photoelectron angular distributions for the 7P3/2 level of cesium, Phys. Rev. A43: 6437 (1991).

    Article  ADS  Google Scholar 

  30. R. L. Dubs, S.N.Dixit, and V.McKoy, unpublished.

    Google Scholar 

  31. C.H.Greene, and R.N.Zare, Photofragment alignment and orientation, Ann. Rev. Phys. Chem.33: 119 (1982).

    Article  ADS  Google Scholar 

  32. S.V.Bobashev, A.Yu.Elizarov, V.K.Prilipko, and N.A.Cherepkov, Linear and circular dichroism in two- step photoionization of Ba atoms, Laser Physics3: 751 (1993).

    Google Scholar 

  33. ChRoth, F.U.Hillebrecht, H.B.Rose, and E.Kisker, Linear magnetic dichroism in angular resolved Fe 3pcore level photoemission, Phys. Rev. Lett.70: 3479 (1993).

    Article  ADS  Google Scholar 

  34. G.Rossi, F.Sirotti, N.A.Cherepkov, F.Combet Farnoux, and G.Panaccione, 3p fine structure of ferromagnetic Fe and Co from photoemisson with linearly polarized light, Solid State Commun. 90: 557 (1994).

    Article  ADS  Google Scholar 

  35. H.Ebert, L.Baumgarten, C.M.Schneider, and J.Kirschner, Polarization dependence of the 2p-core-level photoemission spectra of Fe, Phys. Rev. B44: 4406 (1991).

    Article  ADS  Google Scholar 

  36. F.U.Hillebrecht, ChRoth, H.B.Rose, W.G.Park, E.Kisker, and N.A.Cherepkov, Magnetic linear dichroism in spin-resolved Fe 2p photoemission, Phys. Rev. B, submitted.

    Google Scholar 

  37. G. van der Laan, Angular resolved linear and circular dichroism in core-level photoemission of metallic systems, Phys. Rev. B51: 240 (1995).

    Article  ADS  Google Scholar 

  38. CM.Schneider, D.Venus, and J.Kirschner, Strong X-ray magnetic circular dichroism in a “forbidden geometry” observed via photoemission, Phys. Rev. B45: 5041 (1992).

    Article  ADS  Google Scholar 

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© 1996 Plenum Press

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Cherepkov, N.A. (1996). Photoionization of Polarized Atoms Applications to Free Atoms and Ferromagnets. In: Campbell, D.M., Kleinpoppen, H. (eds) Selected Topics on Electron Physics. Physics of Atoms and Molecules. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0421-0_33

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  • DOI: https://doi.org/10.1007/978-1-4613-0421-0_33

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4613-8044-3

  • Online ISBN: 978-1-4613-0421-0

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