Spinorbit-induced photoelectron spin polarization in angle-resolved photoemission from both atomic and condensed matter targets

Journal of Physics Condensed Matter

Volumn 24, Issue 17, 2012, Pages

  Heinzmann, Ulrich ^a   Dil, J Hugo ^b,c  

^a BIELEFELD UNIVERSITY   (Germany)

^b UNIVERSITY OF ZURICH   (Switzerland)

^c PAUL SCHERRER INSTITUTE   (Switzerland)

Author keywords

[No Author keywords available]

Indexed keywords

ANGLE-RESOLVED PHOTOELECTRON; ANGLE-RESOLVED PHOTOEMISSION; CHIRAL STRUCTURES; CIRCULARLY POLARIZED; COHERENT SUPERPOSITIONS; CONDENSED MATTER; ENERGY DISPERSIONS; FANO EFFECTS; FREE ATOMS; HIGH SPIN POLARIZATION; LINEARLY-POLARIZED RADIATIONS; MATRIX ELEMENTS; NON-MAGNETIC SOLIDS; PHASE SHIFT EFFECT; PHOTO-ELECTRON EMISSION; PHOTOEFFECT; PHOTOEMISSION PROCESS; RASHBA EFFECTS; SOLID SURFACE; SPIN COMPONENTS; SPIN ORBIT INTERACTIONS; SPIN-POLARIZED; TOPOLOGICAL INSULATORS;

ATOMS; EMISSION SPECTROSCOPY; MAGNETIC MATERIALS; PHASE SHIFT; PHOTOELECTRONS; PHOTOEMISSION; PHOTONS; SOLIDS; SPIN DYNAMICS; STEREOCHEMISTRY;

SPIN POLARIZATION;

COPPER;

ALGORITHM; CHEMISTRY; ELECTRON; EQUIPMENT DESIGN; LIGHT; MAGNETISM; METHODOLOGY; PHOTOCHEMISTRY; PHOTON; PROBABILITY; REVIEW; SPIN TRAPPING; X RAY PHOTOELECTRON SPECTROSCOPY;

ALGORITHMS; COPPER; ELECTRONS; EQUIPMENT DESIGN; LIGHT; MAGNETICS; PHOTOCHEMISTRY; PHOTOELECTRON SPECTROSCOPY; PHOTONS; PROBABILITY; SPIN TRAPPING;

EID: 84859601528     PISSN: 09538984     EISSN: 1361648X     Source Type: Journal    
DOI: 10.1088/0953-8984/24/17/173001     Document Type: Review

References (123)

1. Fano U 1969 Spin orientation of photoelectrons ejected by circularly polarized light Phys. Rev. 178 1316
2. Heinzmann U and Cherepkov N A 1996 VUV and soft x-ray photoionization studies Spin polarization in photoionization (Physics of Atoms and Molecules) ed U Becker and D A Shirley (New York: Plenum) pp 52159 and references therein
3. Kessler J 1985 Polarized Electrons 2nd edn (Berlin: Springer)
4. LaShell S, McDougall B A and Jensen E 1996 Spin splitting in an Au(111) surface state band observed with angle resolved photoelectron spectroscopy Phys. Rev. Lett. 77 341922 (Pubitemid 126624294)
5. Fano U 1970 Spinorbit coupling: a weak force with conspicuous effects Comment. At. Mol. Phys. 2 306
6. Heinzmann U 1980 Spin polarized photoelectrons from atoms and molecules Appl. Opt. 19 408791
7. Feder R 1985 Polarized Electrons in Surface Physics (Singapore: World Scientific)
8. Kirschner J 1985 Polarized Electrons At Surfaces (Berlin: Springer)
9. Heinzmann U 1987 Angle-, energy- and spin-resolved photoelectron emission using circularly polarized synchrotron radiation Phys. Scr. T17 7788
10. Heinzmann U 1990 Photoemission with circularly polarized photons Photoemission and Absorption Spectroscopy of Solids and Interfaces with Synchrotron Radiation ed M Campagna and R Rosei (Amsterdam: North-Holland) pp 46988
11. Heinzmann U and Schönhense G 1985 Spin-resolved photoemission from nonmagnetic metals and adsorbates Polarized Electrons in Surface Physics ed R Feder (Singapore: World Scientific) chapter 11 p 467
12. Dil J H 2009 Spin- and angle resolved photoemission on non-magnetic low dimensional systems J. Phys.: Condens. Matter 21 403001
13. Heinzmann U, Kessler J and Lorenz J 1970 Wavelength dependence of the Fano effect Phys. Rev. Lett. 25 1325
14. Heinzmann U, Kessler J and Lorenz J 1970 Elektronen-Spinpolarisation bei der Photoionisation unpolarisierter Cäsiumatome mit zirkularpolarisiertem Licht Z. Phys. 240 42
15. Heinzmann U, Kessler J and Ohnemus B 1971 Polarized electrons by photoemission from solid alkalis Phys. Rev. Lett. 27 1696
16. Heinzmann U, Jost K, Kessler J and Ohnemus B 1972 Elektronen- Spinpolarisation beim Photoeffekt mit zirkularpolarisiertem Licht an Alkalischichten Z. Phys. 251 354
17. Pierce D T and Meier F 1976 Photoemission of spin polarized electrons from GaAs Phys. Rev. B 13 5484
18. Eyers A, Schäfers F, Schönhense G, Heinzmann U, Oepen H P, Hünlich K, Kirschner J and Borstel G 1984 Characterization of symmetry properties of Pt(111) electron bands by means of angle-, energy- and spin-resolved photoemission with circularly polarized synchroton radiation Phys. Rev. Lett. 52 155962
19. 4,5 case Phys. Rev. Lett. 76 3923
20. Heinzmann U 1980 Experimental determination of the phase differences of continuum wavefunctions describing the photoionisation process of xenon atoms I. Measurements of the spin polarisations of photoelectrons and their comparison with theoretical results J. Phys. B: At. Mol. Opt. Phys. 13 4353
21. Heinzmann U 1977 An apparatus for the production of circularly polarised VUV radiation J. Phys. E: Sci. Instrum. 10 1001
22. Huth-Fehre T, Mank A, Drescher M, Böwering N and Heinzmann U 1990 Rotationally resolved Fano effect of HI molecules: an experimental study using coherent vacuum-ultraviolet radiation Phys. Rev. Lett. 64 396
23. Heinzmann U 1978 New vacuum ultraviolet absorption data for lead vapour obtained by spin polarisation measurements J. Phys. B: At. Mol. Opt. Phys. 11 399
24. Müller N, Lischke T, Weiss M R and Heinzmann U 2001 Spin resolved photoelectron spectroscopy from paramagnetic Gd at the 4d → 4f resonance using circularly-polarized radiation, a cross-comparison with MCD J. Electron. Spectrosc. 114116 777
25. Wöhlecke M and Borstel G 1981 Group-theoretical study of light-induced electron-spin polarization at the Γ point of cubic crystals Phys. Status Solidi b 107 653
26. Cherepkov N A 1983 Spin polarization of atomic and molecular photoelectrons Adv. Atom Mol. Phys. 19 395447
27. Thole B and van der Laan G 1991 Spin polarization and magnetic dichroism in photoemission from core and valence states in localized magnetic systems Phys. Rev. B 44 12424
28. van der Laan G and Thole B 1993 Spin polarization and magnetic dichroism in photoemission from core and valence states in localized magnetic systems: emission from open shells II Phys. Rev. B 48 21023
29. Thole B and van der Laan G 1994 Spin polarization and magnetic dichroism in photoemission from core and valence states in localized magnetic systems: angular distributions III Phys. Rev. B 49 961331
30. Böwering N, Salzmann M, Müller M, Klausing H-W and Heinzmann U 1990 Photoelectron spin-polarization approaching unity: photoionization of Tl Phys. Scr. 41 42932
31. Schönhense G, Eyers A, Friess U, Schäfers F and Heinzmann U 1985 Highly spinpolarized photoemission near threshold from physisorbed xenon and krypton atoms Phys. Rev. Lett. 54 54750
32. Müller N, Kessler B, Schmiedeskamp B, Schönhense G and Heinzmann U 1987 Spin-resolved photoemission from Ir(111): transitions into a secondary band and energetic position of the final state bands Solid State Commun. 61 18792 (Pubitemid 18579602)
33. Noffke J and Fritsche L 1982 Band structure calculation and photoemission analysis of iridium J. Phys. F: Met. Phys. 12 92132
34. Wöhlecke M and Borstel G 1984 Optical Orientation, Modern Problems in Condensed Matter Sciences vol 8 ed F Meier and B P Zakharchenya (Amsterdam: Elsevier) pp 4233
35. Drescher M, Snell G, Kleineberg U, Stock H-J, Müller N, Heinzmann U and Brookes N B 1997 Characterization of the helical undulator HELIOS I in the 520 to 930 eV range using a multilayer polarimeter Rev. Sci. Instrum. 68 193944 (Pubitemid 127639122)
36. Khalil T, Schmidtke B, Drescher M, Müller N and Heinzmann U 2002 Experimental verification of quadrupoledipole interference in spin-resolved photoionization Phys. Rev. Lett. 89 053001
37. Heinzmann U, Schönhense G and Wolcke A 1980 Spin polarized photoelectrons from unpolarized lead atoms exposed to unpolarized radiation Proc. Int. Workshop on Coherence and Correlation in Atomic Collisions ed H Kleinpoppen and J F Williams (New York: Plenum) pp 60712
38. Heinzmann U, Schönhense G and Kessler J 1979 Polarization of photoelectrons ejected by unpolarized light from xenon atoms Phys. Rev. Lett. 42 16035
39. Kaesdorf S, Schönhense G and Heinzmann U 1983 Angle- and spin resolved photoelectron spectroscopy on some halogen molecules Ann. Isr. Phys. Soc. 6 17981
40. Schönhense G, Dzidzonou V, Kaesdorf S and Heinzmann U 1984 Spin polarized photoelectrons from randomly oriented halogen molecules by unpolarized radiation Phys. Rev. Lett. 52 8114
41. Salzmann M, Böwering N, Klausing H W, Kuntze R and Heinzmann U 1994 Spin resolved photoelectron spectroscopy of HBr in the resonance region of electron autoionization J. Phys. B: At. Mol. Opt. Phys. 27 198192
42. Schönhense G 1980 Angular dependence of the polarization of photoelectrons ejected by plane-polarized radiation from argon and xenon atoms Phys. Rev. Lett. 44 6403
43. Heinzmann U 1980 Experimental determination of the phase differences of continuum wavefunctions describing the photoionisation process at xenon atoms. II. Evaluation of the matrix elements and the phase differences and their comparison with data in the discrete spectral range in application of the multi channel quantum defect theory J. Phys. B: At. Mol. Opt. Phys. 13 436781
44. Cherepkov N A 1979 Spin polarization of photoelectrons ejected from unpolarised atoms J. Phys. B: At. Mol. Opt. Phys. 12 127996
45. Huang K N, Johnson W R and Cheng K T 1979 Theoretical study of spin polarisation of photoelectrons from noble gases Phys. Rev. Lett. 43 165861
46. Geiger J 1977 Energy loss spectra of xenon and krypton and their analysis by energy-dependent multichannel quantum defect theory Z. Phys. A 282 12941
47. Schmidtke B, Drescher M, Cherepkov N A and Heinzmann U 2000 On the impossibility to perform a complete valence-shell photoionization experiment with closed-shell atoms J. Phys. B: At. Mol. Opt. Phys. 33 245165
48. Kessler B, Müller N, Schmiedeskamp B, Vogt B and Heinzmann U 1990 Spin resolved off-normal photoemission from xenon adsorbates in comparison with free atom photoionization Z. Phys. D 17 116
49. Stoppmanns P, David R, Müller N and Heinzmann U 1994 Angle and spin resolved Auger and photoelectron spectroscopy on Rb-layers by means of circularly polarized VUV radiation Z. Phys. D 30 2513
50. Irmer N, David R, Schmiedeskamp B and Heinzmann U 1992 Experimental verification of a spin effect in photoemission: polarized electrons due to phase shift differences in the normal emission from Pt(100) by unpolarized radiation Phys. Rev. B 45 3849
51. Irmer N, Frentzen F, Schmiedeskamp B and Heinzmann U 1994 Spin polarized photoelectrons with unpolarized light in normal emission from Pt(110) Surf. Sci. 307309 1114
52. Schmiedeskamp B, Irmer N, David R and Heinzmann U 1991 A new spin effect in photoemission with unpolarized light: experimental evidence of spin polarized electrons in normal emission from Pt(111) and Au(111) Appl. Phys. A 53 418
53. Rose H B, Fanelsa A, Kinoshita T, Roth Ch, Hillebrecht F U and Kisker E 1996 Spinorbit-induced spin polarization in W4f photoemission Phys. Rev. B 53 16304
54. Yu S-W, David R, Irmer N, Schmiedeskamp B, Müller N, Heinzmann U and Cherepkov N A 1998 Determination of phase differences of transition matrix elements from Pt(110) by means of spin-resolved photoemission with circularly and linearly polarized radiation Surf. Sci. 416 396402 (Pubitemid 128410006)
55. Leschik G, Courths R, Wern H, Hüfner S, Eckardt H and Noffke J 1984 Band structure of platinum from angle resolved photoemission experiments Solid State Commun. 52 2215 (Pubitemid 14665226)
56. Noffke J 1995 private communication
57. Published in Irmer N, Frenzen F, David R, Stoppmanns P, Schmiedeskamp B and Heinzmann U 1995 Photon energy dependence of spin-resolved photoemission spectra in normal emission from Pt(110) by linearly polarized light Surf. Sci. 331 1147
58. Cavalieri A L et al 2007 Attosecond spectroscopy in condensed matter Nature 449 102932 (Pubitemid 350014600)
59. Goulielmakis E et al 2004 Direct measurement of light waves Science 305 1267
60. Kazansky A K and Echenique P M 2009 One-electron model for the electronic response of metal surfaces to subfemtosecond photoexcitation Phys. Rev. Lett. 102 177401
61. Baggesen J C and Madsen L B 2008 Secondary electron cascade in attosecond photoelectron spectroscopy from metals Phys. Rev. A 78 032903
62. Baggesen J C and Madsen L B 2009 Theory for time-resolved measurements of laser-induced electron emission from metal surfaces Phys. Rev. A 80 030901
63. Zhang C H and Thumm U 2009 Attosecond photoelectrons spectroscopy of metal surfaces Phys. Rev. Lett. 102 123601
64. Lemell C, Solleder B, Tökesi K and Burgdörfer J 2009 Simulation of attosecond streaking of electrons emitted from a tungsten surface Phys. Rev. A 79 062901
65. Zhang C H and Thumm U 2011 Streaking and Wigner time delays in photoemission from atoms and surfaces Phys. Rev. A 84 033401
66. Wigner E P 1955 Lower limit for the energy derivative of the scattering phase shift Phys. Rev. 98 145
67. Smith T F 1960 Lifetime matrix in collision theory Phys. Rev. 118 349
68. Schäfers F, Heckenkamp Ch, Müller M, Radojević V and Heinzmann U 1990 Hg 5d and 6s: multi-channel quantum-defect analysis of experimental data Phys. Rev. A 42 2603
69. Tamura E, Piepke W and Feder R 1987 New spin polarization effect in photemission from nonmagnetic surfaces Phys. Rev. Lett. 59 9347
70. Schmiedeskamp B, Vogt B and Heinzmann U 1988 Experimental verification of a new spin-polarization effect in photoemission: polarized photoelectrons from Pt(111) with linearly polarized radiation in normal incidence and normal emission Phys. Rev. Lett. 60 6514
71. Mayer S and Kessler J 1995 Experimental verification of electron optic dichroism Phys. Rev. Lett. 74 48036
72. Nolting C, Mayer S and Kessler J 1997 Electron dichroismnew data and an experimental cross-check J. Phys. B: At. Mol. Opt. Phys. 30 54919 (Pubitemid 127573380)
73. Ray K, Ananthavel S P, Waldeck D H and Naaman R 1999 Asymmetric scattering of polarized electrons by organized organic films of chiral molecules Science 283 8146
74. Böwering N, Lischke T, Schmidtke B, Müller N, Khalil T and Heinzmann U 2001 Asymmetry in photoelectron emission from chiral molecules induced by circularly polarized light Phys. Rev. Lett. 86 1187
75. Göhler B, Hamelbeck V, Markus T Z, Kettner M, Hanne G F, Vager Z, Naaman R and Zacharias H 2011 Spin selectivity in electron transmission through self-assembled monolayers of double stranded DNA Science 331 8947
76. Dresselhaus G 1955 Spinorbit coupling effects in zinc blende structures Phys. Rev. 100 580
77. Bychkov Y A and Rashba E I 1984 Oscillatory effects and the magnetic susceptibility of carriers in inversion layers J. Phys. C: Solid State Phys. 17 603945
78. Hoesch M, Muntwiler M, Petrov V N, Hengsberger M, Patthey L, Shi M, Falub M, Greber T and Osterwalder J 2004 Spin structure of the Shockley surface state on Au(111) Phys. Rev. B 69 241401
79. Muntwiler M, Hoesch M, Petrov V, Hengsberger M, Patthey L, Shi M, Falub M, Greber T and Osterwalder J 2004 Spin- and angle-resolved photoemission spectroscopy study of the Au(111) Shockley surface state J. Electron Spectrosc. Relat. Phenom. 137-140 11923
80. Henk J, Hoesch M, Osterwalder J, Ernst A and Bruno P 2004 Spinorbit coupling in the L gap surface states of Au(111): spin-resolved photoemission experiments and first principles calculations J. Phys.: Condens. Matter 16 758197
81. Koroteev Yu M, Bihlmayer G, Gayone J E, Chulkov E V, Blügel S, Echenique P M and Hofmann Ph 2004 Strong spinorbit splitting on Bi surfaces Phys. Rev. Lett. 93 046403
82. Hirahara T et al 2007 Direct observation of spin splitting in bismuth surface states Phys. Rev. B 76 153305
83. Bihlmayer G, Koroteev Y M, Echenique P M, Chulkov E V and Blügel S 2006 The Rashba-effect at metallic surfaces Surf. Sci. 600 388891 (Pubitemid 44467955)
84. Nagano M, Kodama A, Shishidou T and Oguchi T 2009 A first-principle study on the Rashba effect in surface systems J. Phys.: Condens. Matter 21 064239
85. Ast C R, Henk J, Ernst A, Moreschini L, Falub M C, Pacilé D, Bruno P, Kern K and Grioni M 2007 Giant spin splitting through surface alloying Phys. Rev. Lett. 98 186807
86. Meier F, Dil H, Lobo-Checa J, Patthey L and Osterwalder J 2008 Quantitative vectorial spin analysis in angle-resolved photoemission: Bi/Ag(111) and Pb/Ag(111) Phys. Rev. B 77 165431
87. Lobo-Checa J, Meier F, Dil J-H, Okuda T, Corso M, Petrov V N, Hengsberger M, Patthey L and Osterwalder J 2010 Robust spin polarization and spin textures on stepped Au(111) surfaces Phys. Rev. Lett. 104 187602
88. Crain J N, Kirakosian A, Altmann K N, Bromberger C, Erwin S C, McChesney J L, Lin J-L and Himpsel F J 2003 Fractional band filling in an atomic chain structure Phys. Rev. Lett. 90 176805
89. Okuda T et al 2010 Large out-of-plane spin polarization in a spin-splitting one-dimensional metallic surface state on Si(557)Au Phys. Rev. B 82 161410(R)
90. Wells J W et al 2009 Nondegenerate metallic states on Bi(114): a one-dimensional topological metal Phys. Rev. Lett. 102 096802
91. Krupin O, Bihlmayer G, Starke K, Gorovikov S, Prieto J E, Dobrich K, Blügel S and Kaindl G 2005 Rashba effect at magnetic metal surfaces Phys. Rev. B 71 201403
92. Meier F 2010 PhD Thesis University of Zurich
93. Bentmann H, Kuzumaki T, Bihlmayer G, Blügel S, Chulkov E V, Reinert F and Sakamoto K 2011 Spin orientation and sign of the Rashba splitting in Bi/Cu(111) Phys. Rev. B 84 115426
94. Budde K, Abram E, Yeh V and Tringides M C 2000 Uniform, self-organized, seven-step height Pb/Si(111)-(7 × 7) islands at low temperatures Phys. Rev. B 61 R10602
95. Mans A, Dil J-H, Ettema A R H F and Weitering H H 2002 Quantum electronic stability and spectroscopy of ultrathin Pb films on Si(111)7 × 7 Phys. Rev. B 66 195410
96. Upton M H, Wei C M, Chou M Y, Miller T and Chiang T-C 2004 Thermal stability and electronic structure of atomically uniform Pb films on Si(111) Phys. Rev. Lett. 93 026802
97. Dil J H, Kim J W, Kampen Th, Horn K and Ettema A R H F 2006 Electron localization in metallic quantum wells: Pb versus In on Si(111) Phys. Rev. B 73 161308
98. Chiang T C 2000 Photoemission studies of quantum well states in thin films Surf. Sci. Rep. 39 181235
99. Dil J-H, Kim J W, Gokhale S, Tallarida M and Horn K 2004 Self-organization of Pb thin films on Cu(111) induced by quantum size effects Phys. Rev. B 70 045405
100. Dil J H, Meier F, Lobo-Checa J, Pathey L, Bihlmayer G and Osterwalder J 2008 Rashba-type spinorbit splitting of quantum well states in ultrathin Pb films Phys. Rev. Lett. 101 266802
101. Slomski B, Meier F, Osterwalder J and Dil J H 2011 Controlling the effective mass of quantum well states in Pb/Si(111) by interface engineering Phys. Rev. B 83 035409
102. Slomski B, Landolt G, Meier F, Patthey L, Bihlmayer G, Osterwalder J and Dil J H 2011 Manipulating the Rashba-type spin splitting and spin texture of Pb quantum well states Phys. Rev. B 84 193406
103. Hasan M Z and Kane C L 2010 Topological insulators Rev. Mod. Phys. 82 304567
104. Frantzeskakis E and Grioni M 2011 Anisotropy effects on Rashba and topological insulator spin-polarized surface states: a unified phenomenological description Phys. Rev. B 84 155453
105. Hsieh D, Qian D, Wray L, Xia Y, Hor Y S, Cava R J and Hasan M Z 2008 A tunable topological insulator in the spin helical Dirac transport regime Nature 452 9704 (Pubitemid 351606144)
106. Hsieh D et al 2009 Observation of unconventional quantum spin textures in topological insulators Science 323 91922
107. Xia Y et al 2009 Observation of a large-gap topological-insulator class with a single Dirac cone on the surface Nature Phys. 5 398
108. 3 with a single Dirac cone on the surface Nature Phys. 5 438
109. Hsieh D et al 2009 A tuneable topological insulator in the spin helical Dirac transport regime Nature 460 1101
110. 3 Phys. Rev. Lett. 103 266801
111. Souma S, Kosaka K, Sato T, Komatsu M, Takayama A, Takahashi T, Kriener M, Segawa K and Ando Y 2011 Direct measurement of the out-of-plane spin texture in the Dirac-cone surface state of a topological insulator Phys. Rev. Lett. 106 216803
112. 3 arXiv:1101.3985
113. Fano U 1969 Spin orientation of photoelectrons: erratum and addendum Phys. Rev. 184 250
114. Eremeev S V et al 2012 Atom-specific spin mapping and buried topological states in a homologous series of topological insulators Nature Commun. 3 635
115. Baum G, Lubell M S and Raith W 1972 Measurement of the spinorbit perturbation in the P-state continuum of heavy alkali-metal atoms: K, Rb and Cs Phys. Rev. A 5 1073
116. Kimura A et al 2010 Strong Rashba-type spin polarization of the photocurrent from bulk continuum states: experiment and theory for Bi(111) Phys. Rev. Lett. 105 076804
117. Müller N et al 2006 Interference of spin states in resonant photoemission induced by circularly polarized light from magnetized Gd Phys. Rev. B 74 161401
118. Heinzmann U, Heuer H and Kessler J 1975 Spin-polarized electrons from autoionizing transitions in thallium Phys. Rev. Lett. 34 4414
119. Meier F, Petrov V, Mirhosseini H, Patthey L, Henk J, Osterwalder J and Dil J H 2011 Interference of spin states in photoemission from Sb/Ag(111) surface alloys J. Phys.: Condens. Matter 23 072207
120. Starke K, Navas E, Arenholz E, Hu Z, Baumgarten L, van der Laan G, Chen C T and Kaindl G 1997 Magnetic circular dichroism in 4d → 4f resonant photoemission and photoabsorption of Gd metal Phys. Rev. B 55 26725
121. Cherepkov N A and Kuznetsov V V 1989 Optical activity of polarised atoms J. Phys. B: At. Mol. Opt. Phys. 22 L405
122. 3+ single-molecule- magnets and of manganese compounds as reference layers J. Phys.: Condens. Matter 23 266001
123. Khanra S et al 2008 Star-shaped molecule of MnO core with an S = 10 high-spin state. A theoretical and experimental study with XPS, XMCD and other magnetic methods Inorg. Chem. 47 460517