High-resolution, hard x-ray photoemission investigation of BaFe2 As2: Moderate influence of the surface and evidence for a low degree of Fe3d-As4p hybridization of electronic states near the Fermi energy

Physical Review B - Condensed Matter and Materials Physics

Volumn 79, Issue 11, 2009, Pages

  De Jong, S ^a   Huang, Y ^a   Huisman, R ^a   Massee, F ^a   Thirupathaiah, S ^b   Gorgoi, M ^b   Schaefers, F ^b   Follath, R ^b   Goedkoop, J B ^a   Golden, M S ^a  

^a UNIVERSITY OF AMSTERDAM   (Netherlands)

^b HAHN MEITNER INSTITUT   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 65249141662     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.79.115125     Document Type: Article

References (40)

1. Y. Kamihara, T. Watanabe, M. Hirano, and H. Hosono, J. Am. Chem. Soc. 130, 3296 (2008) 10.1021/ja800073m
2. Ren Zhi-An, Lu Wei, Yang Jie, Yi Wei, Shen Xiao-Li, Zheng-Cai, Che Guang-Can, Dong Xiao-Li, Sun Li-Ling, Zhou Fang, and Zhao Zhong-Xian, Chinese Phys. Lett. 25, 2215 (2008). 10.1088/0256-307X/25/6/080
3. A. Damascelli, Z. Hussain, and Z.-X. Shen, Rev. Mod. Phys. 75, 473 (2003). 10.1103/RevModPhys.75.473
4. Ø. Fischer, M. Kugler, I. Maggio-Aprile, C. Berthod, and C. Renner, Rev. Mod. Phys. 79, 353 (2007). 10.1103/RevModPhys.79.353
5. D. H. Lu, M. Yi, S.-K. Mo, A. S. Erickson, J. Analytis, J.-H. Chu, D. J. Singh, Z. Hussain, T. H. Geballe, I. R. Fisher, and Z.-X. Shen, Nature (London) 455, 81 (2008). 10.1038/nature07263
6. C. Liu, G. D. Samolyuk, Y. Lee, N. Ni, T. Kondo, A. F. Santander-Syro, S. L. Bud'ko, J. L. McChesney, E. Rotenberg, T. Valla, A. V. Fedorov, P. C. Canfield, B. N. Harmon, and A. Kaminski, Phys. Rev. Lett. 101, 177005 (2008). 10.1103/PhysRevLett.101.177005
7. H. Ding, P. Richard, K. Nakayama, K. Sugawara, T. Arakane, Y. Sekiba, A. Takayama, S. Souma, T. Sato, T. Takahashi, Z. Wang, X. Dai, Z. Fang, G. F. Chen, J. L. Luo, and N. L. Wang, Europhys. Lett. 83, 47001 (2008). 10.1209/0295-5075/83/47001
8. D. V. Evtushinsky, D. S. Inosov, V. B. Zabolotnyy, A. Koitzsch, M. Knupfer, B. Buchner, G. L. Sun, V. Hinkov, A. V. Boris, C. T. Lin, B. Keimer, A. Varykhalov, A. A. Kordyuk, and S. V. Borisenko, Phys. Rev. B 79, 054517 (2009). 10.1103/PhysRevB.79.054517
9. M. C. Boyer, Kamalesh Chatterjee, W. D. Wise, G. F. Chen, J. L. Luo, N. L. Wang, and E. W. Hudson, arXiv:0806.4400 (unpublished).
10. Yi Yin, M. Zech, T. L. Williams, X. F. Wang, G. Wu, X. H. Chen, and J. E. Hoffman, arXiv:0810.1048 (unpublished).
11. D. Hsieh, Y. Xia, L. Wray, D. Qian, K. Gomes, A. Yazdani, G. F. Chen, J. L. Luo, N. L. Wang, and M. Z. Hasan, arXiv:0812.2289 (unpublished).
12. A. Ohtomo and H. Y. Hwang, Nature (London) 427, 423 (2004). 10.1038/nature02308
13. H. Chen, Y. Ren, Y. Qiu, Wei Bao, R. H. Liu, G. Wu, T. Wu, Y. L. Xie, X. F. Wang, Q. Huang, and X. H. Chen, Europhys. Lett. 85, 17006 (2009). 10.1209/0295-5075/85/17006
14. Jiun-Haw Chu, James G. Analytis, Chris Kucharczyk, and Ian R. Fisher, Phys. Rev. B 79, 014506 (2009). 10.1103/PhysRevB.79.014506
15. F. Massee, Y. Huang, R. Huisman, S. de Jong, M. S. Golden, and J. B. Goedkoop, arXiv:0812.4536, (unpublished).
16. A. Fanelsa, R. Schellenberg, F. U. Hillebrecht, E. Kisker, J. G. Menchero, A. P. Kaduwela, C. S. Fadley, and M. A. Van Hove, Phys. Rev. B 54, 17962 (1996). 10.1103/PhysRevB.54.17962
17. F. Schaefers, M. Mertin, and M. Gorgoi, Rev. Sci. Instrum. 78, 123102 (2007). 10.1063/1.2808334
18. Due to the extreme grazing incidence geometry necessary to better match the inelastic mean-free path length of the photoelectrons and the penetration depth of the hard x rays, it is unavoidable to also pick up signals from the sample mounting.
19. H. Ding, K. Nakayama, P. Richard, S. Souma, T. Sato, T. Takahashi, M. Neupane, Y.-M. Xu, Z.-H. Pan, A. V. Federov, Z. Wang, X. Dai, Z. Fang, G. F. Chen, J. L. Luo, and N. L. Wang, arXiv:0812.0534 (unpublished).
20. Although the hard x-ray and VUV valence-band spectra in Fig. 2 are taken with different temperatures, it was checked and confirmed that data taken at room temperature with VUV radiation did not differ significantly from the low-temperature data.
21. J. J. Yeh and I. Lindau, At. Data Nucl. Data Tables 32, l (1985). These listed values, used throughout this document, are values for the atomic PIXs and are not necessarily directly applicable to more complicated compounds but can be well used as an estimate to the real values. 10.1016/0092-640X(85)90016-6
22. The literature spectrum of Fe (111) shown in Fig. 1 has a small satellite around a binding energy of 712 eV, which is due to the fact that these data were taken with a Mgkα lab source. This feature is thus not a property of the Fe (111) Fe2p core-level line shape.
23. We note that, due to the small angular acceptance of the SES100 analyzer, the k -space integration of the hν=125 eV spectra is over only part of the 2D Brillouin zone. The depicted spectra are integrated over 40% of the Brillouin zone area around Γ. Using a polar rotation of the sample it was checked and confirmed that integration around different parts of the Brillouin zone, for instance, (π,0), yielded very similar spectra.
24. J. Wu, Ph. Phillips, and A. H. Castro Neto, Phys. Rev. Lett. 101, 126401 (2008). 10.1103/PhysRevLett.101.126401
25. D. R. Garcia, C. Jozwiak, C. G. Hwang, A. Fedorov, S. M. Hanrahan, S. D. Wilson, C. R. Rotundu, B. K. Freelon, R. J. Birgeneau, E. Bourret-Courchesne, and A. Lanzara, Phys. Rev. B 78, 245119 (2008). 10.1103/PhysRevB.78.245119
26. G. A. Sawatzky, I. S. Elfimov, J. van den Brink, and J. Zaanen, arXiv:0808.1390 (unpublished).
27. W. Malaeb, T. Yoshida, T. Kataoka, A. Fujimori, M. Kubota, K. Ono, H. Usui, K. Kuroki, R. Arita, H. Aoki, Y. Kamihara, M. Hirano, and H. Hosono, J. Phys. Soc. Jpn., 77, 093714 (2008). 10.1143/JPSJ.77.093714
28. A. Koitzsch, D. Inosov, J. Fink, M. Knupfer, H. Eschrig, S. V. Borisenko, G. Behr, A. Köhler, J. Werner, B. Büchner, R. Follath, and H. A. Dürr, Phys. Rev. B 78, 180506 (R) (2008). 10.1103/PhysRevB.78.180506
29. E. Z. Kurmaev, R. G. Wilks, A. Moewes, N. A. Skorikov, Yu. A. Izyumov, L. D. Finkelstein, R. H. Li, and X. H. Chen, Phys. Rev. B 78, 220503 (R) (2008). 10.1103/PhysRevB.78.220503
30. M. K. Bahl and R. L. Watson, Surf. Sci. 54, 540 (1976). 10.1016/0039-6028(76)90202-8
31. S. Hüfner, Photoelectron Spectroscopy (Springer-Verlag, Berlin, 1995).
32. M. C. Schabel, C. H. Park, A. Matsuura, Z. X. Shen, D. A. Bonn, X. Liang, and W. N. Hardy, Phys. Rev. B 57, 6090 (1998) 10.1103/PhysRevB.57.6090
33. V. B. Zabolotnyy, S. V. Borisenko, A. A. Kordyuk, J. Geck, D. S. Inosov, A. Koitzsch, J. Fink, M. Knupfer, B. Buchner, S. L. Drechsler, H. Berger, A. Erb, M. Lambacher, L. Patthey, V. Hinkov, and B. Keimer, Phys. Rev. B 76, 064519 (2007) 10.1103/PhysRevB.76.064519
34. M. A. Hossain, J. D. F. Mottershead, D. Fournier, A. Botswick, J. L. McChesney, E. Rotenberg, R. Liang, W. N. Hardy, G. A. Sawatzky, I. S. Elfimov, D. A. Bonn, and A. Damascelli, Nat. Phys. 4, 527 (2008). 10.1038/nphys998
35. D. E. Eastman, T.-C. Chiang, P. Heimann, and F. J. Himpsel, Phys. Rev. Lett. 45, 656 (1980). 10.1103/PhysRevLett.45.656
36. A. B. McLean, Surf. Sci. Lett. 220, L 671 (1989) 10.1016/0039-6028(89) 90456-1
37. J. W. Davenport, R. E. Watson, M. L. Perlman, and T. K. Sham, Solid State Commun. 40, 999 (1981) 10.1016/0038-1098(81)90053-3
38. W. Mönch, Solid State Commun. 58, 215 (1986). 10.1016/0038-1098(86) 90846-X
39. P. E. Gregory and W. E. Spicer, Phys. Rev. B 10.1103/PhysRevB.13.725 13, 725 (1976);
40. D. J. Chadi, Phys. Rev. B 18, 1800 (1978). 10.1103/PhysRevB.18.1800