Table I: The contributions of Fe 3 d and Te/Se p orbitals to the bands in Fe(Te 0 . 66 Se 0 . 34 ) near E$_{F}$ along the Γ $_{−}$X direction. periments have found incommensurate short-range mag- netic order below 50 K [12], however, our measurements with two different photon polarizations confirm the ab- sence of states near E$_{F}$ around X. Furthermore, no band splitting that is associated with the SDW in BaFe 2 As 2 and SrFe 2 As 2 is observed here. This might suggest that such a short range magnetic order should be very weak in Fe 1 . 04 (Te 0 . 66 Se 0 . 34 ). outer cylindrical Fermi surfaces near $_{Γ}$, and two electron- like Fermi surfaces near the M-point. There are no states near the Fermi energy around the X-point. Polarization dependence measurements further elucidate the symme- try of the band structure. The ARPES results qualita- tively agree with the DFT calculations. Compared with the iron-pnictides, although many aspects of the band structures are similar, there are also significant differ- ences, particularly in their electronic structures near Γ at the paramagnetic normal state. Our results provide a comprehensive picture on the electronic structure of Fe 1 . 04 (Te 0 . 66 Se 0 . 34 ), and shed new light on the role of anions in iron-based superconductors. 7 To summarize, we have studied the electronic struc- ture of Fe 1 . 04 (Te 0 . 66 Se 0 . 34 ). Both the ARPES and DFT calculations reveal one inner closed Fermi pocket and two Part of this work was performed at the Surface and In- terface Spectroscopy beamline, Swiss Light Source, Paul Scherrer Institute, Villigen, Switzerland. We thank C. Hess and F. Dubi for technical support. This work was supported by the NSFC, MOE, MOST (National Basic Research Program No.2006CB921300), and STCSM of China. Acknowledgments VII. CONCLUSION [1] Y. Kamihara et al. , J. Am. Chem. Soc., 130 , 3296 (2008). [2] X. H. Chen et al. , Nature, 453 , 761 (2008). [3] Z. A. Ren et al. , Chin. Phys. Lett. 25 , 2215 (2008). [4] M. Rotter et al. , Phys. Rev. B 78, 020503(R) (2008) [5] M. Rottor et al. , Phys. Rev. Lett. 101, 107006 (2008) [6] M. J. Pitcher et al. , Chemical Communications 5918 - 5920 (2008) [7] J.H. Tapp, et. al, Phys. Rev. B 78, 060505 (2008) [8] F. C. Hsu et al. , arXiv:0807.2369v2 [cond-mat.supr-con] [9] K. W. Yeh et al. , arXiv:0808.0474v2 [cond-mat.supr-con] [10] S. Margadonna et al. , Phys. Rev. B 80, 064506 (2009) [11] G.A. Sawatzky et al. arXiv:0808.1390v1 [cond-mat.super- con] [12] W. Bao et al. , Phys. Rev. L 102, 247001 (2009) [13] S. L. Li et al. , Phys. Rev. B 79, 054503 (2009) [14] F. Ma, Z.-Y. Lu, and T. Xiang, Phys. Rev. B 78, 224517 (2008) [15] C. Fang, et al. , Phys. Rev. B 77, 224509 (2008) [16] J. Dai et al. , Proc. Natl. Acad. Sci. U.S.A. 106, 4118 (2009) [17] F. Ma, W. Ji, J. Hu, Z. Lu and T. Xiang, Phys. Rev. Lett. 102, 177003 (2009) [18] C. Fang, B.A. Bernevig and J. Hu, Europhys. Lett. 86, 67005 (2009) [19] Cenke Xu and Jiangping Hu, arXiv: 0903.4477v1 [cond- mat.supr-con] [20] J. Dong, et al. , Europhys. Lett. 83, 27006 (2008) [21] K. Nakayama et al. , arXiv:0907.0763v1 [cond-mat.supr- con] [22] Y. Zhang, et al. arXiv:0904.4022v1 [cond-mat.super-con] [23] L. X. Yang et al. , Phys. Rev. Lett.102, 107002 (2009) [24] P. Giannozzi et al., http://www.quantum-espresso.org. [25] J. P. Perdew, K. Burke, and M. Ernzerhof, Phys. Rev. Lett. 77 , 3865 (1996). [26] D. Vanderbilt, Phys. Rev. B 41 , 7892 (1990). [27] D. H. Lu et al. , Nature 455, 81-84 (2008) [28] A. Subedi et al. , Phys. Rev. B 78, 134514(2008) [29] A. Damascelli Z. Hussain, and Z.-X. Shen, Rev. Mod. Phys. 75, (2003) [30] Y. Zhang et al. , Phys. Rev. Lett. 102, 127003 (2009) [31] Y. Xia et al. , Phys. Rev. Lett. 103, 037002 (2009) d$_{z}$ 2 d$_{xz}$ d$_{yz}$ d$_{x}$ $^{2}$$_{−}$y2 d$_{xy}$ p$_{z}$ p$_{x}$ + p$_{y}$ α 0.0391 0.6702 0 0.0182 0 0.0791 0.0767 β 0 0 0.6579 0 0.2359 0 0.0463 γ 0.0033 0.0434 0 0.9391 0 -0.0001 0.0069