Symmetry-breaking orbital anisotropy observed for detwinned Ba(Fe 1-xCox)2As2 above the spin density wave transition

Proceedings of the National Academy of Sciences of the United States of America

Volumn 108, Issue 17, 2011, Pages 6878-6883

  Yi, Ming ^a,b   Luc, Donghui ^c   Chu, Jiun Haw ^a,b   Analytis, James G ^a,b   Sorini, Adam P ^a   Kemper, Alexander F ^a   Moritz, Brian ^a   Mo, Sung Kwan ^d   Moore, Rob G ^a   Hashimoto, Makoto ^a,b,d   Lee, Wei Sheng ^a   Hussain, Zahid ^d   Devereaux, Thomas P ^a,b   Fisher, Ian R ^a,b   Shen, Zhi Xun ^a,b  

^a SLAC NATIONAL ACCELERATOR LABORATORY   (United States)

^b STANFORD UNIVERSITY   (United States)

^c SLAC NATIONAL ACCELERATOR LABORATORY   (United States)

^d LAWRENCE BERKELEY NATIONAL LABORATORY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ARSENIC; BARIUM;

ANISOTROPY; ARTICLE; CHEMICAL MODIFICATION; CONDUCTANCE; HIGH TEMPERATURE; MAGNETISM; NEUTRON SCATTERING; PRIORITY JOURNAL; SCANNING TUNNELING MICROSCOPY; SUPERCONDUCTOR;

EID: 79955569370     PISSN: 00278424     EISSN: 10916490     Source Type: Journal    
DOI: 10.1073/pnas.1015572108     Document Type: Article

References (42)

1. Kivelson SA, Fradkin E, Emery VJ (1998) Electronic liquid-crystal phases of a doped Mott insulator. Nature 393:550-553. (Pubitemid 28319238)
2. Fradkin E, Kivelson SA, Lawler MJ, Eisenstein JP, Mackenzie AP (2010) Nematic Fermi fluids in condensed matter physics. Annu Rev Condens Matt Phys 1:153-178.
3. Lilly MP, Cooper KB, Eisenstein JP, Pfeiffer LN, West KW (1999) Evidence for an anisotropic state of two-dimensional electrons in high Landau levels. Phys Rev Lett 82:394-397. (Pubitemid 129583628)
4. 7. Science 315:214-217.
5. C superconductor. Nature 463:519-522.
6. C copper-oxide pseudogap states. Nature 466:347-351.
7. x)FeAs systems. Nature 453:899-902.
8. 2 compound of FeAs-based high-temperature superconductors. Phys Rev Lett 101:257003.
9. 2. Phys Rev Lett 101:107006.
10. 2. Phys Rev B 79:014506.
11. 2 single crystals. Phys Rev B 78:214515.
12. 2. Nat Phys 5:555-560.
13. 2. Science 327:181-184.
14. 2 revealed by partial detwinning in a magnetic field. Phys Rev B 81:214502.
15. Chu J-H, et al. (2010) In-plane resistivity anisotropy in an underdoped iron arsenide superconductor. Science 329:824-826.
16. 2 crystals: Optical and transport study. Phys Rev B 81:184508.
17. Mazin II, Johannes MD (2009) A key role for unusual spin dynamics in ferropnictides. Nat Phys 5:141-145.
18. Fang C, et al. (2008) Theory of electron nematic order in LaFeAsO. Phys Rev B 77:224509.
19. Xu C, Muller M, Sachdev S (2008) Ising and spin orders in the iron-based superconductors. Phys Rev B 78:020501(R).
20. Fernandes R, et al. (2009) Effects of nematic fluctuations on the elastic properties of iron arsenide superconductors. Phys Rev Lett 105:157003.
21. Daghofer M, Nicholson A, Moreo A, Dagotto E (2010) Three orbital model for the iron-based superconductors. Phys Rev B 81:014511.
22. Lee C-C, Yin W-G, Ku W (2009) Ferro-orbital order and strong magnetic anisotropy in the parent compounds of iron-pnictide superconductors. Phys Rev Lett 103:267001.
23. Kruger F, Kumar S, Zaanen J, van den Brink J (2009) Spin-orbital frustrations and anomalous metallic state in iron-pnictide superconductors. Phys Rev B 79:054504.
24. Bascones E, Calderon MJ, Valenzuela B (2010) Low magnetization and anisotropy in the antiferromagnetic state of undoped iron pnictides. Phys Rev Lett 104:227201.
25. Yin ZP, Pickett WE (2010) Crystal symmetry and magnetic order in iron pnictides: A tight-binding Wannier function analysis. Phys Rev B 81:174534.
26. Lv W, Kruger F, Phillips P (2010) Orbital ordering and unfrustrated (π,0) magnetism from degenerate double exchange in the pnictides. Phys Rev B 82:045125.
27. Chen C-C, et al. (2010) Orbital order and spontaneous orthorhombicity in iron pnictides. Phys Rev B 82:100504(R).
28. Laad MS, Craco L (2010) Theory of orbital nematicity in underdoped iron arsenides. arXiv:1010.2940v1.
29. 2 (A = Ca, Sr, Ba). Phys Rev B 79:180508(R).
30. 2. arXiv:1009.0271v1.
31. 2. Phys Rev Lett 104:057002.
32. 2: Itinerant electrons in the reconstructed state. Phys Rev B 80:064507.
33. Ran Y, et al. (2009) Nodal spin density wave and band topology of the FeAs-based materials. Phys Rev B 79:014505.
34. Morinari T, Kaneshita E, Tohyama T (2010) Topological and transport properties of Dirac Fermions in an antiferromagnetic metallic phase of iron-based superconductors. Phys Rev Lett 105:037203.
35. 2 across the spin density wave transition. Phys Rev B 80:174510.
36. 2. Phys Rev Lett 104:137001.
37. Liu C, et al. (2010) Evidence for a Lifshitz transition in electron-doped iron arsenic superconductors at the onset of superconductivity. Nat Phys 6:419-423.
38. Hsieh D, et al. (2008) Experimental determination of the microscopic origin of magnetism in parent iron pnictides. arXiv:0812.2289v1.
39. 2. Phys Rev B 81:214503.
40. 2. Phys Rev B 80:174517.
41. 2. arXiv:1007.2543v1.
42. Kugel KI, Khomskii DI (1982) The Jahn-Teller effect and magnetism: Transition metal compounds. Sov Phys Uspekhi 25:231-256.