Electronic evidence of an insulator-superconductor crossover in single-layer FeSe/SrTiO3 films

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

Volumn 111, Issue 52, 2014, Pages 18501-18506

  He, Junfeng ^a   Liu, Xu ^a   Zhang, Wenhao ^a,b   Zhao, Lin ^a   Liu, Defa ^a   He, Shaolong ^a   Mou, Daixiang ^a   Li, Fangsen ^a   Tang, Chenjia ^a,b   Li, Zhi ^a   Wang, Lili ^a   Peng, Yingying ^a   Liu, Yan ^a   Chen, Chaoyu ^a   Yu, Li ^a   Liu, Guodong ^a   Dong, Xiaoli ^a   Zhang, Jun ^a   Chen, Chuangtian ^c   Xu, Zuyan ^c   Chen, Xi ^b   Ma, Xucun ^a   Xue, Qikun ^b   Zhou, X J ^a,d   more..

^a INSTITUTE OF GEOLOGY AND GEOPHYSICS   (China)

^b TSINGHUA UNIVERSITY   (China)

^c TECHNICAL INSTITUTE OF PHYSICS AND CHEMISTRY   (China)

^d The Collaborative Innovation Center of Quantum Matter   (China)

Author keywords

ARPES; Insulator to superconductor crossover; Single layer FeSe SrTiO3 films

Indexed keywords

IRON; SELENIUM; STRONTIUM; TITANIUM;

ARTICLE; CELL CYCLE S PHASE; ELECTRICAL PARAMETERS; ELECTRONICS; INSULATOR SUPERCONDUCTOR CROSSOVER; PRIORITY JOURNAL; SUPERCONDUCTOR; TEMPERATURE DEPENDENCE; TRANSITION TEMPERATURE; VACUUM;

EID: 84921045289     PISSN: 00278424     EISSN: 10916490     Source Type: Journal    
DOI: 10.1073/pnas.1414094112     Document Type: Article

References (52)

1. Johnston DC (2010) The puzzle of high temperature superconductivity in layered iron pnictides and chalcogenides. Adv Phys 59(6):803-1061.
2. Paglione J, Greene RL (2010) High-temperature superconductivity in iron-based materials. Nat Phys 6(9):645-658.
3. Stewart GR (2011) Superconductivity in iron compounds. Rev Mod Phys 83(4):1589-1652.
4. Wang F, Lee DH (2011) The electron-pairing mechanism of iron-based superconductors. Science 332(6026):200-204.
5. Lee PA, Nagaosa N, Wen XG (2006) Doping a Mott insultaor: Physics of high temperature superconductivity. Rev Mod Phys 78(1):17-85.
6. (x): A low carrier density superconductor near itinerant magnetism. Phys Rev Lett 100(23):237003.
7. x. Phys Rev Lett 101(5):057003.
8. x. Phys Rev Lett 101(8):087004.
9. Graser S, et al. (2009) Near-degeneracy of several pairing channels in multiorbital models for the Fe pnictides. New J Phys 11:025016.
10. Wang F, Zhai H, Ran Y, Vishwanath A, Lee DH (2009) Functional renormalization-group study of the pairing symmetry and pairing mechanism of the FeAs-based high-temperature superconductor. Phys Rev Lett 102(4):047005.
11. c iron pnictides. Phys Rev Lett 101(7):076401.
12. Seo K, Bernevig BA, Hu J (2008) Pairing symmetry in a two-orbital exchange coupling model of oxypnictides. Phys Rev Lett 101(20):206404.
13. Chen W-Q, Yang KY, Zhou Y, Zhang FC (2009) Strong coupling theory for superconducting iron pnictides. Phys Rev Lett 102(4):047006.
14. Kou SP, et al. (2009) Coexistence of itinerant electrons and local moments in iron-based superconductors. Europhys Lett 88(1):17010.
15. Dai J, Si Q, Zhu JX, Abrahams E (2009) Iron pnictides as a new setting for quantum criticality. Proc Natl Acad Sci USA 106(11):4118-4121.
16. Yu R, Si QM (2011) Mott transition in multiorbital models for iron pnictides. Phys Rev B 84(23):235115.
17. 2 as a doped Mott insulator. Europhys Lett 95(1):17003.
18. Hu JP, et al. (2012) S-4 symmetric microscopic model for iron-based superconductors. Phys Rev X 2(2):021009.
19. 3. Chin Phys Lett 29(3):037402.
20. Liu D, et al. (2012) Electronic origin of high-temperature superconductivity in single-layer FeSe superconductor. Nat Commun 3:931.
21. He S, et al. (2013) Phase diagram and electronic indication of high-temperature superconductivity at 65 K in single-layer FeSe films. Nat Mater 12(7):605-610.
22. 3 thin films. Nat Mater 12(7):634-640.
23. Zhang WH, et al. (2014) Direct observation of high temperature superconductivity in one-unit-cell FeSe films. Chin Phys Lett 31(1):017401.
24. Deng LZ, et al. (2013) The Meissner and mesoscopic superconducting states in 1-4 unit-cell FeSe-films up to 80 K. arXiv:1311.6459.
25. 3 due to cross-interfacial electron-phonon coupling. arXiv:1312.2633.
26. 3 heterostructures using photoemission spectroscopy. Phys Rev Lett 112(10):107001.
27. Ge JF, et al. (2014) Superconductivity in single-layer films of FeSe with a transition temperature above 100 K. Nat Mater, 10.1038/nmat4153.
28. 3(001): First-principles study. Phys Rev B 85(23):235123.
29. 3 interface. Phys Rev B 86(13):134508.
30. Bazhirov T, Cohen ML (2013) Effects of charge doping and constrained magnetization on the electronic structure of an FeSe monolayer. J Phys Condens Matter 25(10):105506.
31. 3: The charge doping and electric field effects. arXiv:1302.2996.
32. 3 thin films. Phys Rev B 89(1):014501.
33. 3 substrates. Phys Rev B 89(6):060506.
34. 4 with a Fermi surface forming an arc. Phys Rev Lett 91(2):027001.
35. Peng Y, et al. (2013) Disappearance of nodal gap across the insulator-superconductor transition in a copper-oxide superconductor. Nat Commun 4:2459.
36. Vishik IM, et al. (2012) Phase competition in trisected superconducting dome. Proc Natl Acad Sci USA 109(45):18332-18337.
37. 4. Phys Rev Lett 110(4):047004.
38. Lupi S, et al. (2009) Far-infrared absorption and the metal-to-insulator transition in hole-doped cuprates. Phys Rev Lett 102(20):206409.
39. 2 seen via high-resolution angle-resolved photoemission. Phys Rev B 80(13): 134519.
40. c superconductors. Phys Rev B 57(18):R11093-R11096.
41. Brinkman A, et al. (2007) Magnetic effects at the interface between non-magnetic oxides. Nat Mater 6(7):493-496.
42. Reyren N, et al. (2007) Superconducting interfaces between insulating oxides. Science 317(5842):1196-1199.
43. Richter C, et al. (2013) Interface superconductor with gap behaviour like a high-temperature superconductor. Nature 502(7472):528-531.
44. 3 interface ground state. Nature 456(7222):624-627.
45. Abrahams E, et al. (1979) Scaling theory of localization: Absence of quantum diffusion in two dimensions. Phys Rev Lett 42(10):673-676.
46. Anderson PW (1958) Absence of diffusion in certain random lattices. Phys Rev 109(5):1492-1505.
47. Liu Y, Haviland DB, Nease B, Goldman AM (1993) Insulator-to-superconductor transition in ultrathin films. Phys Rev B 47(10):5931-5946.
48. Qazibash MM, et al. (2009) Electronic correlations in the iron pnictides. Nat Phys 5(9):647-650.
49. Yin ZP, Haule K, Kotliar G (2011) Kinetic frustration and the nature of the magnetic and paramagnetic states in iron pnictides and iron chalcogenides. Nat Mater 10(12):932-935.
50. Yu R, Si Q (2013) Orbital-selective Mott phase in multiorbital models for alkaline iron selenides K1-xFe2-ySe2. Phys Rev Lett 110(14):146402.
51. 2 (A=K, Rb) superconductors. Phys Rev Lett 110(6):067003.
52. Liu G, et al. (2008) Development of a vacuum ultraviolet laser-based angle-resolved photoemission system with a superhigh energy resolution better than 1 meV. Rev Sci Instrum 79:023105.