1 Kamihara Y, Watanabe T, Hirano M, et al. Iron-based layered superconductor La[O1-xFx]FeAs(x=0.05-0.12) with Tc=26 K. J Am Chem Soc, 2008, 130: 3296-3297
[2]
2 Takahashi H, Igawa K, Arii K, et al. Superconductivity at 43 K in an iron-based layered compound LaO1-xFxFeAs. Nature, 2008, 453: 376-378
[3]
3 Ren Z A, Lu W, Yang J, et al. Superconductivity at 55 K in iron-based F-doped layered quaternary compound Sm[O1-xFx]FeAs. Chin Phys Lett, 2008, 25: 2215-2216
[4]
4 Hsu F C, Luo J Y, Keh K W, et al. Superconductivity in the PbO-type structure α-FeSe. Proc Natl Acad Sci USA, 2008, 105: 14262-14264
[5]
5 Medvedev S, Mcqueen T M, Troyan I A, et al. Electronic and magnetic phase diagram of β-Fe1.01Se with superconductivity at 36.7 K under pressure. Nat Mater, 2009, 8: 630-633
[6]
6 Yen K W, Huang T W, Huang Y K L, et al. Tellurium substitution effect on the superconductivity of the α-phase iron selenide. EPL, 2008, 84: 37002
[7]
7 Okamoto H. The FeSe (iron selenium) system. J Phase Equilib Diffus, 1991, 12: 383-389
[8]
8 Yoshikazu M, Yoshihiko T. Review of Fe chalcogenide superconductors as the simplest Fe-based superconductor. J Phys Soc Jpn, 2010, 79: 102001
10 Li Y Y, Wang G, Zhu X G, et al. Intrinsic topological insulator Bi2Te3 thin film on Si and their thickness limit. Adv Mater, 2010, 22: 4002-4007
[11]
11 Song C L, Wang Y L, Jiang Y P, et al. Topological insulator Bi2Se3 thin films grown on double-layer graphene by molecular beam epitaxy. Appl Phys Lett, 2010, 97: 143118
[12]
12 Song C L, Wang Y L, Jiang Y P, et al. Molecular-beam epitaxy and robust superconductivity of stoichiometric FeSe crystalline films on bilayer graphene. Phys Rev B, 2011, 84: 020503
[13]
13 Song C L, Wang Y L, Cheng P, et al. Direct observation of nodes and twofold symmetry in FeSe superconductor. Science, 2011, 332: 1410-1413
[14]
14 Kasahara S, Watashige T, Hanaguri T, et al. Field-induced superconducting phase of FeSe in the BCS-BEC crossover. Proc Natl Acad Sci USA, 2014, 111: 16309-16313
[15]
15 Hanaguri T, Niitaka S, Kuroki K, et al. Unconventional s-wave superconductivity in Fe(Se, Te). Science, 2010, 328: 474-476
[16]
16 Hirschfeld P J, Korshunov M M, Mazin I I. Gap symmetry and structure of Fe-based superconductors. Rep Prog Phys, 2011, 74: 124508
[17]
17 Hung H H, Song C L, Chen X, et al. Anisotropic vortex lattice structures in the FeSe superconductor. Phys Rev B, 2012, 85: 104510
[18]
18 Debanjan C, Berg E, Sachdev S. Nematic order in the vicinity of a vortex in superconducting FeSe. Phys Rev B, 2011, 84: 205113
[19]
19 Nakayama K, Miyata Y, Phan G N, et al. Reconstruction of band structure induced by electronic nematicity in an FeSe superconductor. Phys Rev Lett, 2014, 113: 237001
[20]
20 Baek S H, Efremov D V, Ok J M, et al. Orbital-driven nematicity in FeSe. Nat Mater, 2014, 14: 210-214
[21]
21 Song C L, Wang Y L, Jiang Y P, et al. Suppression of superconductivity by twin boundaries in FeSe. Phys Rev Lett, 2012, 109: 137004
[22]
22 Song C L, Wang Y L, Jiang Y P, et al. Imaging the electron-boson coupling in superconducting FeSe films using a scanning tunneling microscope. Phys Rev Lett, 2014, 112: 057002
[23]
23 Okabe H, Takeshita N, Horigane K, et al. Pressure-induced high-Tc superconducting phase in FeSe: Correlation between anion height and Tc. Phys Rev B, 2011, 81: 205119
[24]
24 Wang Q, Shen Y, Pan B, et al. Strong Interplay between stripe spin fluctuations, nematicity and superconductivity in FeSe. 2015, arXiv:1502.07544
[25]
25 Lee J, Fujita K, McElroy K, et al. Interplay of electron-lattice interactions and superconductivity in Bi2Sr2CaCu2O8+δ. Nature, 2006, 442: 546-550
[26]
26 Wang Z, Yang H, Fang D, et al. Close relationship between superconductivity and the bosonic mode in Ba0.6K0.4Fe2As2 and Na (Fe0.975Co0.025)As. Nat Phys, 2013, 9: 42-48
[27]
27 Balatsky A V, Zhu J X. Local strong-coupling pairing in d-wave superconductors with inhomogeneous bosonic modes. Phys Rev B, 2006, 74: 094517
[28]
28 Ginzburg V L. On surface superconductivity. Phys Lett, 1964, 13: 101-102
[29]
29 Strongin M, Kammerer O F, Crow J E, et al. Enhanced superconductivity in layered metallic films. Phys Rev Lett, 1968, 21: 1320-1323
[30]
30 Bozovic I, Logvenov G, Belca I, et al. Epitaxial strain and superconductivity in La2-xSrxCuO4 thin films. Phys Rev Lett, 2002, 89: 107001
[31]
31 Logvenov G, Gozar A, Bozovic I. High temperature interface superconductivity. J Supercond Nov Magn, 2013, 26: 2863-2865
[32]
32 Reyren N, Thiel S, Caviglia A D, et al. Superconducting interfaces between insulating oxides. Science, 2007, 317: 1196-1199
[33]
33 Zhang T, Cheng P, Li W J, et al. Superconductivity in one-atomic-layer metal films grown on Si(111). Nat Phys, 2010, 6: 104-108
[34]
34 Wang Q Y, Li Z, Zhang W H, et al. Interface-induced high-temperature superconductivity in single unit-cell FeSe films on SrTiO3. Chin Phys Lett, 2012, 29: 037402
[35]
35 Li Z, Peng J P, Zhang H M, et al. Molecular beam epitaxy growth and post-growth annealing of FeSe films on SrTiO3: A scanning tunneling microscopy study. J Phys Condens Matter, 2014, 26: 265002
[36]
36 Zhang W H, Sun Y, Zhang J S, et al. Direct observation of high-temperature superconductivity in one-unit-cell FeSe films. Chin Phys Lett, 2014, 31: 017401
[37]
37 Liu D, Zhang W H, Mou D X, et al. Electronic origin of high-temperature superconductivity in single-layer FeSe superconductor. Nat Commun, 2012, 3: 931
[38]
38 He S L, He J F, Zhang W H, et al. Phase diagram and electronic indication of high-temperature superconductivity at 65 K in single-layer FeSe films. Nat Mater, 2013, 12: 605
[39]
39 He J F, Liu X, Zhang W H, et al. Electronic evidence of an insulator-superconductor crossover in single-layer FeSe/SrTiO3 films. Proc Natl Acad Sci USA, 2014, 111: 18501-18506
[40]
40 Liu K, Lu Z Y, Xiang T. Atomic and electronic structures of FeSe monolayer and bilayer thin films on SrTiO3(001): First-principles study. Phys Rev B, 2012, 85: 235123
[41]
41 Tian Y C, Zhang W H, Li F S, et al. Ultrafast dynamics evidence of high temperature superconductivity in single unit cell FeSe on SrTiO3. 2015, arXiv:1502.06339
[42]
42 Sun Y, Zhang W H, Xing Y, et al. High temperature superconducting FeSe films on SrTiO3 substrates. Sci Rep, 2014, 4: 6040
[43]
43 Tan S, Zhang Y, Xia M, et al. Interface-induced superconductivity and strain-dependent spin density waves in FeSe/SrTiO3 thin films. Nat Mater, 2013, 12: 634-640
[44]
44 Peng R, Shen X P, Xie X, et al. Measurement of an enhanced superconducting phase and a pronounced anisotropy of the energy gap of a strained FeSe single layer in FeSe/Nb:SrTiO3/KTaO3 heterostructures using photoemission spectroscopy. Phys Rev Lett, 2014, 112: 107001
[45]
45 Peng R, Xu H C, Tan S Y, et al. Tuning the band structure and superconductivity in single-layer FeSe by interface engineering. Nat Commun, 2014, 5: 5044
[46]
46 Liu K, Zhang B J, Lu Z Y. First-principles study of magnetic frustration in FeSe epitaxial films on SrTiO3. Phys Rev B, 2015, 91: 045107
[47]
47 Ge J F, Liu Z L, Liu C, et al. Superconductivity above 100 K in single-layer FeSe films on doped SrTiO3. Nat Mater, 2014, 14: 285-289
[48]
48 Huang D, Song C L, Webb T A, et al. Revealing the empty-state electronic structure of single-unit-cell FeSe/SrTiO3. 2015, arXiv:1503.04792
[49]
49 Lee J J, Schmitt F T, Moore R G, et al. Interfacial mode coupling as the origin of the enhancement of Tc in FeSe films on SrTiO3. Nature, 2014, 515: 245-248
[50]
50 Cui Y T, Moore R G, Zhang A M, et al. Interface ferroelectric transition near the gap-opening temperature in a single-unit-cell FeSe film grown on Nb-doped SrTiO3 substrate. Phys Rev Lett, 2015, 114: 037002
[51]
51 Xiang Y Y, Wang F, Wang D, et al. High-temperature superconductivity at the FeSe/SrTiO3 interface. Phys Rev B, 2012, 86: 134508
[52]
52 Coh S, Cohen M L, Louie S G. Structural template increases electron-phonon interaction in an FeSe monolayer. 2014, arXiv:1407.5657
[53]
53 Deng L Z, Lv B, Wu Z, et al. Meissner and mesoscopic superconducting states in 1-4 unit-cell FeSe films. Phys Rev B, 2014, 90: 214513
[54]
54 Bozovic I, Ahn C. A new frontier for superconductivity. Nat Phys, 2014, 10: 892-895
[55]
55 Mazin I I, Singh D J, Johannes M D, et al. Unconventional superconductivity with a sign reversal in the order parameter of LaFeAsO1-xFx. Phys Rev Lett, 2008, 101: 057003
[56]
56 Kuroki K, Onari S, Arita R, et al. Unconventional pairing originating from the disconnected Fermi surfaces of superconducting LaFeAsO1-xFx. Phys Rev Lett, 2008, 101: 087004
[57]
57 Zhang W H, Li Z, Li F S, et al. Interface charge doping effects on superconductivity of single-unit-cell FeSe films on SrTiO3 substrates. Phys Rev B, 2014, 89: 060506
[58]
58 Fan Q, Zhang W H, Liu X, et al. Plain s-wave superconductivity in single-layer FeSe on SrTiO3 probed by scanning tunneling microscopy. 2015, arXiv:1504.02185
[59]
59 Kontani H, Onari S. Orbital-fluctuation-mediated superconductivity in iron pnictides: Analysis of the five-orbital Hubbard-Holstein model. Phys Rev Lett, 2010, 104: 157001
[60]
60 Bang J, Li Z, Sun Y Y, et al. Atomic and electronic structures of single-layer FeSe on SrTiO3(001): The role of oxygen deficiency. Phys Rev B, 2013, 87: 220503
