STM observation of surface phases of Sn/Cu(001)

Electronic structure and Fermi surface ofSn∕Cu(100)−(32×2)RMartínez-Blanco1, Joco2, Fujii3 et al. 2008Phys. Rev. B115201View full textAdd to dashboardCite

“…25 The unit cells have been imaged using scanning tunneling microscopy. 26 We summarize here the most important results and refer the reader to Ref. 25 for a more detailed account.…”

Phase transition for a38-monolayer Sn-adsorbed Cu(001) bimetallic surface alloy

“…Thenceforth, the Sn/Cu͑001͒ surfaces have been studied by several methods, such as scanning tunneling microscopy ͑STM͒, LEED, and surface x-ray diffraction ͑SXRD͒ for each phase. 8,[18][19][20][21][22] These studies clarified that the surface structures of the 1/5-ML and 1/3-ML Sn/Cu͑001͒ are stable below ϳ450 K. 20 Whereas, the surface of the 1/2-ML Sn/ Cu͑001͒ shows a temperature induced reversible phase transition as described above. 8,13,14 Recently, a new phase has been reported between the 1/3-ML and 1/2-ML Sn/Cu͑001͒ surfaces by means of LEED, SXRD, and STM.…”

“…8,13,14 Recently, a new phase has been reported between the 1/3-ML and 1/2-ML Sn/Cu͑001͒ surfaces by means of LEED, SXRD, and STM. [20][21][22] J. M. Blanco et al 20 showed in their LEED observation that the surface of the new phase has ͑ −4 2 0 4 ͒ periodicity at 300 K. They also claimed that the LEED pattern showed a p͑2 ϫ 2͒ structure at 440 K. Nara et al 21 reported its atomic image at room temperature ͑RT͒ using STM and proposed a simple model of the Sn arrangement at the surface with Sn coverage of 3/8 ML. 21,22 However, the nature of the structural transition above RT has been unclear.…”

Structure determination of the Cu(001)–c(4×4)-Sn surface by low-energy electron diffraction

“…Diffraction patterns of the p(2 Â 6) structure have missing spots, that is, glide planes are present [11]. The subsequently observed phase is a c(4 Â 8) structure, that was discovered recently by scanning tunneling microscopy (STM) studies [10,11]. The coverage of a proposed model is 0.375 ML.…”

“…Among such adsorption systems, Sn-adsorbed Cu(0 0 1) surfaces have been extensively studied [4][5][6][7][8][9][10][11][12][13][14]. The Cu(0 0 1)-Sn system showed five ordered phases at room temperature in a submonolayer coverage [9,12].…”