GROWTH MODE OF <font>Sn</font> ON A <font>AU(111)</font> SUBSTRATE

Canzian, A.; Mosca, H.O.; Bozzolo, Guillermo

doi:10.1142/s0218625x10014193

Cited by 8 publications

(4 citation statements)

References 12 publications

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“…23 The Au-Sn alloys have been reported in literature to be non-toxic soldering materials with good bonding characteristics and these are widely used in advanced electronic circuits as well as in optoelectronic devices. 19,24,25 Theoretical studies 26,27 also support surface alloying in Au-Sn, for example, Meier and Castellani 26 show that at 0.5 ML coverage, half of the Au atoms of the top layer are displaced forming a plane in between the adsorbed Sn atoms and the Au top layer atoms. This result supports an earlier Monte Carlo based theoretical study that showed a close competition between surface alloying and layer-by-layer growth at room temperature.…”

Section: Introductionmentioning

confidence: 98%

“…This result supports an earlier Monte Carlo based theoretical study that showed a close competition between surface alloying and layer-by-layer growth at room temperature. 27 In this paper, we present a study of the electronic structure of Au-Sn intermetallic compounds grown on Au(111) using x-ray photoelectron spectroscopy (XPS), LEED, and angle resolved photoemission spectroscopy (ARPES). An analysis of the XPS core-level spectra shows that AuSn grows on Au(111) at room temperature, while high temperature treatment forms Au rich phases, for example, Au 5 Sn.…”

Section: Introductionmentioning

confidence: 99%

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Electronic structure of Au-Sn compounds grown on Au(111)

et al. 2019

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The electronic structure of Au-Sn intermetallic layers of different compositions grown on Au (111) to the thickness of several nanometers has been studied in this work. The layer, interface and the substrate related components in the Au 4f and Sn 4d core-level spectra obtained using x-ray photoelectron spectroscopy (XPS) vary with deposition parameters to reveal the details of the Au-Sn formation. While AuSn is grown by deposition at room temperature, Au rich compounds form as a result of heat treatment through inter diffusion of Au and Sn. Deposition at high temperature arXiv:1911.10002v2 [cond-mat.mtrl-sci]

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Electronic structure of Au-Sn compounds grown on Au(111)

et al. 2019

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“…In addition to reserving or tuning the electronic properties of stanene, another critical issue is the preparation of large-scale and high-quality stanene films . Even though tin tends to form alloys with many metals, ,, including Cu, Ag, and Au, , these alloy-terminated surfaces can serve as the template to grow stanene, as we show below. Many elegant examples, such as the growth of antimonene on alloyed Cu 2 Sb and Ag 2 Sb, , the segregation growth of germanene through Ag layers on Ge(111), and the generation of planar silicene through Au thin films on Si(111), have demonstrated the critical role of surface alloys in the formation of 2D materials.…”

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confidence: 99%

Recent Advances in Tin: From Two-Dimensional Quantum Spin Hall Insulator to Bulk Dirac Semimetal

Yao

Jiang

et al. 2020

J. Phys. Chem. Lett.

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An atomic layer of tin in a buckled honeycomb lattice, termed stanene, is a promising large-gap two-dimensional topological insulator for realizing room-temperature quantum-spin-Hall effect and therefore has drawn tremendous interest in recent years. Because the electronic structures of Sn allotropes are sensitive to lattice strain, e.g. the semimetallic αphase of Sn can transform into a three-dimensional topological Dirac semimetal under compressive strain, recent experimental advances have demonstrated that stanene layers on different substrates can also host various electronic properties relating to in-plane strain, interfacial charge transfer, layer thickness, and so on. Thus, comprehensive understanding of the growth mechanism at the atomic scale is highly desirable for precise control of such tunable properties. Herein, the fundamental properties of stanene and α-Sn films, recent achievements in epitaxial growth, challenges in high-quality synthesis, and possible applications of stanene are discussed.

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“…On the basis of previous studies on the growth of Sn on Au(111) in which the substrate temperature determined the structures of as-grown atomic layers, ,,,,− we first investigate the Sn films directly deposited on freshly prepared Au 2 Sn(111) with the same deposition time and evaporation rate under different substrate temperatures, as summarized in Figure . At low substrate temperature (330 K), the surface is fully covered by Sn tetramers and nanometer-sized aggregates (Figure a).…”

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confidence: 99%

Phase Engineering of Epitaxial Stanene on a Surface Alloy

Zhou

et al. 2020

J. Phys. Chem. Lett.

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Stanene is a notable two-dimensional topological insulator with a large spin− orbit-coupling-induced band gap. However, the formation of surface alloy intermediates during the epitaxial growth on noble metal substrates prevents the as-grown stanene from preserving its intrinsic electronic states. Here, we show that an intentionally prepared 3 3 × Au 2 Sn(111) alloy surface is a suitable inert substrate for growing stanene without the further formation of a complicated surface alloy by scanning tunneling microscopy. The Sn tetramer and clover-shaped Sn pentamer are intermediates for the black-phosphorene-like Sn film at a substrate temperature of <420 K, which transforms to a blue-phosphorene-like stanene with a lattice constant of 0.50 nm above 500 K. First-principles calculations reveal that the epitaxial Sn layer exhibits a lattice registry growth mode and holds a direct energy gap of ∼0.4 eV. Furthermore, interfacial chargetransfer-induced significant Rashba splitting in its electronic structure gives it great potential in spintronic applications.

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GROWTH MODE OF Sn ON A AU(111) SUBSTRATE

Cited by 8 publications

References 12 publications

Electronic structure of Au-Sn compounds grown on Au(111)

Electronic structure of Au-Sn compounds grown on Au(111)

Recent Advances in Tin: From Two-Dimensional Quantum Spin Hall Insulator to Bulk Dirac Semimetal

Phase Engineering of Epitaxial Stanene on a Surface Alloy

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