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The Bi/Ag(111), Pb/Ag(111), and Sb/Ag(111) surface alloys exhibit a two-dimensional band structure with a strongly enhanced Rashba-type spin-splitting, which is in part attributed to the structural asymmetry resulting from an outward…

We have studied the BiCu$_2$/Cu(111) surface alloy using low-temperature scanning tunneling microscopy and spectroscopy. We observed standing waves caused by scattering off defects and step edges. Different from previous studies on similar…

材料科学 · 物理学 2015-06-16 Manuel Steinbrecher , Hasmik Harutyunyan , Christian R. Ast , Daniel Wegner

Spin-orbit splitting of surface states is analyzed within and beyond the Rashba model using as examples the (111) surfaces of noble metals, Ag2Bi surface alloy, and topological insulator Bi2Se3. The ab initio analysis of relativistic…

材料科学 · 物理学 2015-06-17 E. E. Krasovskii

We quantify the effect of the spin-orbit interaction on the Rydberg-like series of image state electrons at the (111) and (001) surface of Ir, Pt and Au. Using relativistic multiple-scattering methods we find Rashba-like dispersions with…

材料科学 · 物理学 2007-05-23 J R McLaughlan , E M Llewellyn-Samuel , S Crampin

Spin-orbit splitting in graphene on Ni, Au, or Ag (111) substrates was examined on the basis of density-functional theory. Graphene grown on the three metals was found to have Rashba splitting of a few or several tens of meV. The strong…

介观与纳米尺度物理 · 物理学 2010-08-05 Z. Y. Li , S. Qiao , Z. Q. Yang , R. Q. Wu

Using a three-dimensional spin polarimeter we have gathered evidence for the interference of spin states in photoemission from the surface alloy Sb/Ag(111). This system features a small Rashba-type spin-splitting of a size comparable to the…

其他凝聚态物理 · 物理学 2010-01-28 Fabian Meier , Vladimir Petrov , Hossein Mirhosseini , Luc Patthey , Juergen Henk , Juerg Osterwalder , J. Hugo Dil

We present a comprehensive investigation into the atomic and electronic structures of a single-layer Sb(110) rhombohedral crystal formed on an Au(111) substrate. Low-energy electron diffraction (LEED) and scanning tunneling microscopy (STM)…

材料科学 · 物理学 2024-07-01 Jinbang Hu , Lina Liu , Xiansi Wang , Yong P. Chen , Justin W Wells

In this paper, spin properties of monolayer MX (M=Ga, In and X=S, Se, Te) in the presence of strain are studied. Density functional theory is used to investigate spin properties. The strain changes modification of bandgap due to spin-orbit…

材料科学 · 物理学 2020-05-20 Mohammad Ariapour , Shoeib Babaee Touski

Spin-resolved band structures of L-gap surface states on Ag(111) and Cu(111) are investigated by spin- and angle-resolved photoelectron spectroscopy (SARPES) with a vacuum-ultra-violet laser. The observed spin textures of the Ag(111) and…

材料科学 · 物理学 2018-07-18 Koichiro Yaji , Ayumi Harasawa , Kenta Kuroda , Ronghan Li , Binghai Yan , Fumio Komori , Shik Shin

We investigate the surface Rashba effect for a surface of reduced in-plane symmetry. Formulating a k.p perturbation theory, we show that the Rashba splitting is anisotropic, in agreement with symmetry-based considerations. We show that the…

介观与纳米尺度物理 · 物理学 2013-05-29 E. Simon , A. Szilva , B. Ujfalussy , B. Lazarovits , G. Zarand , L. Szunyogh

We establish a general Rashba Hamiltonian for trilayer graphene (TLG) by introducing an extrinsic layer-dependent Rashba spin-orbit coupling (SOC) arising from the off-plane inversion symmetry breaking. Our results indicate that the band…

介观与纳米尺度物理 · 物理学 2024-03-14 Xinjuan Cheng , Liangyao Xiao , Xuechao Zhai

Graphene, as a material with a small intrinsic spin-orbit interaction of approximately 1 $\mu$eV, has a limited application in spintronics. Adsorption of graphene on the surfaces of heavy-metals was proposed to induce the strong…

材料科学 · 物理学 2018-12-27 Elena Voloshina , Yuriy Dedkov

We investigate the Rashba-type spin splitting in the Shockley surface states on Au(111) and Ag(111) surfaces, based on first-principles calculations. By turning on and off spin-orbit interaction (SOI) partly, we show that although the…

介观与纳米尺度物理 · 物理学 2013-01-01 Hyungjun Lee , Hyoung Joon Choi

A microscopic approach is developed to scattering of surface states from a non-magnetic linear defect at a surface with strong spin-orbit interaction. Spin-selective reflection resonances in scattering of Rashba-split surface states by an…

介观与纳米尺度物理 · 物理学 2018-01-24 I. A. Nechaev , E. E. Krasovskii

Relativistic density-functional-theory calculations of Bi(111) thin films are performed to revisit their band structure and that of macroscopic samples. The band structure of a our 39-bilayer film ($\sim$~15~nm) shows that (1) $\sim$9-nm…

材料科学 · 物理学 2020-12-01 Marisol Alcantara-Ortigoza , Talat S. Rahman

We present a detailed analysis of the spin-flip excitations induced by a periodic time-dependent electric field in the Rashba prototype Au(111) noble metal surface. Our calculations incorporate the full spinor structure of the…

材料科学 · 物理学 2013-09-18 Julen Ibañez-Azpiroz , Aitor Bergara , Evgeny Ya. Sherman , Asier Eiguren

The well-known experimentally observed \textit{sp}-derived Au(111) Shockley surface states with Rashba spin splitting are perfectly fit by an effective tight-binding model, considering a two-dimensional hexagonal lattice with…

介观与纳米尺度物理 · 物理学 2008-11-15 Ming-Hao Liu , Son-Hsien Chen , Ching-Ray Chang

A theoretical study is presented of the effect of an in-plane magnetic exchange field on the band structure of centrosymmetric films of noble metals and topological insulators. Based on an ab initio relativistic $\mathbf{k}\cdot\mathbf{p}$…

材料科学 · 物理学 2022-01-14 I. A. Nechaev , E. E. Krasovskii

Each unit cell in YBa$_2$Cu$_3$O$_{6+x}$ contains a pair of two-dimensional CuO$_2$ layers. While the crystal structure is globally inversion symmetric, the individual layers are not. This leads, necessarily, to a nonvanishing Rashba…

超导电性 · 物理学 2020-01-29 W. A. Atkinson

Here, we report a novel AuSb 2D superstructure on Au(111) that shows agreements and discrepancies to the expected electronic features of the ideal 2D surface alloys with $\sqrt{3}\times\sqrt{3}$ periodicity. Using spin- and angle-resolved…

材料科学 · 物理学 2024-10-07 Jinbang Hu , Xiansi Wang , Anna Cecilie Åsland , Justin Wells
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