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The results of combined experimental and theoretical study of substitutional and clustering effects in Bi-doped TiO2 hosts (bulk and thin-film morphologies) are presented. Bi-doping of the bulk and thin-film titanium dioxide was made with…

Materials Science · Physics 2016-05-25 D. A. Zatsepin , D. W. Boukhvalov , E. Z. Kurmaev , N. V. Gavrilov , S. S. Kim , I. S. Zhidkov

Doping stoichiometric SiNx layers (x=[N]/[Si]=1.33) with Si atoms by ultra-low energy ion implantation (ULE-II) and annealing them at different temperatures can significantly impact the switching characteristics. Electrical characterization…

Spin-dependent transport processes in thin near-surface doping regions created by low energy ion implantation of arsenic in silicon are detected by two methods, spin-dependent recombination (SDR) using microwave photoconductivity and…

Newly discovered Bi-O-S compounds remain an enigma in attempts to understand their electronic properties. A recent study of Bi$_{4}$O$_{4}$S$_{3}$ has shown it to be a mixture of two phases, Bi$_{2}$OS$_{2}$ and Bi$_{3}$O$_{2}$S$_{3}$, the…

The effect of spin-orbit coupling on the electronic structure of the layered iron-free pnictide superconductor, SrPtAs, has been studied using the full potential linearized augmented plane wave method. The anisotropy in Fermi velocity,…

Superconductivity · Physics 2012-02-09 S. J. Youn , S. H. Rhim , D. F. Agterberg , M. Weinert , A. J. Freeman

Our predictions, based on density-functional calculations, reveal that surface doping of ZnO nanowires with Bi leads to a linear-in-$k$ splitting of the conduction-band states, through spin-orbit interaction, due to the lowering of the…

Materials Science · Physics 2017-06-07 Mehmet Aras , Sümeyra Güler-Kılıç , Çetin Kılıç

Nickel/Bismuth (Ni/Bi) bilayers have recently attracted attention due to the occurrence of time-reversal symmetry breaking in the superconducting state. Here, we report on the structural, magnetic and electric characterization of thin film…

We present a theoretical description and numerical simulations of the superconducting transition in hybrid structures including strong spin-orbit interactions. The spin-orbit coupling is taken to be of Rashba type for concreteness, and we…

Superconductivity · Physics 2018-03-07 Haakon T. Simensen , Jacob Linder

Experiments show that the Cooper pair transport in the insulator phase that forms at thin film superconductor to insulator transitions (SIT) is simply activated. This activated behavior depends on the microscopic factors that drive the…

Superconductivity · Physics 2019-04-24 Xue Zhang , James C. Joy , Chunshu Wu , Jin-Ho Kim , J. M. Xu , James M. Valles

We report the violation of the Pauli limit due to intrinsic spin-orbit coupling in SrTiO3 heterostructures. Via selective doping down to a few nanometers, a two-dimensional superconductor is formed, geometrically suppressing orbital…

Superconductivity · Physics 2015-05-28 M. Kim , Y. Kozuka , C. Bell , Y. Hikita , H. Y. Hwang

Bismuth selenide Bi$_2$Se$_3$ was grown by molecular beam epitaxy while carrier density and mobility were measured directly \emph{in situ} as a function of film thickness. Carrier density shows high interface n-doping (1.5 x 10$^{13}$…

Materials Science · Physics 2014-10-31 Jack Hellerstedt , Mark Edmonds , J. H. Chen , William G. Cullen , C. X. Zheng , Michael S. Fuhrer

We study spin-orbit coupling in metallic carbon nanotubes (CNTs) within the many-body Tomonaga-Luttinger liquid (TLL) framework. For a well defined sub-class of metallic CNTs, that contains both achiral zig-zag as well as a sub-set of…

Strongly Correlated Electrons · Physics 2016-06-15 Piotr Chudzinski

Ambient-pressure superconductivity in compressively strained bilayer nickelate films enables direct spectroscopic tests of pairing scenarios, yet how magnetism evolves with carrier doping remains largely unexplored. Here we use Ni…

Co-adsorption of Bi and Sb on Ag(111) at room temperature yields a single-layer Bi(1-x)Sb(x) alloy with a rectangular 3xsqrt(3) structure containing four atoms per unit cell (2/3 ML total coverage) and lacking long-range chemical order. We…

Materials Science · Physics 2026-05-20 Javier D. Fuhr , Polina M. Sheverdyaeva , Paolo Moras , J. Esteban Gayone , Hugo Ascolani

We study within a first-principle approach the band structure, vibrational modes and electron-phonon coupling in boron, aluminum and phosphorus doped silicon in the diamond phase. Our results provide evidences that the recently discovered…

Superconductivity · Physics 2007-05-23 E. Bourgeois , X. Blase

We theoretically investigate the deflection-induced coupling of an electron spin to vibrational motion due to spin-orbit coupling in suspended carbon nanotube quantum dots. Our estimates indicate that, with current capabilities, a quantum…

Mesoscale and Nanoscale Physics · Physics 2012-06-05 András Pályi , P. R. Struck , Mark Rudner , Karsten Flensberg , Guido Burkard

We report a first principles computational analysis of two phonon-mediated superconductors, In$_{5}$Bi$_{3}$ and In$_{5}$Sb$_{3}$. We show that spin-orbit coupling leads to splitting of electron bands around the Fermi energy, resulting in a…

Superconductivity · Physics 2024-10-29 Yao Wei , Siyu Chen , Bartomeu Monserrat

We present a theoretical study of diluted magnetic semiconductors that includes spin-orbit coupling within a realistic host band structure and treats explicitly the effects of disorder due to randomly substituted Mn ions. While spin-orbit…

Disordered Systems and Neural Networks · Physics 2009-11-13 Byounghak Lee , Xavier Cartoixa , Nandini Trivedi , Richard M. Martin

Upon reduction of the film thickness we observe a metal-insulator transition in epitaxially stabilized, spin-orbit coupled SrIrO$_3$ ultrathin films. By comparison of the experimental electronic dispersions with density functional theory at…

Strongly Correlated Electrons · Physics 2017-12-27 P. Schütz , D. Di Sante , L. Dudy , J. Gabel , M. Stübinger , M. Kamp , Y. Huang , M. Capone , M. -A. Husanu , V. Strocov , G. Sangiovanni , M. Sing , R. Claessen

Recently, Bi-based compounds have attracted attentions because of the strong spin-orbit coupling (SOC). In this work, we figured out the role of SOC in ABi$_{3}$ (A=Sr and Ba) by theoretical investigation of the band structures, phonon…

Superconductivity · Physics 2015-10-21 D. F. Shao , X. Luo , W. J. Lu , L. Hu , X. D. Zhu , W. H. Song , X. B. Zhu , Y. P. Sun