Hai Guoqiang

• Abstract

  The main objective of this project is theoretical studies on: (i) many-body effects in two- dimensional crystals with the states of electron pairs, and (ii) electronic and magnetic properties of metal-atom clusters of Cu, Ag and Au doped with transition metal atoms. (AU)

  Many-body effects in two-dimensional crystals and in nano-clusters of metal atoms, AP.R

• Abstract

  During the visit of Prof. Ladir Cândido da Silva in IFSC-USP, we are going to continue the work in collaboration between our two groups in the last years. In addition to the work described in the research project about (1) the doped Au clusters and (2) the electron paring mechanism in a two-dimensional crystal, we also have some other work in collaboration to be finalized, such as the stu…

  Effects of electron-electron interaction in clusters of metal atoms and on the electron-pair state in a two-dimensional crystal, AV.BR

• Abstract

  Very recently, silecene, a one-atom thick, two-dimensional layer of silicon atoms in a honeycomb crystal structure, has been created in laboratories. This new material is similar to graphene but with a gap at the Dirac point, a linear spectrum near the K and K' points, and very strong spin-orbit interaction, is expected to open new perspectives for applications, especially due to its comp…

  Electron transport in silicene, AV.EXT

(Only some records are available in English at this moment)

• Abstract

  This project is composed by two parts based on current researches in our group. One is aimed to study the electronic structures of metal atom clusters and the other is related to some fundamental problems of many electron systems such as finite temperature effects on the ground state of two-dimensional (2D) electron systems. The study on atom clusters is a new research line in our group. …

  Metal atom clusters and crystallization of 2D electron systems at finite temperature, BP.PD

• Abstract

  This Project is aimed to study: 1) Electron transport through a quantum dot with few electrons localized inside and the effects of Exchange and inelástica scattering; 2) Spin-orbit coupling effects on electron transport in one-dimensional channel coupled to few electron quantum dots; and 3) Ground state configurations in coupled quantum rings in magnetic fields within the current-spin den…

  Electronic dynamic and static properties of quantum dots and quantum rings, BP.PD

• Abstract

  The Project is aimed to study how the structural and dynamic properties of mesoscopic system of strongly interacting charges depend on: i) the reduced dimensionality of the system; ii) the shape of the confinement (parabolic or hard-wall); iii) the infuence of static or time-dependent external fields; iv) the presence of constraints or constrictions; and v) the coexistence of two differen…

  Structural and dynamic properties of a mesoscopic system of strongly interacting charges, BP.PD

(Only some records are available in English at this moment)

• Abstract

  This research project is composed of two parts. (1) The first part is aimed to study the electronic properties of silicene. Silicene is a new material similar to graphene but with a gap at the Dirac point, a linear spectrum near the K and K' points, and very strong spin-orbit interaction. It has been created very recently in laboratories. In this project, we are going to study (i) the mag…

  Electronic properties of silicene and the role of the electron-pair states in unconventional superconductivity, BE.PQ

• Abstract

  The solid state quantum computer (QC) using electronic spins in semiconductor quantum dots is a very attractive and promising area. Many aspects of the quantum dot QC need realistic and detail investigations. In this project, we intend to develop the physical models for predicting the capability of quantum dot devices to perform spin- qubit operations, and studying spin transport in mesos…

  Spintronics in semiconductor quantum dots for quantum computation, BE.PQ