Introduction

Interfaces

root/

• Transport_Interface
• Surface_Green_function
• Peierls
• Hex_Lead_Hamiltonians
• Decimation
• CreateHamiltoninans
• LoadFromFile
• Messages
• OverlapIntegrals
• parseInput
• CommonFunctions
• ValidationFunctions
• adaptiveQ
• Parallel

root/utils

• Ribbon
• CombineRibbons
• antidot
• SNSJosephson

Data structures

Examples

CreateHamiltonians

  Copyright (C) 2009-2015 Peter Rakyta, Ph.D.

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see http://www.gnu.org/licenses/.

Description

Returns an object providing interface to create and store the Hamiltonian and geometry data of the scattering region.

Syntax

object = CreateHamiltonians( Opt, param )

Attributes

• GeneralMessages

  An instance of interface Messages.

• GeneralValidationHandles

  An instance of interface ValidationFunctions.

• kulso_szabfokok

  A list of the sites to be kept after decimation.

• Hscatter

  The matrix of the Hamiltonian.

• Hscatter_transverse

  The matrix of the Hamiltonian corresponding to the transverse coupling.

• fazis_mtx_scatter

  The matrix of the Peierls phases.

• fazis_mtx_scatter_t

  The matrix of the Peierls phases for the transverse coupling.

• coordinates

  An instance of the structure coordinates.

• height

  The length of the scattering region in units of the lattice contant.

• width

  The number of sites in the cross section.

• M

  The number of sites in one unit cell.

• Opt

  An instance of the structure Opt

• param

  An instance of the structure param

• HamiltoniansCreated

  A logical value. True if the Hamiltonian was created, false otherwise.

• HamiltoniansDecimated

  A logical value. True if the Hamiltonian was decimated, or false otherwise.

• MagneticFieldApplied

  A logical value. True if the vector potential was incorporated into the Hamiltonian or false otherwise.

• GaugeTransformationApplied

  A logical value. True if a gauge transformation was applied on the Hamiltonians, or false otherwise.

• q

  A transverse momentum.

• CommonFunctionsHandle

  An instance of the interface CommonFunctions.

Methods

• CreateScatterH
• saveScatter
• loadScatter
• projectHamiltonian2Spin
• MemberWrite
• MemberRead
• MemberClear
• CreateClone

CreateHamiltonians::CreateScatterH

Creates a Hamiltonian of a finite ribbon on hexagonal lattice or construct the Hamiltonian from the unit cell provided in the interface Surface_tmp. The Hamiltonian and the structure containing the coordinates are stored within the class.

Syntax

object.CreateScatterH( varargin )

CreateHamiltonians::saveScatter

Description

Saves the attributes of the present interface into a file.

Syntax

object.saveScatter( filename )

CreateHamiltonians::loadScatter

Description

Load the attributes from a given file.

Syntax

object.loadScatter( filename )

CreateHamiltonians::projectHamiltonian2Spin

Description

Projects the Hamiltonian to the spin space of $$s=\pm1$$.

Syntax

object.projectHamiltonian2Spin( s )

CreateHamiltonians::MemberWrite

object.MemberWrite(MemberName, input)

CreateHamiltonians::MemberRead

ret = object.MemberRead(MemberName)

CreateHamiltonians::MemberClear

object.MemberClear(MemberName)

CreateHamiltonians::CreateClone

Creates a clone of the current interface.

Syntax

interface = interface.CreateClone()