skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: (Spin-)density-functional theory for open-shell systems: Exact magnetization density functional for the half-filled Hubbard trimer

Journal Article · · Physical Review A
 [1]
  1. Univ. of Missouri, Columbia, MO (United States)

Based on the Hohenberg-Kohn theorem of density-functional theory (DFT), all observable quantities of systems of interacting electrons can be expressed as functionals of the ground-state density. This includes, in principle, the spin polarization (magnetization) of open-shell systems; the explicit form of the magnetization as a functional of the total density is, yet, unknown. In practice, open-shell systems are always treated with spin-DFT, where the basic variables are the spin densities. In this work, the relation between DFT and spin-DFT for open-shell systems is illustrated and the exact magnetization density functional is obtained for the half-filled Hubbard trimer. Errors arising from spin-restricted and -unrestricted exact-exchange Kohn-Sham calculations are analyzed and partially cured via the exact magnetization functional.

Research Organization:
Univ. of Missouri, Columbia, MO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0019109
OSTI ID:
1545508
Alternate ID(s):
OSTI ID: 1545424
Journal Information:
Physical Review A, Vol. 100, Issue 1; ISSN 2469-9926
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

References (34)

Density Functional Theory book January 2011
A local exchange-correlation potential for the spin polarized case. i journal July 1972
Exchange and correlation in atoms, molecules, and solids by the spin-density-functional formalism journal May 1976
Potential in spin-density-functional theory of noncollinear magnetism determined by the many-electron ground state journal April 2007
Spin in density-functional theory journal August 2012
Challenges for Density Functional Theory journal December 2011
Perspective: Fifty years of density-functional theory in chemical physics journal May 2014
Inhomogeneous Electron Gas journal November 1964
Self-Consistent Equations Including Exchange and Correlation Effects journal November 1965
Some Fundamental Issues in Ground-State Density Functional Theory: A Guide for the Perplexed journal March 2009
Spin-current density-functional theory for a correct treatment of spin-orbit interactions and its application to topological phase transitions journal November 2018
Density functionals and model Hamiltonians: Pillars of many-particle physics journal July 2013
Density-functional theory for systems with noncollinear spin: Orbital-dependent exchange-correlation functionals and their application to the Hubbard dimer journal July 2018
Density-functional study of the Mott gap in the Hubbard model journal November 2002
Simple parameterization for the ground-state energy of the infinite Hubbard chain incorporating Mott physics, spin-dependent phenomena and spatial inhomogeneity journal July 2012
The Hubbard dimer: a density functional case study of a many-body problem journal September 2015
Corrigendum: The Hubbard dimer: a density functional case study of a many-body problem (2015 J. Phys.: Condens. Matter 27 393001) journal November 2016
Linear response time-dependent density functional theory of the Hubbard dimer journal July 2018
Testing density-functional approximations on a lattice and the applicability of the related Hohenberg-Kohn-like theorem journal January 2018
Melting a Hubbard dimer: benchmarks of ‘ALDA’ for quantum thermodynamics journal October 2018
Thermodynamic Properties of the One-Dimensional Half-Filled-Band Hubbard Model journal March 1972
Spin electric effects in molecular antiferromagnets journal July 2010
Hubbard Trimer with Spin–Orbit Coupling: Hartree–Fock Solutions, (Non)Collinearity, and Anisotropic Spin Hamiltonian journal February 2019
DFT Calculations on the Spin-Crossover Complex Fe(salen)(NO):  A Quest for the Best Functional journal November 2007
Can DFT Accurately Predict Spin Densities? Analysis of Discrepancies in Iron Nitrosyl Complexes journal August 2011
Benchmarks and Reliable DFT Results for Spin Gaps of Small Ligand Fe(II) Complexes journal March 2018
Quantifying Density Errors in DFT journal October 2018
Finding Density Functionals with Machine Learning journal June 2012
Inhomogeneous Electron Gas journal March 1973
Understanding and reducing errors in density functional calculations text January 2012
The Hubbard Dimer: A density functional case study of a many-body problem text January 2015
Landscape of an exact energy functional text January 2015
Density-functional theory for systems with noncollinear spin: orbital-dependent exchange-correlation functionals and their application to the Hubbard dimer text January 2018
Quantifying Density Errors in DFT text January 2018

Cited By (2)

Exchange-correlation magnetic fields in spin-density-functional theory journal September 2019
Exchange-correlation magnetic fields in spin-density-functional theory text January 2019

Figures / Tables (7)


Similar Records

Exchange-correlation magnetic fields in spin-density-functional theory
Journal Article · Mon Sep 16 00:00:00 EDT 2019 · Physical Review B · OSTI ID:1545508

Magnetization dynamics with time-dependent spin-density functional theory: Significance of exchange-correlation torques
Journal Article · Thu Mar 16 00:00:00 EDT 2023 · Physical Review. B · OSTI ID:1545508

The Hubbard dimer: a density functional case study of a many-body problem
Journal Article · Thu Sep 17 00:00:00 EDT 2015 · Journal of Physics. Condensed Matter · OSTI ID:1545508