papers
Publications (7)
cond-mat.str-el2001
Thermodynamics of a 4-site Hubbard model by analytical diagonalization
R. Schumann
cond-mat.mes-hall2015
Ultrafast spin polarization control of Dirac fermions in topological insulators
J. Sánchez-Barriga, E. Golias, A. Varykhalov +7
cond-mat.str-el2007
Analytical solution of a Hubbard model extended by nearest neighbour Coulomb and exchange interaction on a triangle and tetrahedron
R. Schumann
cond-mat.mes-hall2013
Photoemission of Bi$_2$Se$_3$ with Circularly Polarized Light: Probe of Spin Polarization or Means for Spin Manipulation?
J. Sánchez-Barriga, A. Varykhalov, J. Braun +12
cond-mat.mtrl-sci2003
Thermal Remagnetization in Polycrystalline Permanent Magnets
R. Schumann, L. Jahn
cond-mat.str-el1998
Perturbation Expansion of the Partition Sum for any Temperature
R. Schumann
cond-mat.mtrl-sci2001
Theory of Thermal Remagnetization of Permanent Magnets
R. Schumann, L. Jahn