43 citations · 71 across the 3 of their papers we have counts for
3 papers
cond-mat.mes-hall2017★ 17 cited
Quantum phase transitions in effective spin-ladder models for graphene zigzag nanoribbons
Cornelie Koop, Stefan Wessel
We examine the magnetic correlations in quantum spin models that were derived recently as effective low-energy theories for electronic correlation effects on the edge states of gra…
cond-mat.mes-hall2014★ 11 cited
Effective spin theories for edge magnetism in graphene zigzag ribbons
Cornelie Koop, Manuel J. Schmidt
We report a thorough study of the reducibility of edge correlation effects in graphene to much-simplified effective models for the edge states. The latter have been used before in…
cond-mat.mes-hall2013★ 43 cited
Magnetic Correlations in Short and Narrow Graphene Armchair Nanoribbons
Michael Golor, Cornelie Koop, Thomas C. Lang +2
Electronic states at the ends of a narrow armchair nanoribbon give rise to a pair of non-locally entangled spins. We propose two experiments to probe these magnetic states, based o…