18,576 research outputs found
Magnetism and topological phases in an interacting decorated honeycomb lattice with spin-orbit coupling
We study the interplay between spin-orbit coupling (SOC) and Coulomb
repulsion in a Hubbard model on a decorated honeycomb lattice which leads to a
plethora of phases. While a quantum spin hall insulator is stable at weak
Coulomb repulsion and moderate SOC, a semimetallic phase emerges at large SOC
in a broad range of Coulomb repulsion. This semimetallic phase has topological
properties not observed in conventional metals such as a finite, non-quantized
spin Hall conductivity. At large Coulomb repulsion and negligible spin-orbit
coupling, electronic correlations stabilize a resonance valence bond (RVB) spin
liquid state in contrast to the classical antiferromagnetic state predicted by
mean-field theory. Under sufficiently strong SOC, such RVB state is transformed
into a magnetic insulator consisting on S~3/2 localized moments on a honeycomb
lattice with antiferromagnetic order and topological features.Comment: 13 pages, 10 figure
Declaration Of The Platform No To Commercialization Of Water/Turkey Against Wwf5Th In İstanbul
Dear comrades
The Utah Statesman, July 27, 1984
Weekly student newspaper of Utah State University in Logan.https://digitalcommons.usu.edu/newspapers/2581/thumbnail.jp
Letter Of The European Farmers To Turkish Parliament
Letter of The European Farmers to Turkish Parliament (Tr/En/Fr
Letter Of Initiative For The Confederation Of Farmer Unions
Letter of Initiative for the Confederation of Farmer Unions To Turkish Parliament (En/Tr
Morales Fifa Başkanıyla Görüştü
FIFA’nın 2 bin 500 metreden yüksek rakımlı kentlerde futbol maçı yapılmaması kararında sınırı 3 bin metreye çıkaran değişikliği yeterli bulmayan Bolivya lideri Evo Morales, FIFA başkanıyla görüştü
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