Research paperComputational DFTTheoreticalMagnetically tuned topological phase in graphene nanoribbon heterojunctionsWei-Jian Li, Da-Fei Sun, Sheng Ju, Ai-Lei He et al.arXiv·2024·10.1103/lphs-gz7c·arXiv:2412.00859AbstractWe report an accessible scheme to engineer robust Z₂ topology by intrinsic magnetism originating from the zigzag segment connecting two armchair segments with different width in one-dimensional graphene nanoribbon heterojunctions. First-principle and model simulations show that emergent spin polarization modifies dimerization between junction states, forming a magnetic Su-Schrieffer-Heeger mechanism. In the magnetic state, the bulk Z₂ topology depends solely on the width of the narrow armchair segment, and the bulk energy band gap increases by an order of magnitude relative to the nonmagnetic state.Read more
8-8-9-17 graphene nanoribbon heterojunction used to analyze junction states and magnetic configurations.3 propertiesSimulatedCStudied MaterialExpand
2-3-9-17 graphene nanoribbon heterojunction minimal model used for magnetic and topological phase analysis.3 propertiesSimulatedCStudied MaterialExpand
8-8-9-13 graphene nanoribbon heterojunction used as a comparison case for junction-state counting and topology.2 propertiesSimulatedCStudied MaterialExpand
Research paperComputational DFTTheoreticalMagnetically tuned topological phase in graphene nanoribbon heterojunctionsWei-Jian Li, Da-Fei Sun, Sheng Ju, Ai-Lei He et al.arXiv·2024·10.1103/lphs-gz7c·arXiv:2412.00859AbstractWe report an accessible scheme to engineer robust Z₂ topology by intrinsic magnetism originating from the zigzag segment connecting two armchair segments with different width in one-dimensional graphene nanoribbon heterojunctions. First-principle and model simulations show that emergent spin polarization modifies dimerization between junction states, forming a magnetic Su-Schrieffer-Heeger mechanism. In the magnetic state, the bulk Z₂ topology depends solely on the width of the narrow armchair segment, and the bulk energy band gap increases by an order of magnitude relative to the nonmagnetic state.Read more
8-8-9-17 graphene nanoribbon heterojunction used to analyze junction states and magnetic configurations.3 propertiesSimulatedCStudied MaterialExpand
2-3-9-17 graphene nanoribbon heterojunction minimal model used for magnetic and topological phase analysis.3 propertiesSimulatedCStudied MaterialExpand
8-8-9-13 graphene nanoribbon heterojunction used as a comparison case for junction-state counting and topology.2 propertiesSimulatedCStudied MaterialExpand
Research paperComputational DFTTheoreticalMagnetically tuned topological phase in graphene nanoribbon heterojunctionsWei-Jian Li, Da-Fei Sun, Sheng Ju, Ai-Lei He et al.arXiv·2024·10.1103/lphs-gz7c·arXiv:2412.00859AbstractWe report an accessible scheme to engineer robust Z₂ topology by intrinsic magnetism originating from the zigzag segment connecting two armchair segments with different width in one-dimensional graphene nanoribbon heterojunctions. First-principle and model simulations show that emergent spin polarization modifies dimerization between junction states, forming a magnetic Su-Schrieffer-Heeger mechanism. In the magnetic state, the bulk Z₂ topology depends solely on the width of the narrow armchair segment, and the bulk energy band gap increases by an order of magnitude relative to the nonmagnetic state.Read more
8-8-9-17 graphene nanoribbon heterojunction used to analyze junction states and magnetic configurations.3 propertiesSimulatedCStudied MaterialExpand
2-3-9-17 graphene nanoribbon heterojunction minimal model used for magnetic and topological phase analysis.3 propertiesSimulatedCStudied MaterialExpand
8-8-9-13 graphene nanoribbon heterojunction used as a comparison case for junction-state counting and topology.2 propertiesSimulatedCStudied MaterialExpand
Research paperComputational DFTTheoreticalMagnetically tuned topological phase in graphene nanoribbon heterojunctionsWei-Jian Li, Da-Fei Sun, Sheng Ju, Ai-Lei He et al.arXiv·2024·10.1103/lphs-gz7c·arXiv:2412.00859AbstractWe report an accessible scheme to engineer robust Z₂ topology by intrinsic magnetism originating from the zigzag segment connecting two armchair segments with different width in one-dimensional graphene nanoribbon heterojunctions. First-principle and model simulations show that emergent spin polarization modifies dimerization between junction states, forming a magnetic Su-Schrieffer-Heeger mechanism. In the magnetic state, the bulk Z₂ topology depends solely on the width of the narrow armchair segment, and the bulk energy band gap increases by an order of magnitude relative to the nonmagnetic state.Read more
8-8-9-17 graphene nanoribbon heterojunction used to analyze junction states and magnetic configurations.3 propertiesSimulatedCStudied MaterialExpand
2-3-9-17 graphene nanoribbon heterojunction minimal model used for magnetic and topological phase analysis.3 propertiesSimulatedCStudied MaterialExpand
8-8-9-13 graphene nanoribbon heterojunction used as a comparison case for junction-state counting and topology.2 propertiesSimulatedCStudied MaterialExpand
