%0 Journal Article %1 PhysRevResearch.4.023193 %A Li, Chang-An %A Choi, Sang-Jun %A Zhang, Song-Bo %A Trauzettel, Björn %D 2022 %I American Physical Society %J Phys. Rev. Res. %K a %N 2 %P 023193 %R 10.1103/PhysRevResearch.4.023193 %T Dirac states in an inclined two-dimensional Su-Schrieffer-Heeger model %U https://link.aps.org/doi/10.1103/PhysRevResearch.4.023193 %V 4 %X We propose to realize Dirac states in an inclined two-dimensional Su-Schrieffer-Heeger model on a square lattice. We show that a pair of Dirac points protected by space-time inversion symmetry appear in the semimetal phase. The locations of these Dirac points are not pinned to any high-symmetry points of the Brillouin zone but are tunable through parameter modulations. Interestingly, the merging of two Dirac points undergoes a topological phase transition that leads to either a weak topological insulator or a nodal-line semimetal. We provide a systematic analysis of these topological phases from both bulk and boundary perspectives combined with symmetry arguments. We also discuss feasible experimental platforms to realize our model.

@article{PhysRevResearch.4.023193, abstract = {We propose to realize Dirac states in an inclined two-dimensional Su-Schrieffer-Heeger model on a square lattice. We show that a pair of Dirac points protected by space-time inversion symmetry appear in the semimetal phase. The locations of these Dirac points are not pinned to any high-symmetry points of the Brillouin zone but are tunable through parameter modulations. Interestingly, the merging of two Dirac points undergoes a topological phase transition that leads to either a weak topological insulator or a nodal-line semimetal. We provide a systematic analysis of these topological phases from both bulk and boundary perspectives combined with symmetry arguments. We also discuss feasible experimental platforms to realize our model.}, added-at = {2023-10-06T15:21:53.000+0200}, author = {Li, Chang-An and Choi, Sang-Jun and Zhang, Song-Bo and Trauzettel, Björn}, biburl = {https://www.bibsonomy.org/bibtex/2afdcb8394d80434926d92166b0afb2e8/ctqmat}, day = 06, description = {Phys. Rev. Research 4, 023193 (2022) - Dirac states in an inclined two-dimensional Su-Schrieffer-Heeger model}, doi = {10.1103/PhysRevResearch.4.023193}, interhash = {3e63ac61cb92a85c6cd2a60be2537666}, intrahash = {afdcb8394d80434926d92166b0afb2e8}, journal = {Phys. Rev. Res.}, keywords = {a}, month = {06}, number = 2, numpages = {8}, pages = 023193, publisher = {American Physical Society}, timestamp = {2023-10-06T15:21:53.000+0200}, title = {Dirac states in an inclined two-dimensional Su-Schrieffer-Heeger model}, url = {https://link.aps.org/doi/10.1103/PhysRevResearch.4.023193}, volume = 4, year = 2022 }