Research paperTheoreticalComputed RamanEvolution of Superconductivity in Twisted Graphene MultilayersMin Long, Alejandro Jimeno-Pozo, Héctor Sainz-Cruz, Pierre A. Pantaleón et al.arXiv·2024·10.1038/nature26160·arXiv:2403.00903AbstractWe analyze the contribution of long-range charge fluctuations to superconductivity in twisted double graphene bilayers, helical trilayers, and related multilayers, and compare the results to twisted bilayer graphene. Using a diagrammatic Kohn-Luttinger approach with screened Coulomb interactions, electron-hole excitations, phonons, and plasmons, we study how superconducting critical temperature and order parameter evolve across these moiré graphene stacks. The work finds that TBG stands out due to Umklapp phonon dressing, while TDBG and hTTG show suppressed or lower critical temperatures depending on coupling and electric field.Read more
Twisted bilayer graphene continuum-model system used as the reference moiré stack in the superconductivity analysis.1 characterization1 property1 figureSimulatedCStudied MaterialExpand
Twisted double bilayer graphene system, modeled as two Bernal bilayers with a relative twist.1 characterization1 property1 figureSimulatedCStudied MaterialExpand
Helical trilayer graphene system in the staircase twist configuration.1 characterization1 property1 figureSimulatedCStudied MaterialExpand
Research paperTheoreticalComputed RamanEvolution of Superconductivity in Twisted Graphene MultilayersMin Long, Alejandro Jimeno-Pozo, Héctor Sainz-Cruz, Pierre A. Pantaleón et al.arXiv·2024·10.1038/nature26160·arXiv:2403.00903AbstractWe analyze the contribution of long-range charge fluctuations to superconductivity in twisted double graphene bilayers, helical trilayers, and related multilayers, and compare the results to twisted bilayer graphene. Using a diagrammatic Kohn-Luttinger approach with screened Coulomb interactions, electron-hole excitations, phonons, and plasmons, we study how superconducting critical temperature and order parameter evolve across these moiré graphene stacks. The work finds that TBG stands out due to Umklapp phonon dressing, while TDBG and hTTG show suppressed or lower critical temperatures depending on coupling and electric field.Read more
Twisted bilayer graphene continuum-model system used as the reference moiré stack in the superconductivity analysis.1 characterization1 property1 figureSimulatedCStudied MaterialExpand
Twisted double bilayer graphene system, modeled as two Bernal bilayers with a relative twist.1 characterization1 property1 figureSimulatedCStudied MaterialExpand
Helical trilayer graphene system in the staircase twist configuration.1 characterization1 property1 figureSimulatedCStudied MaterialExpand
Research paperTheoreticalComputed RamanEvolution of Superconductivity in Twisted Graphene MultilayersMin Long, Alejandro Jimeno-Pozo, Héctor Sainz-Cruz, Pierre A. Pantaleón et al.arXiv·2024·10.1038/nature26160·arXiv:2403.00903AbstractWe analyze the contribution of long-range charge fluctuations to superconductivity in twisted double graphene bilayers, helical trilayers, and related multilayers, and compare the results to twisted bilayer graphene. Using a diagrammatic Kohn-Luttinger approach with screened Coulomb interactions, electron-hole excitations, phonons, and plasmons, we study how superconducting critical temperature and order parameter evolve across these moiré graphene stacks. The work finds that TBG stands out due to Umklapp phonon dressing, while TDBG and hTTG show suppressed or lower critical temperatures depending on coupling and electric field.Read more
Twisted bilayer graphene continuum-model system used as the reference moiré stack in the superconductivity analysis.1 characterization1 property1 figureSimulatedCStudied MaterialExpand
Twisted double bilayer graphene system, modeled as two Bernal bilayers with a relative twist.1 characterization1 property1 figureSimulatedCStudied MaterialExpand
Helical trilayer graphene system in the staircase twist configuration.1 characterization1 property1 figureSimulatedCStudied MaterialExpand
Research paperTheoreticalComputed RamanEvolution of Superconductivity in Twisted Graphene MultilayersMin Long, Alejandro Jimeno-Pozo, Héctor Sainz-Cruz, Pierre A. Pantaleón et al.arXiv·2024·10.1038/nature26160·arXiv:2403.00903AbstractWe analyze the contribution of long-range charge fluctuations to superconductivity in twisted double graphene bilayers, helical trilayers, and related multilayers, and compare the results to twisted bilayer graphene. Using a diagrammatic Kohn-Luttinger approach with screened Coulomb interactions, electron-hole excitations, phonons, and plasmons, we study how superconducting critical temperature and order parameter evolve across these moiré graphene stacks. The work finds that TBG stands out due to Umklapp phonon dressing, while TDBG and hTTG show suppressed or lower critical temperatures depending on coupling and electric field.Read more
Twisted bilayer graphene continuum-model system used as the reference moiré stack in the superconductivity analysis.1 characterization1 property1 figureSimulatedCStudied MaterialExpand
Twisted double bilayer graphene system, modeled as two Bernal bilayers with a relative twist.1 characterization1 property1 figureSimulatedCStudied MaterialExpand
Helical trilayer graphene system in the staircase twist configuration.1 characterization1 property1 figureSimulatedCStudied MaterialExpand
