Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Pantaleón, Pierre A."'
We investigate the electronic structure of graphene monolayers subjected to patterned dielectric superlattices. Through a quantum capacitance model approach, we simulate realistic devices capable of imposing periodic potentials on graphene. By means
Externí odkaz:
http://arxiv.org/abs/2408.05272
Autor:
Herrera, Saul, Parra-Martinez, Guillermo, Rosenzweig, Philipp, Matta, Bharti, Polley, Craig M., Kuster, Kathrin, Starke, Ulrich, Guinea, Francisco, Silva-Guillen, Jose Angel, Naumis, Gerardo G., Pantaleon, Pierre A.
The existence of superconductivity (SC) in graphene appears to be established in both twisted and non-twisted multilayers. However, whether their building block, single-layer graphene (SLG), can also host SC remains an open question. Earlier theoreti
Externí odkaz:
http://arxiv.org/abs/2408.05271
Autor:
Kumar, Roshan Krishna, Li, Geng, Bertini, Riccardo, Chaudhary, Swati, Nowakowski, Krystian, Park, Jeong Min, Castilla, Sebastian, Zhan, Zhen, Pantaleón, Pierre A., Agarwal, Hitesh, Battle-Porro, Sergi, Icking, Eike, Ceccanti, Matteo, Reserbat-Plantey, Antoine, Piccinini, Giulia, Barrier, Julien, Khestanova, Ekaterina, Taniguchi, Takashi, Watanabe, Kenji, Stampfer, Christoph, Refael, Gil, Guinea, Francisco, Jarillo-Herrero, Pablo, Song, Justin C. W., Stepanov, Petr, Lewandowski, Cyprian, Koppens, Frank H. L.
Moir\'e materials represent strongly interacting electron systems bridging topological and correlated physics. Despite significant advances, decoding wavefunction properties underlying the quantum geometry remains challenging. Here, we utilize polari
Externí odkaz:
http://arxiv.org/abs/2406.16532
Autor:
Li, Geng, Kumar, Roshan Krishna, Stepanov, Petr, Pantaleón, Pierre A., Zhan, Zhen, Agarwal, Hitesh, Bercher, Adrien, Barrier, Julien, Watanabe, Kenji, Taniguchi, Takashi, Kuzmenko, Alexey B., Guinea, Francisco, Torre, Iacopo, Koppens, Frank H. L.
Twisted bilayer graphene (TBG) represents a highly tunable, strongly correlated electron system owed to its unique flat electronic bands. However, understanding the single-particle band structure alone has been challenging due to complex lattice reco
Externí odkaz:
http://arxiv.org/abs/2404.05716
Autor:
Long, Min, Jimeno-Pozo, Alejandro, Sainz-Cruz, Hector, Pantaleon, Pierre A., Guinea, Francisco
The group of moir\'e graphene superconductors keeps growing, and by now it contains twisted graphene multilayers and twisted double bilayers. We analyze the contribution of long range charge fluctuations in the superconductivity of twisted double gra
Externí odkaz:
http://arxiv.org/abs/2403.00903
Motivated by a recent experiment [Kapfer et. al., Science {\bf 381}, 677 (2023)], we analyze the structural effects and low-energy physics of a bent nanoribbon placed on top of graphene, which creates a gradually changing moir\'e pattern. By means of
Externí odkaz:
http://arxiv.org/abs/2310.13743
Publikováno v:
Phys. Rev. Research 6, 023203 (2024)
Experiments conducted on two-dimensional twisted materials have revealed a plethora of moir\'e patterns with different forms and shapes. The formation of these patterns is usually attributed to the presence of small strains in the samples, which typi
Externí odkaz:
http://arxiv.org/abs/2309.08671
We analyze the electronic structure of twisted bilayer graphene (TBG) nanoribbons close to the magic angle. We describe a transition from an incomplete to a complete moir\'e structure. By considering zigzag and armchair edge terminations, the low-ene
Externí odkaz:
http://arxiv.org/abs/2309.06596
Autor:
Jimeno-Pozo, Alejandro, Goodwin, Zachary A. H., Pantaleón, Pierre A., Vitale, Valerio, Klebl, Lennart, Kennes, Dante M., Mostofi, Arash, Lischner, Johannes, Guinea, Francisco
We discuss the effect of long-range interactions within the self-consistent Hartree-Fock (HF) approximation in comparison to short-range atomic Hubbard interactions on the band structure of twisted bilayer graphene (TBG) at charge neutrality for vari
Externí odkaz:
http://arxiv.org/abs/2303.18025
Autor:
Cano, Beatriz Muñiz, Ferreiros, Yago, Pantaleón, Pierre A., Dai, Ji, Tallarida, Massimo, Figueroa, Adriana I., Marinova, Vera, Díez, Kevin García, Mugarza, Aitor, Valenzuela, Sergio O., Miranda, Rodolfo, Camarero, Julio, Guinea, Francisco, Silva-Guillén, Jose Angel, Valbuena, Miguel A.
Magnetic topological insulators (MTI) constitute a novel class of materials where the topologically protected band structure coexists with long-range ferromagnetic order, which can lead to the breaking of time-reversal symmetry (TRS), introducing a b
Externí odkaz:
http://arxiv.org/abs/2302.01684