Zobrazeno 1 - 10
of 346
pro vyhledávání: '"P. Pangburn"'
We investigate the emergence of topological features in the charge excitations of Mott insulators in the Chern-Hubbard model. In the strong correlation regime, treating electrons as the sum of holons and doublons excitations, we compute the topologic
Externí odkaz:
http://arxiv.org/abs/2412.13302
We investigate the charge density wave phase in the strongly correlated Hubbard model without any other broken symmetry phase. Starting from the atomic Hamiltonian with no hopping, we generate quasiparticle operators corresponding to holons and doubl
Externí odkaz:
http://arxiv.org/abs/2410.09903
Quantum materials featuring both itinerant and localized degrees of freedom exhibit numerous exotic phases and transitions that deviate from the Ginzburg-Landau paradigm. This work uses the composite operator formalism to examine two-orbital strongly
Externí odkaz:
http://arxiv.org/abs/2407.11126
We consider the most energetically favorable symmetry-allowed spin-singlet and spin-triplet superconducting pairing symmetries in twisted bilayer graphene at the magic angle, whose normal state physics is described by a six-band effective tight-bindi
Externí odkaz:
http://arxiv.org/abs/2307.13030
Publikováno v:
J. Phys.: Condens. Matter 2024 Vol. 36 255601
We use the composite operator method (COM) to analyze the strongly correlated repulsive Hubbard model, investigating the effect of nearest-neighbor hoppings up to fourth order on a square lattice. We consider two sets of self-consistent equations, on
Externí odkaz:
http://arxiv.org/abs/2305.08591
We revisit a phenomenological model of fermions coupled to fluctuating bosons that emerges from finite-momentum particle-particle pairs for describing the strange metal phase in the cuprates. The incoherent bosons dominate the transport properties fo
Externí odkaz:
http://arxiv.org/abs/2301.07125
Autor:
Pangburn, Emile, Haurie, Louis, Crépieux, Adeline, Awoga, Oladunjoye A., Sedlmayr, Nicholas, Black-Schaffer, Annica M., Pépin, Catherine, Bena, Cristina
We consider the most energetically favorable symmetry-allowed spin-singlet and spin-triplet superconducting pairing symmetries in monolayer and few-layer graphene, and for each calculate the energy spectrum in the presence of a scalar or magnetic imp
Externí odkaz:
http://arxiv.org/abs/2212.07445
Superconductivity in monolayer and few-layer graphene: II. Topological edge states and Chern numbers
Autor:
Crépieux, Adeline, Pangburn, Emile, Haurie, Louis, Awoga, Oladunjoye A., Black-Schaffer, Annica M., Sedlmayr, Nicholas, Pépin, Catherine, Bena, Cristina
We study the emergence of electronic edge states in superconducting (SC) monolayer, bilayer, and trilayer graphene for both spin-singlet and spin-triplet SC order parameters. We focus mostly on the gapped chiral $p+ip'$- and $d+id'$-wave SC states th
Externí odkaz:
http://arxiv.org/abs/2211.11778
Autor:
Pangburn, Emile, Haurie, Louis, Crépieux, Adeline, Awoga, Oladunjoye A., Black-Schaffer, Annica M., Pépin, Catherine, Bena, Cristina
We review all symmetry-allowed spin-singlet and spin-triplet superconducting (SC) order parameters in graphene ($s$-wave, $d$-wave, $p$-wave, and $f$-wave) generated by generic onsite, nearest-neighbor (NN), and next-to-nearest-neighbor (NNN) pairing
Externí odkaz:
http://arxiv.org/abs/2211.05146
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