Research paperTheoreticalA generalized framework for straintronics in 2D quantum materials using group theoryRami Zemouri, A. R. Champagne, Saurabh MaitiarXiv·2024·10.1002/smll.202311185·arXiv:2410.19095AbstractWe present a general group-theoretic framework for strain corrections in two-dimensional and quasi-two-dimensional quantum materials. The theory accounts for strain effects arising from both lattice deformations and hopping modifications, expresses strain corrections in terms of band-structure parameters such as velocity and inverse mass tensor, and classifies the resulting potentials using a bond-wavevector group. We identify when strain acts as scalar- or vector-potential, discuss in-plane and out-of-plane hopping contributions, and show how multiple vector-potentials can arise in different Hilbert-space sectors. The framework is illustrated using prototypical 2D lattices and strained bilayer graphene, where an effective low-energy strain scale is identified.Read more
Research paperTheoreticalA generalized framework for straintronics in 2D quantum materials using group theoryRami Zemouri, A. R. Champagne, Saurabh MaitiarXiv·2024·10.1002/smll.202311185·arXiv:2410.19095AbstractWe present a general group-theoretic framework for strain corrections in two-dimensional and quasi-two-dimensional quantum materials. The theory accounts for strain effects arising from both lattice deformations and hopping modifications, expresses strain corrections in terms of band-structure parameters such as velocity and inverse mass tensor, and classifies the resulting potentials using a bond-wavevector group. We identify when strain acts as scalar- or vector-potential, discuss in-plane and out-of-plane hopping contributions, and show how multiple vector-potentials can arise in different Hilbert-space sectors. The framework is illustrated using prototypical 2D lattices and strained bilayer graphene, where an effective low-energy strain scale is identified.Read more
Research paperTheoreticalA generalized framework for straintronics in 2D quantum materials using group theoryRami Zemouri, A. R. Champagne, Saurabh MaitiarXiv·2024·10.1002/smll.202311185·arXiv:2410.19095AbstractWe present a general group-theoretic framework for strain corrections in two-dimensional and quasi-two-dimensional quantum materials. The theory accounts for strain effects arising from both lattice deformations and hopping modifications, expresses strain corrections in terms of band-structure parameters such as velocity and inverse mass tensor, and classifies the resulting potentials using a bond-wavevector group. We identify when strain acts as scalar- or vector-potential, discuss in-plane and out-of-plane hopping contributions, and show how multiple vector-potentials can arise in different Hilbert-space sectors. The framework is illustrated using prototypical 2D lattices and strained bilayer graphene, where an effective low-energy strain scale is identified.Read more
Research paperTheoreticalA generalized framework for straintronics in 2D quantum materials using group theoryRami Zemouri, A. R. Champagne, Saurabh MaitiarXiv·2024·10.1002/smll.202311185·arXiv:2410.19095AbstractWe present a general group-theoretic framework for strain corrections in two-dimensional and quasi-two-dimensional quantum materials. The theory accounts for strain effects arising from both lattice deformations and hopping modifications, expresses strain corrections in terms of band-structure parameters such as velocity and inverse mass tensor, and classifies the resulting potentials using a bond-wavevector group. We identify when strain acts as scalar- or vector-potential, discuss in-plane and out-of-plane hopping contributions, and show how multiple vector-potentials can arise in different Hilbert-space sectors. The framework is illustrated using prototypical 2D lattices and strained bilayer graphene, where an effective low-energy strain scale is identified.Read more
