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of 1 355
pro vyhledávání: '"FLEISCHMANN, M."'
Autor:
Theil, S., Fleischmann, M., Gupta, R., Wullschläger, F., Sharma, S., Meyer, B., Shallcross, S.
We derive a general relation between the stacking vector ${\bf u}$ describing the relative shift of two layers of bilayer graphene and the Chern index. We find $C = \nu - \text{sign}\left(|V_{AB}|-|V_{BA}|\right)$, where $\nu$ is a valley index and $
Externí odkaz:
http://arxiv.org/abs/2006.10393
Autor:
Gupta, R., Maisel, S., Rost, F., Weckbecker, D., Fleischmann, M., Soni, H., Sharma, S., Görling, A., Shallcross, S.
Publikováno v:
Phys. Rev. B 100, 085135 (2019)
We show that the physics of deformation in $\alpha$-, $\beta$-, and $6,6,12$-graphyne is, despite their significantly more complex lattice structures, remarkably close to that of graphene, with inhomogeneously strained graphyne described at low energ
Externí odkaz:
http://arxiv.org/abs/1904.11257
Autor:
Weckbecker, D., Fleischmann, M., Gupta, R., Landgraf, W., Leitherer, S., Pankratov, O., Sharma, S., Meded, V., Shallcross, S.
While a typical material exhibits field induced currents only at the boundary, a uniform out-of-plane magnetic field applied to two mutually rotated layers of graphene is shown to result in an ordered array of permanent current loops throughout the m
Externí odkaz:
http://arxiv.org/abs/1901.04712
The valence band edge in tiny angle twist bilayers of MoS$_2$ and phosphorene is shown to consist of highly localized energy levels created by a `moir\'e quantum well', i.e. trapped by the interlayer moir\'e potential. These approximately uniformly s
Externí odkaz:
http://arxiv.org/abs/1901.04679
Autor:
Rost, F., Gupta, R., Fleischmann, M., Weckbecker, D., Ray, N., Olivares, J., Vogl, M., Sharma, S., Pankratov, O., Shallcross, S.
We demonstrate that there exists a continuum Hamiltonian $H(\bf{r},\bf{p})$ that is formally the operator equivalent of the general tight-binding method, inheriting the associativity and Hermiticity of the latter operator. This provides a powerful an
Externí odkaz:
http://arxiv.org/abs/1901.04535
Publikováno v:
Phys. Rev. B 99, 125407 (2019)
We present a continuum theory of graphene treating on an equal footing both homogeneous Cauchy-Born (CB) deformation, as well as the microscopic degrees of freedom associated with the two sublattices. While our theory recovers all extant results from
Externí odkaz:
http://arxiv.org/abs/1810.04775
Autor:
Fleischmann, M., Gupta, R., Weckbecker, D., Landgraf, W., Pankratov, O., Meded, V., Shallcross, S.
Publikováno v:
Phys. Rev. B 97, 205128 (2018)
The edge physics of graphene based systems is well known to be highly sensitive to the atomic structure at the boundary, with localized zero mode edge states found only on the zigzag type termination of the lattice. Here we demonstrate that the graph
Externí odkaz:
http://arxiv.org/abs/1801.06464
Akademický článek
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We have surveyed the in-plane transport properties of the graphene twist bilayer using (i) a low-energy effective Hamiltonian for the underlying electronic structure, (ii) an isotropic elastic phonon model, and (iii) the linear Boltzmann equation for
Externí odkaz:
http://arxiv.org/abs/1611.04386
Publikováno v:
In Journal of Electroanalytical Chemistry 1 February 2019 834:114-123
