Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Zachariah Addison"'
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
Most higher order topological phases are realized by emulations of tight binding models. Extending these concepts to continuum theories requires the identification of invariants describing the bulk multipole order. Here the authors realize the analog
Externí odkaz:
https://doaj.org/article/71fff96789e54733839f793e9a48531f
Publikováno v:
Physical Review Research, Vol 3, Iss 4, p L042032 (2021)
We study the Fermi surface contribution to the nonlinear DC photocurrent at quadratic order in a spatially uniform optical field in the ultraclean limit. In addition to shift and injection current, we find that polarized light incident on a metallic
Externí odkaz:
https://doaj.org/article/9869984922cf48129663ada4c1d29ff4
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019)
Topological photonic structures can be understood by solving the eigenvalue problem of Maxwell’s equations in the static case. Here, the authors study Floquet topological phases in nonlinear photonic crystals under external drive and show how non-r
Externí odkaz:
https://doaj.org/article/c7f37f939e9c4a9e88fbbc197ddcb185
Publikováno v:
Science advances. 8(45)
Spontaneously broken time-reversal symmetry in magnetic materials leads to a Hall response, with a nonzero voltage transverse to an applied current, even in the absence of external magnetic fields. It is common to analyze the Hall resistivity of chir
Publikováno v:
Physical Review B. 104
We study the Fermi surface contribution to the nonlinear DC photocurrent at quadratic order in a spatially uniform optical field in the ultra-clean limit. In addition to shift and injection current, we find that polarized light incident on a metallic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::718afae7859ba21442422b3cd323f359
http://arxiv.org/abs/2011.06542
http://arxiv.org/abs/2011.06542
Autor:
Zachariah Addison, Eugene J. Mele
Publikováno v:
Physical Review B. 102
We develop a theory for the nonlinear time domain response of a Weyl semimetal driven by an ultrafast optical pulse. At quadratic order in the driving field we find that the response near a band inversion transition contains a coherent oscillating co
Publikováno v:
Physical review letters. 126(11)
We report on a theoretical analysis of the Floquet topological crystalline phases in driven one-dimensional photonic crystals mediated by second-order optical nonlinearity. We define the photonic Berry connection and photonic polarization in such sys
Publikováno v:
Nature Communications
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
Quadrupole topological phases, exhibiting protected boundary states that are themselves topological insulators of lower dimensions, have recently been of great interest. Extensions of these ideas from current tight binding models to continuum theorie
Publikováno v:
Physical Review Letters. 123
The propagation of electrons in an orbital multiplet dispersing on a lattice can support anomalous transport phenomena deriving from an orbitally-induced Berry curvature. In striking contrast to the related situation in graphene, we find that anomalo