@article{Bösch:2020:10.1103/physrevb.102.241404,
author = {Bösch, C and Dubek, T and Schindler, F and Fichtner, A and Serra-Garcia, M},
doi = {10.1103/physrevb.102.241404},
journal = {Physical Review B},
pages = {1--6},
title = {Discovery of topological metamaterials by symmetry relaxation and smooth topological indicators},
url = {http://dx.doi.org/10.1103/physrevb.102.241404},
volume = {102},
year = {2020}
}

Download

TY  - JOUR
AB  - Physical properties of a topological origin are known to be robust against small perturbations. This robustness is both a source of theoretical interest and a driver for technological applications, but presents a challenge when looking for new topological systems: Small perturbations cannot be used to identify the global direction of change in the topological indices. Here, we overcome this limitation by breaking the symmetries protecting the topology. The introduction of symmetry-breaking terms causes the topological indices to become smooth, nonquantized functions of the system parameters, which are amenable to efficient design algorithms based on gradient methods. We demonstrate this capability by designing discrete and continuous phononic systems realizing conventional and higher-order topological insulators.
AU  - Bösch,C
AU  - Dubek,T
AU  - Schindler,F
AU  - Fichtner,A
AU  - Serra-Garcia,M
DO  - 10.1103/physrevb.102.241404
EP  - 6
PY  - 2020///
SN  - 2469-9950
SP  - 1
TI  - Discovery of topological metamaterials by symmetry relaxation and smooth topological indicators
T2  - Physical Review B
UR  - http://dx.doi.org/10.1103/physrevb.102.241404
UR  - http://hdl.handle.net/10044/1/105873
VL  - 102
ER  - 

Download