Nature of protected zero-energy states in Penrose quasicrystals
Nature of protected zero-energy states in Penrose quasicrystals
复制标题
彭罗斯准晶体中受保护的零能态的性质
DOI:
10.1103/physrevb.102.064210
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发表时间:
2020
影响因子:
3.7
通讯作者:
Kamenev, Alex
中科院分区:
文献类型:
--
作者:
Day-Roberts, Ezra;Fernandes, Rafael M.;Kamenev, Alex
The electronic spectrum of the Penrose rhombus quasicrystal exhibits a macroscopic fraction of exactly degenerate zero-energy states. In contrast to other bipartite quasicrystals, such as the kite-and-dart one, these zero-energy states cannot be attributed to a global mismatchbetween the number of sites in the two sublattices that form the quasicrystal. Here, we argue that these zero-energy states are instead related to alocalmismatch. Althoughaverages to 0, its staggered average over self-organized domains gives the correct number of zero-energy states. Physically, the local mismatch is related to a hidden structure of nested self-similar domains that support the zero-energy states. This allows us to develop a real-space renormalization-group scheme, which yields the scaling law for the fraction of zero-energy states,, versus the size of their support domain,, aswith(whereis the golden ratio). It also reproduces the known total fraction of zero-energy states,. We also show that the exact degeneracy of these states is protected against a wide variety of local perturbations, such as irregular or random hopping amplitudes, magnetic field, and random dilution of the lattice. We attribute this robustness to the hidden domain structure.
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DOI:
10.1103/physrevb.38.1621
发表时间:
1988
期刊:
Physical review. B, Condensed matter
影响因子:
--
作者:
Masao Arai;T. Tokihiro;T. Fujiwara;M. Kohmoto
通讯作者:
M. Kohmoto
影响因子:
8.6
作者:
Kohmoto;Sutherland
通讯作者:
Sutherland
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Loret B.;Sakai S.;Benhabib S.;Gallais Y.;Cazayous M.;M?asson M. A.;Zhong R. D.;Schneeloch J.;Gu G. D.;Forget A.;Colson D.;Paul I.;Civelli M.;Sacuto A.;Shiro Sakai;Shiro Sakai;Shiro Sakai;酒井志朗;Shiro Sakai;Shiro Sakai;Shiro Sakai;Shiro Sakai
通讯作者:
Shiro Sakai
DOI:
--
发表时间:
1987
期刊:
影响因子:
--
作者:
H. Aoyama;T. Odagaki
通讯作者:
T. Odagaki
影响因子:
8.6
作者:
A. Jagannathan
通讯作者:
A. Jagannathan