Acta Physica Sinica, Volume. 69, Issue 7, 070302-1(2020)
Fig. 1. Hofstadter butterfly: the energy spectrum varying with
. The red dotted point denotes the Majorana Fermion.
and
Fig. 2. Topological phase diagram in
plane with
. (a)
; (b)
; (c)
,
Fig. 3. Energy varying with phase shift
with
,
and
under open boundary condition.
Fig. 4. (a) The lowest excitation energies,
, varying with the quasi-periodic modulation amplitude, V, under OBC and PBC, respectively. The spatial distribution of the lowest excited state
(b),
(c).
,
,
,
.
Fig. 5. (a)
topological invariant varying with the strength of the potential
; (c) the scaling of
. Here,
,
,
,
.
Fig. 6. varying with the amplitude of quasi-periodic modulation
.
,
,
: (a)
; (b)
; (c)
; (d)
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Jing-Nan Wu, Zhi-Hao Xu, Zhan-Peng Lu, Yun-Bo Zhang.
Category:
Received: Dec. 10, 2019
Accepted: --
Published Online: Nov. 20, 2020
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