Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On-demand large-conductance in trivial zero-bias tunneling peaks in
  Majorana nanowires   Motivated by recent experiments that report the almost-generic
large-conductance peaks without very extensive fine-tuning, we propose an
alternative mechanism through direct theoretical simulations that can explain
the large zero-bias conductance peaks being generated on-demand in the
nontopological regime in Majorana nanowires by satisfying the following three
sufficient conditions: (i) strong potential disorder in the bulk of the
nanowire, suppressing the topological regime; (ii) strong suppression of the
disorder near the nanowire ends connecting to the tunneling leads, perhaps
because of screening by the metallic leads and gates; and (iii) low tunnel
barrier strength leading to large tunneling amplitude. The third condition is
typically achieved experimentally by fine-tuning the tunnel barrier and the
first condition is generic in all existing nanowires by virtue of considerable
sample disorder induced by unintentional random quenched charged impurities.
The second condition is likely to apply to many samples since the disorder
potential would be typically screened more strongly at the wire ends because of
the large metallic tunnel pads used experimentally. We show that the resultant
tunneling conductance manifests large trivial zero-bias peaks almost on demand,
and such peaks could be $\sim 2e^2/h$, when appropriately fine-tuned by the
tunnel barrier strength and the temperature, as reported experimentally. Our
work not only solves the mystery in recent experiments that the observations of
the large zero-bias conductance peaks are generic by proposing a theoretically
possible mechanism but also explains why these hypothesized conditions are
naturally satisfied in experiments.

12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
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The categories of this paper are: eess
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph