Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Atomic scale variation of electron tunneling into a Luttinger liquid ? :
  High resolution scanning tunneling spectroscopy study on Au/Ge(001)   Au-induced atomic wires on the Ge(001) surface were recently claimed to be an
ideal 1D metal and their tunneling spectra were analyzed as the manifestation
of a Tomonaga-Luttinger liquid (TLL) state. We reinvestigate this system for
atomically well-ordered areas of the surface with high resolution scanning
tunneling microscopy and spectroscopy (STS). The local density-of-states maps
do not provide any evidence of a metallic 1D electron channel along the wires.
Moreover, the atomically resolved tunneling spectra near the Fermi energy are
dominated by local density-of-states features, deviating qualitatively from the
power-law behavior. On the other hand, the defects strongly affect the
tunneling spectra near the Fermi level. These results do not support the
possibility of a TLL state for this system. An 1D metallic system with
well-defined 1D bands and without defects are required for the STS study of a
TLL state.

11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th