Semiconductor nanodevices as a probe of strong electron correlations
- URL: http://arxiv.org/abs/2105.12063v2
- Date: Fri, 1 Jul 2022 18:00:05 GMT
- Title: Semiconductor nanodevices as a probe of strong electron correlations
- Authors: P. M. T. Vianez, O. Tsyplyatyev, C. J. B. Ford
- Abstract summary: We look at how tunnelling spectroscopy can be used as the experimental tool of choice for probing correlation and interaction effects in 1D electron systems.
We present some early experimental results obtained using tunnelling devices and how they contributed to the decisive observation of both spin-charge separation and power-law behaviour.
In the second half of the chapter we introduce two nonlinear models that are counterparts to the TLL theory, known as the mobile-impurity and the mode-hierarchy pictures.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Interactions between electrons in solids are often behind exciting novel
effects such as ferromagnetism, antiferromagnetism and superconductivity. All
these phenomena break away from the single-electron picture, instead having to
take into account the collective, correlated behaviour of the system as a
whole. In this chapter we look at how tunnelling spectroscopy can be used as
the experimental tool of choice for probing correlation and interaction effects
in one-dimensional (1D) electron systems. We start by introducing the
Tomonaga-Luttinger Liquid (TLL) model, showing how it marks a clear departure
from Fermi-liquid theory. We then present some early experimental results
obtained using tunnelling devices and how they contributed to the decisive
observation of both spin-charge separation and power-law behaviour. Other
experimental techniques, such as photoemission and transport measurements, are
also discussed. In the second half of the chapter we introduce two nonlinear
models that are counterparts to the TLL theory, known as the mobile-impurity
and the mode-hierarchy pictures, and present some of the most recent
experimental evidence in support of both.
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