Transient effects in the backscattered current of a Luttinger liquid

We study the backscattered current in a Luttinger liquid in the presence of a pointlike weak impurity switched on at finite time, taking into account finite-temperature effects. We show how the well-known results for a static impurity are distorted. We derive a dimensionless parameter τ<sub>R&...

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Detalles Bibliográficos
Autores principales:	Salvay, Mariano J., Aita, Hugo Alberto, Naón, Carlos María
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2010
Materias:	Física Physics Current (mathematics) Voltage Luttinger liquid Dimensionless quantity Condensed matter physics Luttinger parameter Transient (oscillation) Function (mathematics) Quantum mechanics Impurity
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/126081
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-126081
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física Physics Current (mathematics) Voltage Luttinger liquid Dimensionless quantity Condensed matter physics Luttinger parameter Transient (oscillation) Function (mathematics) Quantum mechanics Impurity
spellingShingle	Física Physics Current (mathematics) Voltage Luttinger liquid Dimensionless quantity Condensed matter physics Luttinger parameter Transient (oscillation) Function (mathematics) Quantum mechanics Impurity Salvay, Mariano J. Aita, Hugo Alberto Naón, Carlos María Transient effects in the backscattered current of a Luttinger liquid
topic_facet	Física Physics Current (mathematics) Voltage Luttinger liquid Dimensionless quantity Condensed matter physics Luttinger parameter Transient (oscillation) Function (mathematics) Quantum mechanics Impurity
description	We study the backscattered current in a Luttinger liquid in the presence of a pointlike weak impurity switched on at finite time, taking into account finite-temperature effects. We show how the well-known results for a static impurity are distorted. We derive a dimensionless parameter τ<sub>R</sub> as a function of the electron-electron interaction and the temperature, such that for τ<sub>R</sub> <1(>1) the switching process is relevant (irrelevant). Our results suggest the possibility of determining the value of the Luttinger parameter K through time measurements in transport experiments at fixed voltage.
format	Articulo Articulo
author	Salvay, Mariano J. Aita, Hugo Alberto Naón, Carlos María
author_facet	Salvay, Mariano J. Aita, Hugo Alberto Naón, Carlos María
author_sort	Salvay, Mariano J.
title	Transient effects in the backscattered current of a Luttinger liquid
title_short	Transient effects in the backscattered current of a Luttinger liquid
title_full	Transient effects in the backscattered current of a Luttinger liquid
title_fullStr	Transient effects in the backscattered current of a Luttinger liquid
title_full_unstemmed	Transient effects in the backscattered current of a Luttinger liquid
title_sort	transient effects in the backscattered current of a luttinger liquid
publishDate	2010
url	http://sedici.unlp.edu.ar/handle/10915/126081
work_keys_str_mv	AT salvaymarianoj transienteffectsinthebackscatteredcurrentofaluttingerliquid AT aitahugoalberto transienteffectsinthebackscatteredcurrentofaluttingerliquid AT naoncarlosmaria transienteffectsinthebackscatteredcurrentofaluttingerliquid
bdutipo_str	Repositorios
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Transient effects in the backscattered current of a Luttinger liquid

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