Scanning tunneling microscopy of a Luttinger liquid

Authors
Citation
S. Eggert, Scanning tunneling microscopy of a Luttinger liquid, PHYS REV L, 84(19), 2000, pp. 4413-4416
Citations number
21
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
84
Issue
19
Year of publication
2000
Pages
4413 - 4416
Database
ISI
SICI code
0031-9007(20000508)84:19<4413:STMOAL>2.0.ZU;2-T
Abstract
Explicit predictions for scanning tunneling microscopy (STM) on interacting one-dimensional electron systems are made using the Luttinger liquid forma lism. The STM current changes with the distance from an impurity or boundar y in a characteristic way, which reveals the spin-charge separation and the interaction strength in the system. The current exhibits Friedel-like osci llations, but also carries additional modulated behavior as a function of v oltage and distance, which shows the spin-charge separation in real space. Moreover, very close to the boundary the current is strongly reduced, which is an indication of the interaction strength in the system.