Site-specific kondo effect at ambient temperatures in iron-based molecules

Kondo resonances are a very precise measure of spin-polarized transport through magnetic impurities. However, the Kondo temperature, indicating the thermal range of stability of the magnetic properties, is very low. By contrast, we find for iron phthalocyanine a Kondo temperature in spectroscopic me...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2007-09, Vol.99 (10), p.106402-106402, Article 106402
Main Authors: Gao, L, Ji, W, Hu, Y B, Cheng, Z H, Deng, Z T, Liu, Q, Jiang, N, Lin, X, Guo, W, Du, S X, Hofer, W A, Xie, X C, Gao, H-J
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Kondo resonances are a very precise measure of spin-polarized transport through magnetic impurities. However, the Kondo temperature, indicating the thermal range of stability of the magnetic properties, is very low. By contrast, we find for iron phthalocyanine a Kondo temperature in spectroscopic measurements which is well above room temperature. It is also shown that the signal of the resonance depends strongly on the adsorption site of the molecule on a gold surface. Experimental data are verified by extensive numerical simulations, which establish that the coupling between iron states and states of the substrate depends strongly on the adsorption configuration.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.99.106402