Resonant Tip-Enhanced Raman Spectroscopy of a Single-Molecule Kondo System
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F24%3A00586177" target="_blank" >RIV/61388963:_____/24:00586177 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/24:00586289 RIV/00216208:11320/24:10494607
Result on the web
<a href="https://doi.org/10.1021/acsnano.4c02105" target="_blank" >https://doi.org/10.1021/acsnano.4c02105</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsnano.4c02105" target="_blank" >10.1021/acsnano.4c02105</a>
Alternative languages
Result language
angličtina
Original language name
Resonant Tip-Enhanced Raman Spectroscopy of a Single-Molecule Kondo System
Original language description
Tip-enhanced Raman spectroscopy (TERS) under ultrahigh vacuum and cryogenic conditions enables exploration of the relations between the adsorption geometry, electronic state, and vibrational fingerprints of individual molecules. TERS capability of reflecting spin states in open-shell molecular configurations is yet unexplored. Here, we use the tip of a scanning probe microscope to lift a perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) molecule from a metal surface to bring it into an open-shell spin one-half anionic state. We reveal a correlation between the appearance of a Kondo resonance in differential conductance spectroscopy and concurrent characteristic changes captured by the TERS measurements. Through a detailed investigation of various adsorbed and tip-contacted PTCDA scenarios, we infer that the Raman scattering on suspended PTCDA is resonant with a higher excited state. Theoretical simulation of the vibrational spectra enables a precise assignment of the individual TERS peaks to high-symmetry Ag modes, including the fingerprints of the observed spin state. These findings highlight the potential of TERS in capturing complex interactions between charge, spin, and photophysical properties in nanoscale molecular systems and suggest a pathway for designing single-molecule spin-optical devices.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Nano
ISSN
1936-0851
e-ISSN
1936-086X
Volume of the periodical
18
Issue of the periodical within the volume
20
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
13164-13170
UT code for WoS article
001225101200001
EID of the result in the Scopus database
2-s2.0-85193237605