Interplay between Magnetoresistance and Kondo Resonance in Radical Single-Molecule Junctions

Mitra, Gautam; Low, Jonathan Z.; Wei, Sujun; Francisco, Karol R.; Deffner, Michael; Herrmann, Carmen; Campos, Luis M.; Scheer, Elke

Interplay between Magnetoresistance and Kondo Resonance in Radical Single-Molecule Junctions

Dateien

Zu diesem Dokument gibt es keine Dateien.

Datum

2022

Autor:innen

Mitra, Gautam

Low, Jonathan Z.

Wei, Sujun

Francisco, Karol R.

Deffner, Michael

Herrmann, Carmen

Campos, Luis M.

Scheer, Elke

DOI (zitierfähiger Link)

https://doi.org/10.1021/acs.nanolett.2c01199

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Nano Letters. American Chemical Society (ACS). 2022, 22(14), pp. 5773-5779. ISSN 1530-6984. eISSN 1530-6992. Available under: doi: 10.1021/acs.nanolett.2c01199

Zusammenfassung

We report transport measurements on tunable single-molecule junctions of the organic perchlorotrityl radical molecule, contacted with gold electrodes at low temperature. The current–voltage characteristics of a subset of junctions shows zero-bias anomalies due to the Kondo effect and in addition elevated magnetoresistance (MR). Junctions without Kondo resonance reveal a much stronger MR. Furthermore, we show that the amplitude of the MR can be tuned by mechanically stretching the junction. On the basis of these findings, we attribute the high MR to an interference effect involving spin-dependent scattering at the metal–molecule interface and assign the Kondo effect to the unpaired spin located in the center of the molecule in asymmetric junctions.

Fachgebiet (DDC)

530 Physik

Schlagwörter

Tunable single-molecule junctions, prganic perchlorotrityl radical molecule, gold electrodes, low temperature, Kondo effect

Zitieren

ISO 690

MITRA, Gautam, Jonathan Z. LOW, Sujun WEI, Karol R. FRANCISCO, Michael DEFFNER, Carmen HERRMANN, Luis M. CAMPOS, Elke SCHEER, 2022. Interplay between Magnetoresistance and Kondo Resonance in Radical Single-Molecule Junctions. In: Nano Letters. American Chemical Society (ACS). 2022, 22(14), pp. 5773-5779. ISSN 1530-6984. eISSN 1530-6992. Available under: doi: 10.1021/acs.nanolett.2c01199

BibTex

@article{Mitra2022-07-27Inter-58078,
  year={2022},
  doi={10.1021/acs.nanolett.2c01199},
  title={Interplay between Magnetoresistance and Kondo Resonance in Radical Single-Molecule Junctions},
  number={14},
  volume={22},
  issn={1530-6984},
  journal={Nano Letters},
  pages={5773--5779},
  author={Mitra, Gautam and Low, Jonathan Z. and Wei, Sujun and Francisco, Karol R. and Deffner, Michael and Herrmann, Carmen and Campos, Luis M. and Scheer, Elke}
}

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