Electronic Characterization of a Charge-Transfer Complex Monolayer on Graphene

Overview

Journal ACS Nano

Publisher American Chemical Society

Specialty Biotechnology

Date 2021 May 24

PMID 34028269

Citations 4

Authors

Avijit Kumar

Kaustuv Banerjee

Mikko M Ervasti

Shawulienu Kezilebieke

Marc Dvorak

Patrick Rinke

Ari Harju

Peter Liljeroth

Affiliations

Soon will be listed here.

Abstract

Organic charge-transfer complexes (CTCs) formed by strong electron acceptor and strong electron donor molecules are known to exhibit exotic effects such as superconductivity and charge density waves. We present a low-temperature scanning tunneling microscopy and spectroscopy (LT-STM/STS) study of a two-dimensional (2D) monolayer CTC of tetrathiafulvalene (TTF) and fluorinated tetracyanoquinodimethane (FTCNQ), self-assembled on the surface of oxygen-intercalated epitaxial graphene on Ir(111) (G/O/Ir(111)). We confirm the formation of the charge-transfer complex by d/d spectroscopy and direct imaging of the singly occupied molecular orbitals. High-resolution spectroscopy reveals a gap at zero bias, suggesting the formation of a correlated ground state at low temperatures. These results point to the possibility to realize and study correlated ground states in charge-transfer complex monolayers on weakly interacting surfaces.

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References

Enoki T, Miyazaki A . Magnetic TTF-based charge-transfer complexes. Chem Rev. 2004; 104(11):5449-78. DOI: 10.1021/cr0306438. View

V M, Chen , Jamneala , Crommie , Wingreen . Tunneling into a single magnetic atom: spectroscopic evidence of the kondo resonance . Science. 1998; 280(5363):567-9. DOI: 10.1126/science.280.5363.567. View

Martinez-Galera A, Schroder U, Huttmann F, Jolie W, Craes F, Busse C . Oxygen orders differently under graphene: new superstructures on Ir(111). Nanoscale. 2015; 8(4):1932-43. DOI: 10.1039/c5nr04976h. View

Kumar A, Banerjee K, Dvorak M, Schulz F, Harju A, Rinke P . Charge-Transfer-Driven Nonplanar Adsorption of FTCNQ Molecules on Epitaxial Graphene. ACS Nano. 2017; 11(5):4960-4968. DOI: 10.1021/acsnano.7b01599. View

Binnig , Frank , FUCHS , Garcia , Reihl , Rohrer . Tunneling spectroscopy and inverse photoemission: Image and field states. Phys Rev Lett. 1985; 55(9):991-994. DOI: 10.1103/PhysRevLett.55.991. View

Horcas I, Fernandez R, Gomez-Rodriguez J, Colchero J, Gomez-Herrero J, Baro A . WSXM: a software for scanning probe microscopy and a tool for nanotechnology. Rev Sci Instrum. 2007; 78(1):013705. DOI: 10.1063/1.2432410. View

Halle J, Neel N, Fonin M, Brandbyge M, Kroger J . Understanding and Engineering Phonon-Mediated Tunneling into Graphene on Metal Surfaces. Nano Lett. 2018; 18(9):5697-5701. DOI: 10.1021/acs.nanolett.8b02295. View

Clark K, Hassanien A, Khan S, Braun K, Tanaka H, Hla S . Superconductivity in just four pairs of (BETS)2GaCl4 molecules. Nat Nanotechnol. 2010; 5(4):261-5. DOI: 10.1038/nnano.2010.41. View

Tkatchenko A, Scheffler M . Accurate molecular van der Waals interactions from ground-state electron density and free-atom reference data. Phys Rev Lett. 2009; 102(7):073005. DOI: 10.1103/PhysRevLett.102.073005. View

10.

Jackel F, Perera U, Iancu V, Braun K, Koch N, Rabe J . Investigating molecular charge transfer complexes with a low temperature scanning tunneling microscope. Phys Rev Lett. 2008; 100(12):126102. DOI: 10.1103/PhysRevLett.100.126102. View

11.

Perdew , Burke , Ernzerhof . Generalized Gradient Approximation Made Simple. Phys Rev Lett. 1996; 77(18):3865-3868. DOI: 10.1103/PhysRevLett.77.3865. View

12.

de la Torre B, Svec M, Foti G, Krejci O, Hapala P, Garcia-Lekue A . Submolecular Resolution by Variation of the Inelastic Electron Tunneling Spectroscopy Amplitude and its Relation to the AFM/STM Signal. Phys Rev Lett. 2017; 119(16):166001. DOI: 10.1103/PhysRevLett.119.166001. View

13.

Askerka M, Maurer R, Batista V, Tully J . Role of Tensorial Electronic Friction in Energy Transfer at Metal Surfaces. Phys Rev Lett. 2016; 116(21):217601. DOI: 10.1103/PhysRevLett.116.217601. View

14.

Jarvi J, Rinke P, Todorovic M . Detecting stable adsorbates of (1)-camphor on Cu(111) with Bayesian optimization. Beilstein J Nanotechnol. 2020; 11:1577-1589. PMC: 7590619. DOI: 10.3762/bjnano.11.140. View

15.

Zhang J, Xu W, Sheng P, Zhao G, Zhu D . Organic Donor-Acceptor Complexes as Novel Organic Semiconductors. Acc Chem Res. 2017; 50(7):1654-1662. DOI: 10.1021/acs.accounts.7b00124. View

16.

Himanen L, Geurts A, Foster A, Rinke P . Data-Driven Materials Science: Status, Challenges, and Perspectives. Adv Sci (Weinh). 2019; 6(21):1900808. PMC: 6839624. DOI: 10.1002/advs.201900808. View

17.

Fritz L, Vojta M . The physics of Kondo impurities in graphene. Rep Prog Phys. 2013; 76(3):032501. DOI: 10.1088/0034-4885/76/3/032501. View

18.

Jiang Y, Lo P, May D, Li G, Guo G, Anders F . Inducing Kondo screening of vacancy magnetic moments in graphene with gating and local curvature. Nat Commun. 2018; 9(1):2349. PMC: 6002358. DOI: 10.1038/s41467-018-04812-6. View

19.

Jerome D . Organic conductors: from charge density wave TTF-TCNQ to superconducting (TMTSF)2PF6. Chem Rev. 2004; 104(11):5565-92. DOI: 10.1021/cr030652g. View

20.

Jeon S, Doak P, Sumpter B, Ganesh P, Maksymovych P . Thermodynamic Control of Two-Dimensional Molecular Ionic Nanostructures on Metal Surfaces. ACS Nano. 2016; 10(8):7821-9. DOI: 10.1021/acsnano.6b03492. View