Journal Article

PUBDB-2024-01801

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Magnetic, Mechanically Interlocked Porphyrin–Carbon Nanotubes for Quantum Computation and Spintronics

Moreno-Da Silva, S. ; Martínez, J. I. ; Develioglu, A. ; Nieto-Ortega, B. ; de Juan-Fernández, L. ; Ruiz-Gonzalez, L. ; Picón, A.Extern*XFEL.EU* ; Oberli, S.Extern*XFEL.EU* ; Alonso, P. J. ; Moonshiram, D. (Corresponding author)Extern* ; Pérez, E. M. (Corresponding author) ; Burzurí, E. (Corresponding author)

2021
ACS Publications Washington, DC

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Please use a persistent id in citations: doi:10.1021/jacs.1c07058

Abstract: Atomic-scale reproducibility and tunability endorse magnetic molecules as candidates for spin qubits and spintronics. A major challenge is to implant those molecular spins into circuit geometries that may allow one, two, or a few spins to be addressed in a controlled way. Here, the formation of mechanically bonded, magnetic porphyrin dimeric rings around carbon nanotubes (mMINTs) is presented. The mechanical bond places the porphyrin magnetic cores in close contact with the carbon nanotube without disturbing their structures. A combination of spectroscopic techniques shows that the magnetic geometry of the dimers is preserved upon formation of the macrocycle and the mMINT. Moreover, the metallic core selection determines the spin location in the mMINT. The suitability of mMINTs as qubits is explored by measuring their quantum coherence times (T$_m$). Formation of the dimeric ring preserves the T$_m$ found in the monomer, which remains in the μs scale for mMINTs. The carbon nanotube is used as vessel to place the molecules in complex circuits. This strategy can be extended to other families of magnetic molecules. The size and composition of the macrocycle can be tailored to modulate magnetic interactions between the cores and to introduce magnetic asymmetries (heterometallic dimers) for more complex molecule-based qubits.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P64 (PETRA III)

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