Quantum Advantage in a Molecular Spintronic Engine that Harvests Thermal Fluctuation Energy

Bibliographische Detailangaben
Veröffentlicht in:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 49 vom: 09. Dez., Seite e2206688
1. Verfasser:	Chowrira, Bhavishya (VerfasserIn)
Weitere Verfasser:	Kandpal, Lalit, Lamblin, Mathieu, Ngassam, Franck, Kouakou, Charles-Ambroise, Zafar, Talha, Mertz, Damien, Vileno, Bertrand, Kieber, Christophe, Versini, Gilles, Gobaut, Benoit, Joly, Loïc, Ferté, Tom, Monteblanco, Elmer, Bahouka, Armel, Bernard, Romain, Mohapatra, Sambit, Prima Garcia, Helena, Elidrissi, Safaa, Gavara, Miguel, Sternitzky, Emmanuel, Da Costa, Victor, Hehn, Michel, Montaigne, François, Choueikani, Fadi, Ohresser, Philippe, Lacour, Daniel, Weber, Wolfgang, Boukari, Samy, Alouani, Mebarek, Bowen, Martin
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2022
Zugriff auf das übergeordnete Werk:	Advanced materials (Deerfield Beach, Fla.)
Schlagworte:	Journal Article energy harvesting molecules quantum physics quantum thermodynamics spintronics

Beschreibung
Zusammenfassung:	© 2022 The Authors. Advanced Materials published by Wiley-VCH GmbH. Recent theory and experiments have showcased how to harness quantum mechanics to assemble heat/information engines with efficiencies that surpass the classical Carnot limit. So far, this has required atomic engines that are driven by cumbersome external electromagnetic sources. Here, using molecular spintronics, an implementation that is both electronic and autonomous is proposed. The spintronic quantum engine heuristically deploys several known quantum assets by having a chain of spin qubits formed by the paramagnetic Co center of phthalocyanine (Pc) molecules electronically interact with electron-spin-selecting Fe/C60 interfaces. Density functional calculations reveal that transport fluctuations across the interface can stabilize spin coherence on the Co paramagnetic centers, which host spin flip processes. Across vertical molecular nanodevices, enduring dc current generation, output power above room temperature, two quantum thermodynamical signatures of the engine's processes, and a record 89% spin polarization of current across the Fe/C60 interface are measured. It is crucially this electron spin selection that forces, through demonic feedback and control, charge current to flow against the built-in potential barrier. Further research into spintronic quantum engines, insight into the quantum information processes within spintronic technologies, and retooling the spintronic-based information technology chain, can help accelerate the transition to clean energy
Beschreibung:	Date Completed 09.12.2022 Date Revised 09.12.2022 published: Print-Electronic Citation Status PubMed-not-MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.202206688