气候变化领域集成服务门户(CCPortal): Quantum units from the topological engineering of molecular graphenoids

CCPortal

DOI	10.1126/science.aay7203
	Quantum units from the topological engineering of molecular graphenoids
	Lombardi F.; Lodi A.; Ma J.; Liu J.; Slota M.; Narita A.; Myers W.K.; Müllen K.; Feng X.; Bogani L.
发表日期	2019
ISSN	0036-8075
起始页码	1107
结束页码	1110
卷号	366 期号:6469
英文摘要	Robustly coherent spin centers that can be integrated into devices are a key ingredient of quantum technologies. Vacancies in semiconductors are excellent candidates, and theory predicts that defects in conjugated carbon materials should also display long coherence times. However, the quantum performance of carbon nanostructures has remained stunted by an inability to alter the sp2-carbon lattice with atomic precision. Here, we demonstrate that topological tailoring leads to superior quantum performance in molecular graphene nanostructures. We unravel the decoherence mechanisms, quantify nuclear and environmental effects, and observe spin-coherence times that outclass most nanomaterials. These results validate long-standing assumptions on the coherent behavior of topological defects in graphene and open up the possibility of introducing controlled quantum-coherent centers in the upcoming generation of carbon-based optoelectronic, electronic, and bioactive systems. © 2019 American Association for the Advancement of Science. All rights reserved.
英文关键词	carbon disulfide; carbon nanotube; graphene; quantum dot; toluene; engineering; molecular analysis; nanoparticle; quantum mechanics; topology; Article; bioengineering; conjugation; dehydrogenation; electron spin resonance; limit of quantitation; low temperature; mass spectrometry; measurement precision; oscillation; priority journal; room temperature; simulation; synthesis
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244571
作者单位	Department of Materials, University of Oxford, 16 Parks Road, Oxford, OX1 3PH, United Kingdom; Center for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Mommsenstraße 4, Dresden, 01069, Germany; Max Planck Institut für Polymerforschung, Ackermannweg 10, Mainz, 55128, Germany; Inorganic Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, United Kingdom; Department of Chemistry, State Key Laboratory of Synthetic Chemistry, University of Hong Kong, Pokfulam Road, Hong Kong, Hong Kong; Organic and Carbon Nanomaterials Unit, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Kunigami, Okinawa 904-0495, Japan; Institute of Physical Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, Mainz, D-55128, Germany
推荐引用方式 GB/T 7714	Lombardi F.,Lodi A.,Ma J.,et al. Quantum units from the topological engineering of molecular graphenoids[J],2019,366(6469).
APA	Lombardi F..,Lodi A..,Ma J..,Liu J..,Slota M..,...&Bogani L..(2019).Quantum units from the topological engineering of molecular graphenoids.Science,366(6469).
MLA	Lombardi F.,et al."Quantum units from the topological engineering of molecular graphenoids".Science 366.6469(2019).