NMR parameters in gapped graphene systems

Mircea Crisan, Ioan Grosu and Ionel Ţifrea ()
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Mircea Crisan: “Babeş-Bolyai” University
Ioan Grosu: “Babeş-Bolyai” University
Ionel Ţifrea: California State University

The European Physical Journal B: Condensed Matter and Complex Systems, 2016, vol. 89, issue 6, 1-7

Abstract: Abstract We calculate the nuclear spin-lattice relaxation time and the Knight shift for the case of gapped graphene systems. Our calculations consider both the massive and massless gap scenarios. Both the spin-lattice relaxation time and the Knight shift depend on temperature, chemical potential, and the value of the electronic energy gap. In particular, at the Dirac point, the electronic energy gap has stronger effects on the system nuclear magnetic resonance parameters in the case of the massless gap scenario. Differently, at large values of the chemical potential, both gap scenarios behave in a similar way and the gapped graphene system approaches a Fermi gas from the nuclear magnetic resonance parameters point of view. Our results are important for nuclear magnetic resonance measurements that target the 13C active nuclei in graphene samples.

Keywords: Solid; State; and; Materials (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1140/epjb/e2016-60843-x

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