{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T14:42:50Z","timestamp":1758638570158},"reference-count":26,"publisher":"World Scientific Pub Co Pte Lt","issue":"10","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rev. Math. Phys."],"published-print":{"date-parts":[[2014,11]]},"abstract":"<jats:p> We study the spectral properties of the two-dimensional Dirac operator on bounded domains together with the appropriate boundary conditions which provide a (continuous) model for graphene nanoribbons. These are of two types, namely, the so-called armchair and zigzag boundary conditions, depending on the line along which the material was cut. In the former case, we show that the spectrum behaves in what might be called a classical way; while in the latter, we prove the existence of a sequence of finite multiplicity eigenvalues converging to zero and which correspond to edge states. <\/jats:p>","DOI":"10.1142\/s0129055x14500184","type":"journal-article","created":{"date-parts":[[2014,11,19]],"date-time":"2014-11-19T02:00:03Z","timestamp":1416362403000},"page":"1450018","source":"Crossref","is-referenced-by-count":13,"title":["Spectra of graphene nanoribbons with armchair and zigzag boundary conditions"],"prefix":"10.1142","volume":"26","author":[{"given":"Pedro","family":"Freitas","sequence":"first","affiliation":[{"name":"Departamento de Matem\u00e1tica, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal"},{"name":"Group of Mathematical Physics, Universidade de Lisboa, Complexo Interdisciplinar, Av. 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