Advances in 2D Materials and Symmetry Breaking in Graphene

A special issue of Symmetry (ISSN 2073-8994).

Deadline for manuscript submissions: 30 September 2026 | Viewed by 651

Special Issue Editors


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Guest Editor
Departamento de Física, Universidad de La Serena, Casilla 554, La Serena, Chile
Interests: solid-state physics; condensed matter; complex systems

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Guest Editor
Departamento de Física, FACI, Universidad de Tarapacá, Casilla 7-D, Arica, Chile
Interests: multidisciplinary physics; condensed matter physics; applied physics

Special Issue Information

Dear Colleagues,

In this Special Issue, emphasis is placed on materials science and condensed matter physics, encompassing both theoretical and experimental research. The primary focus is on recent advances in two-dimensional (2D) materials, particularly those exhibiting properties that emerge from symmetry breaking in graphene.

Graphene possesses intrinsic crystallographic and electronic symmetries that can be disrupted by various factors, such as external electric fields, mechanical deformations, or twist angles between layers. This symmetry breaking gives rise to novel and often remarkable properties, underscoring the significance of this research area and opening perspectives for the design of materials with tunable electronic, optical, mechanical, thermodynamic, and other functional properties.

Of particular interest are applied and experimental research in areas such as next-generation transistors, quantum sensors, photonic devices, superconducting systems, electronic transport, and thermodynamic transfer mechanisms. Contributions in fundamental physics addressing the principles and consequences of symmetry breaking are also highly encouraged.

We look forward to receiving your contributions.

Dr. Luis O. Palma-Chilla
Dr. Juan César Flores Araya
Guest Editors

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Keywords

  • graphene and symmetries
  • symmetry breaking
  • electronics
  • thermodynamics
  • optics
  • 2D band structures

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Published Papers (1 paper)

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Research

10 pages, 1141 KB  
Article
Electronic Particle-Density Asymmetry in Doped Bilayer Graphene with Effective Fractional Dimensionality
by Juan A. Lazzús and L. Palma-Chilla
Symmetry 2026, 18(2), 388; https://doi.org/10.3390/sym18020388 - 23 Feb 2026
Cited by 2 | Viewed by 332
Abstract
This work investigates how effective fractional dimensionality and substitutional doping jointly affect particle-density symmetry in AA-stacked bilayer graphene (BLG). The system consists of one pristine graphene layer and one doped layer, where 50% of the atomic sites are substituted. Doping is described within [...] Read more.
This work investigates how effective fractional dimensionality and substitutional doping jointly affect particle-density symmetry in AA-stacked bilayer graphene (BLG). The system consists of one pristine graphene layer and one doped layer, where 50% of the atomic sites are substituted. Doping is described within a tight-binding framework through a dimensionless parameter α (with 0<α<1), which uniformly reduces the intralayer hopping energy in the doped layer, while an effective fractional dimension D>2 phenomenologically accounts for structural inhomogeneities such as ripples or corrugations. Analytical expressions for the energy spectrum and number of states are obtained, and the electronic asymmetry between layers is characterized by a symmetry parameter P. We find that substitutional doping breaks the particle-density symmetry of pristine BLG and strongly enhances the number of states near the Fermi level as α decreases, due to the accumulation of low-energy states in the doped layer. Departures from the ideal dimensionality D=2 further amplify this enhancement. The combined effects of reduced α and increased D lead to a pronounced layer asymmetry, reflected in a nonzero P, while stronger interlayer coupling partially counteracts this imbalance. Results show that doping, effective fractional dimensionality, and interlayer coupling offer tunable control over the low-energy electronic properties of BLG. Full article
(This article belongs to the Special Issue Advances in 2D Materials and Symmetry Breaking in Graphene)
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