Volume 142, Number 1, April 2023
|Number of page(s)||5|
|Section||Condensed matter and materials physics|
|Published online||30 March 2023|
Thermodynamics beyond isolated Dirac points: A (possible) phase transition when coalescing
Departamento de Física, FACI, Universidad de Tarapacá - Casilla 7-D, Arica, Chile
(a) E-mail: firstname.lastname@example.org (corresponding author)
Received: 26 December 2022
Accepted: 20 March 2023
Graphene is certainly a prototype of Dirac's fermion in solid physics and has been extensively considered theoretically and experimentally. Nevertheless, here we go beyond the so-called Dirac's points considering the entire spectrum. More specifically, thermodynamic properties in a large range of energies are analyzed. Relationships between entropy, internal energy, specific heat, and temperature are considered. The topology of the spectrum changes drastically beyond Dirac's points and a phase transition appears. The technique used is through the treatment of images for counting the number of states for a given energy.
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