TY - JOUR
T1 - Barut-Girardello coherent states for anisotropic 2D-Dirac materials
AU - Diaz-Bautista, E.
AU - Concha-Sánchez, Y.
AU - Raya, A.
N1 - Publisher Copyright:
© 2019 IOP Publishing Ltd.
PY - 2019/7/30
Y1 - 2019/7/30
N2 - We construct the Barut-Girardello coherent states for charge carriers in anisotropic 2D-Dirac materials immersed in a constant homogeneous magnetic field which is orthogonal to the sample surface. For that purpose, we solve the anisotropic Dirac equation and identify the appropriate arising and lowering operators. Working in a Landau-like gauge, we explicitly construct nonlinear coherent states as eigenstates of a generalized annihilation operator with complex eigenvalues which depends on an arbitrary function f of the number operator. In order to describe the anisotropy effects on these states, we obtain the Heisenberg uncertainty relation, the probability density, mean energy value and occupation number distribution for three different functions f . For the case in which the anisotropy is caused by uniaxial strain, we obtain that when the stress is applied along the x-axis of the material surface, the probability density for the nonlinear coherent states is smaller compared to when the material is stressed along the orthogonal axis.
AB - We construct the Barut-Girardello coherent states for charge carriers in anisotropic 2D-Dirac materials immersed in a constant homogeneous magnetic field which is orthogonal to the sample surface. For that purpose, we solve the anisotropic Dirac equation and identify the appropriate arising and lowering operators. Working in a Landau-like gauge, we explicitly construct nonlinear coherent states as eigenstates of a generalized annihilation operator with complex eigenvalues which depends on an arbitrary function f of the number operator. In order to describe the anisotropy effects on these states, we obtain the Heisenberg uncertainty relation, the probability density, mean energy value and occupation number distribution for three different functions f . For the case in which the anisotropy is caused by uniaxial strain, we obtain that when the stress is applied along the x-axis of the material surface, the probability density for the nonlinear coherent states is smaller compared to when the material is stressed along the orthogonal axis.
KW - anisotropic Dirac fermions
KW - grapheme
KW - magnetic field
KW - nonlinear coherent states
UR - http://www.scopus.com/inward/record.url?scp=85071709721&partnerID=8YFLogxK
U2 - 10.1088/1361-648X/ab2d18
DO - 10.1088/1361-648X/ab2d18
M3 - Artículo
C2 - 31242475
AN - SCOPUS:85071709721
SN - 0953-8984
VL - 31
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 43
M1 - 435702
ER -