TY - JOUR

T1 - Optical manifestations of symmetry breaking in bilayer graphene

AU - Abergel, D. S. L.

AU - Falko, Vladimir

N1 - ©2012 American Physical Society

PY - 2012/7/31

Y1 - 2012/7/31

N2 - We propose a spectroscopic method of identifying broken symmetry states of bilayer graphene. We demonstrate theoretically that, in contrast to gapped states, a strained bilayer crystal or nematic phase of the electronic liquid are distinguishable by the dependence of the line shape of absorption on the polarization of the light. This property is characteristic for both the infrared and far-infrared spectral ranges, which correspond to the absorption by transitions between low-energy bands and split bands, and transitions between the low-energy valence and conduction bands, respectively.

AB - We propose a spectroscopic method of identifying broken symmetry states of bilayer graphene. We demonstrate theoretically that, in contrast to gapped states, a strained bilayer crystal or nematic phase of the electronic liquid are distinguishable by the dependence of the line shape of absorption on the polarization of the light. This property is characteristic for both the infrared and far-infrared spectral ranges, which correspond to the absorption by transitions between low-energy bands and split bands, and transitions between the low-energy valence and conduction bands, respectively.

U2 - 10.1103/PhysRevB.86.041410

DO - 10.1103/PhysRevB.86.041410

M3 - Journal article

VL - 86

JO - Physical review B

JF - Physical review B

SN - 1098-0121

IS - 4

M1 - 041410

ER -