We are delighted to presenta collection of 17 research/review articles on grapheme and grapheme analogs covering manydifferent aspects. This special issue ist he fifth in series on graphene, reflecting the continued excitement in grapheme science and more recently, in other 2D materials like MoS2 and BN. Ever since the discovery of graphene, Raman spectroscopy has played a crucial role in non-d...

We discuss effects of 1/rβ type long-range (LR) interactions in a tight-binding model by utilizing the bosonization technique, renormalization group and conformal field theory (CFT). We obtain the low energy action known for Kibble’s model which generates the mass gap in 3 dimension when β = 1, the Coulomb force case. In one dimension, the dispersion relations predict that the system remains ga...

Identifying the microscopic mechanism for superconductivity in magic-angle twisted bilayer graphene (MATBG) is an outstanding open problem. While MATBG exhibits a rich phase-diagram, driven partly by strong interactions relative to electronic bandwidth, its single-particle properties are unique and likely play important role some of phenomenological complexity. Some salient features include ban...

Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. The microscopic physics behind low-lattice thermal conductivity of single-crystal rock salt lead telluride (PbTe) i...

We develop the theory of hydrodynamics an isotropic Fermi liquid electrons coupled to acoustic phonons, assuming that umklapp processes may be neglected. At low temperatures, fluid is approximately Galilean invariant; at high nearly relativistic; intermediate there are seven additional temperature regimes with unconventional thermodynamic properties and hydrodynamic transport coefficients in a ...