92 citations · 292 across the 14 of their papers we have counts for
5 papers · 1 filter
Collective Modes in the Loop Ordered Phase of Cuprates
Yan He, C. M. Varma
We show that the two branches of collective modes discovered recently in under-doped Cuprates with huge spectral weight are a necessary consequence of the loop-current state. Such…
Topological Excitations near the Local Critical Point in the Dissipative 2D XY model
Vivek Aji, C. M. Varma
The dissipative XY model in two spatial dimensions belongs to a new universality class of quantum critical phenomena with the remarkable property of the decoupling of the critical…
A comprehensive study of electric, thermoelectric and thermal conductivities of Graphene with short range unitary and charged impurities
Vincent Ugarte, Vivek Aji, C. M. Varma
Motivated by the experimental measurement of electrical and hall conductivity, thermopower and Nernst effect, we calculate the longitudinal and transverse electrical and heat trans…
Violation of Onsager Reciprocity in Underdoped Cuprates ?
C. M. Varma, Victor M. Yakovenko, A. Kapitulnik
One of the canons of condensed matter physics is the Onsager Reciprocity principle in systems in which the Hamiltonian commutes with the time-reversal operator. Recent results of m…
Negative Thermal Expansion and Some Elastic properties of a Class of Solids
Yan He, Vladimir Cvetkovic, C. M. Varma
We consider the thermal expansion, change of sound velocity with pressure and temperature, and the Poisson ratio of lattices which have rigid units (polyhedra very large stiffness…