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Local Quantum Criticality in the Two-dimensional Dissipative Quantum XY Model
Lijun Zhu, Yan Chen, Chandra M. Varma
We use quantum Monte-Carlo simulations to calculate the phase diagram and the correlation functions for the quantum phase transitions in the two-dimensional dissipative XY model wi…
Landau Renormalizations of Superfluid density in Heavy Fermion Superconductor CeCoIn5
Lei Shu, D. E. MacLaughlin, C. M. Varma +5
The formation of heavy fermion bands can occur by means of the conversion of a periodic array of local moments into itinerant electrons via the Kondo effect and the huge consequent…
Amplitude / Higgs Modes in Condensed Matter Physics
David Pekker, C. M. Varma
The order parameter and its variations in space and time in many different states in condensed matter physics at low temperatures are described by the complex function $Ψ({\bf r},…
Specific Heat and Sound Velocity Distinguish the Relevant Competing Phase in the Pseudogap Region of High Temperature Superconductors
Chandra M. Varma, Lijun Zhu
A great step forward towards the understanding of high temperature superconductors are the variety of experimental results which have led to the wide-spread acceptance of the idea…
Zeeman Modulated Spin Echo in Orthorhombic Symmetry
Changtao Hou, D. E. MacLaughlin, C. M. Varma
The experimental study of the modulation of the envelope of spin-echo signals due to internal and external fields is an important spectroscopic tool to detect very small internal m…