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A Tale of Two Theories: Quantum Griffiths Effects in Metallic Systems
A. H. Castro Neto, B. A. Jones
We show that two apparently contradictory theories on the existence of Griffiths-McCoy singularities in magnetic metallic systems [1,2] are in fact mathematically equivalent. We di…
Nodal liquid and s-wave superconductivity in transition metal dichalcogenides
B. Uchoa, G. G. Cabrera, A. H. Castro Neto
We explore the physical properties of a unified microscopic theory for the coexistence of superconductivity and charge density waves in two-dimensional transition metal dichalcogen…
Renormalization Group Approach to Strong-Coupled Superconductors
S. -W. Tsai, A. H. Castro Neto, R. Shankar +1
We develop an asymptotically exact renormalization group (RG) approach that treats electron-electron and electron-phonon interactions on equal footing. The approach allows an unbia…
Excitations and Quantum Fluctuations in Site Diluted Two-Dimensional Antiferromagnets
Eduardo R. Mucciolo, A. H. Castro Neto, C. Chamon
We study the effect of site dilution and quantum fluctuations in an antiferromagnetic spin system on a square lattice within the linear spin-wave approximation. By performing numer…