Interference of nematic quantum critical quasiparticles: a route to the octet model

Abstract

Repeated observations of inhomogeneity in cuperate superconductors[1-5] make one immediately question the existance of coherent quasiparticles(qp's) and the applicability of a momentum space picture. Yet, obversations of interference effects[6-9] suggest that the qp's maintain a remarkable coherence under special circumstances. In particular, quasi-particle interference (QPI) imaging using scanning tunneling spectroscopy revealed a highly unusual form of coherence: accumulation of coherence only at special points in momentum space with a particular energy dispersion[5-7]. Here we show that nematic quantum critical fluctuations[10], combined with the known extreme velocity anisotropy[11] provide a natural mechanism for the accumulation of coherence at those special points. Our results raise the intriguing question of whether the nematic fluctuations provide the unique mechanism for such a phenomenon.

4 pages, 3 figures

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Cited by in corpus (8)

• Lattice symmetry breaking in cuprate superconductors: Stripes, nematics, and superconductivity
• Simultaneous Transitions in Cuprate Momentum-Space Topology and Electronic Symmetry Breaking
• Heavy d-Electron Quasiparticle Interference and Real-space Electronic Structure of Sr3Ru2O7
• Suppression of superconductivity at nematic critical point in underdoped cuprates
• Cold-spots and glassy nematicity in underdoped cuprates
• Revisiting Quasiparticle Scattering Interference in High-Temperature Superconductors: The Problem of Narrow Peaks
• Competition between superconductivity and nematic order in high-$T_c$ superconductor
• Quantum criticality of fermion velocities and critical temperature nearby a putative quantum phase transition in the $d$-wave superconductors