Uncertainty principle for experimental measurements: Fast versus slow probes

Abstract

The result of a physical measurement depends on the timescale of the experimental probe. In solid-state systems, this simple quantum mechanical principle has far-reaching consequences: the interplay of several degrees of freedom close to charge, spin or orbital instabilities combined with the disparity of the time scales associated to their fluctuations can lead to seemingly contradictory experimental findings. A particularly striking example is provided by systems of adatoms adsorbed on semiconductor surfaces where different experiments -- angle-resolved photoemission, scanning tunneling microscopy and core-level spectroscopy -- suggest different ordering phenomena. Using most recent first principles many-body techniques, we resolve this puzzle by invoking the time scales of fluctuations when approaching the different instabilities. These findings suggest a re-interpretation of ordering phenomena and their fluctuations in a wide class of solid-state systems ranging from organic materials to high-temperature superconducting cuprates.

12 pages, 4 figures

References in corpus (12)

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Cited by in corpus (15)

• Diagrammatic routes to nonlocal correlations beyond dynamical mean field theory
• Coulomb Correlations in 4d and 5d Oxides from First Principles - or How Spin-Orbit Materials choose their Effective Orbital Degeneracies
• Influence of Fock exchange in combined many-body perturbation and dynamical mean field theory
• Triangular Spin-Orbit-Coupled Lattice with Strong Coulomb Correlations: Sn Atoms on a SiC(0001) Substrate
• Renormalization of effective interactions in a negative charge-transfer insulator
• Hubbard interactions in iron-based pnictides and chalcogenides: Slater parametrization, screening channels and frequency dependence
• Spin-orbit coupling and magnetic interactions in Si(111):{C,Si,Sn,Pb}
• Chiral d-wave Superconductivity in a Triangular Surface Lattice Mediated by Long-range Interaction
• Doping-dependent charge- and spin-density wave orderings in a monolayer of Pb adatoms on Si(111)
• Phonon-induced electronic relaxation in a strongly correlated system: the Sn/Si(111) $(\sqrt{3}\times \sqrt{3})$ adlayer revisited
• Thermal algebraic-decay charge liquid driven by competing short-range Coulomb repulsion
• Real-Space Switching of Local Moments Driven by Quantum Geometry in Correlated Graphene Heterostructures
• The electronic structure of a doped Mott-Hubbard surface
• Fluctuating magnetism of Co- and Cu-doped NaFeAs
• Engineering correlated Dirac fermions and flat bands on SiC with transition-metal adatom lattices