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Nonequilibrium quantum criticality in open electronic systems
Aditi Mitra, So Takei, Yong Baek Kim +1
A theory is presented of quantum criticality in open (coupled to reservoirs) itinerant electron magnets, with nonequilibrium drive provided by current flow across the system. Both…
Hybridization expansion impurity solver: General formulation and application to Kondo lattice and two-orbital models
Philipp Werner, Andrew J. Millis
A recently developed continuous time solver based on an expansion in hybridization about an exactly solved local limit is reformulated in a manner appropriate for general classes o…
Fictive Impurity Approach to Dynamical Mean Field Theory: a Strong-Coupling Investigation
Andreas Fuhrmann, Satoshi Okamoto, Hartmut Monien +1
Quantum Monte Carlo and semiclassical methods are used to solve two and four site cluster dynamical mean field approximations to the square lattice Hubbard model at half filling an…
Nonanalytic corrections to the specific heat and susceptibility of a non-Galilean-Invariant Two-Dimensional Fermi Liquid
Andrey V. Chubukov, Andrew J. Millis
We consider the leading non-analytic temperature dependence of the specific heat and temperature and momentum dependence of the spin susceptibility for two dimensional fermionic sy…
Interference as a Probe of Spin Incoherence in Strongly Interacting Quantum Wires
M. Kindermann, P. W. Brouwer, A. J. Millis
We show that interference experiments can be used to identify the spin-incoherent regime of strongly interacting one-dimensional conductors. Two qualitative signatures of spin-inco…
Photoemission from buried interfaces in SrTiO3/LaTiO3 superlattices
M. Takizawa, H. Wadati, K. Tanaka +14
We have measured photoemission spectra of SrTiO3/LaTiO3 superlattices with a topmost SrTiO3 layer of variable thickness. Finite coherent spectral weight with a clear Fermi cut-off…