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Showing 2014 · cond-mat.str-elShow all

36 papers · 2 filters

cond-mat.str-el2014★ 15 cited

All spin-1 topological phases in a single spin-2 chain

Augustine Kshetrimayum, Hong-Hao Tu, Roman Orus

Here we study the emergence of different Symmetry-Protected Topological (SPT) phases in a spin-2 quantum chain. We consider a Heisenberg-like model with bilinear, biquadratic, bicu…

cond-mat.str-el2014★ 61 cited

Chiral projected entangled-pair state with topological order

Shuo Yang, Thorsten B. Wahl, Hong-Hao Tu +2

We show that projected entangled-pair states (PEPS) can describe chiral topologically ordered phases. For that, we construct a simple PEPS for spin-1/2 particles in a two-dimension…

cond-mat.str-el2014★ 216 cited

Anisotropic Ru3+ 4d5 magnetism in the alpha-RuCl3 honeycomb system: susceptibility, specific heat and Zero field NMR

M. Majumder, M. Schmidt, H. Rosner +3

Hexagonal alpha-Ru trichloride single crystals exhibit a strong magnetic anisotropy and we show that upon applying fields up to 14 T in the honeycomb plane the successive magnetic…

cond-mat.str-el2014★ 29 cited

Coexistence of excited polarons and metastable delocalized states in photo-induced metals

Sharareh Sayyad, Martin Eckstein

We study how polaronic states form as a function of time due to strong electron-phonon coupling, starting from a hot electron distribution which is representative of a photo-induce…

cond-mat.str-el2014★ 32 cited

Antiferromagnetic Heisenberg Model on the Icosahedron: Influence of Connectivity and the Transition from the Classical to the Quantum Limit

N. P. Konstantinidis

The antiferromagnetic Heisenberg model on the icosahedron, which consists of 20 edge-sharing triangles and belongs to the icosahedral symmetry group, presents unconventional…

cond-mat.str-el2014★ 7 cited

Effective Field Theory for a p-wave Superconductor in the Subgap Regime

Thors Hans Hansson, Thomas Kvorning, V. Parameswaran Nair +1

We construct an effective field theory for the 2d spineless p-wave paired superconductor that faithfully describes the topological properties of the bulk state, and also provides a…

cond-mat.str-el2014★ 9 cited

Absence of orthogonality catastrophe after a spatially inhomogeneous interaction quench in Luttinger liquids

Balázs Dóra, Frank Pollmann

We investigate the Loschmidt echo, the overlap of the initial and final wavefunctions of Luttinger liquids after a spatially inhomogeneous interaction quench. In studying the Lutti…

cond-mat.str-el2014★ 159 cited

Infinite density matrix renormalization group for multicomponent quantum Hall systems

Michael P. Zaletel, Roger S. K. Mong, Frank Pollmann +1

While the simplest quantum Hall plateaus, such as the state in GaAs, can be conveniently analyzed by assuming only a single active Landau level participates, for many phas…

cond-mat.str-el2014★ 26 cited

Real-time dynamics in the one-dimensional Hubbard model

Luis Seabra, Fabian H. L. Essler, Frank Pollmann +2

We consider single-particle properties in the one-dimensional repulsive Hubbard model at commensurate fillings in the metallic phase. We determine the real-time evolution of the re…

cond-mat.str-el2014★ 90 cited

Verwey transition in FeO thin films: Influence of oxygen stoichiometry and substrate-induced microstructure

X. H. Liu, A. D. Rata, C. F. Chang +2

We have carried out a systematic experimental investigation to address the question why thin films of FeO (magnetite) generally have a very broad Verwey transition with low…

cond-mat.str-el2014★ 49 cited

Competing exchange interactions on the verge of a metal-insulator transition in the two-dimensional spiral magnet SrFeO

J. -H. Kim, Anil Jain, M. Reehuis +12

We report a neutron scattering study of the magnetic order and dynamics of the bilayer perovskite SrFeO, which exhibits a temperature-driven metal-insulator transition…

cond-mat.str-el2014★ 8 cited

Projective symmetry of partons in Kitaev's honeycomb model

Paula Mellado, Olga Petrova, Oleg Tchernyshyov

Low-energy states of quantum spin liquids are thought to involve partons living in a gauge-field background. We study the spectrum of Majorana fermions of Kitaev's honeycomb model…

cond-mat.str-el2014★ 18 cited

Quantitative study of valence and configuration interaction parameters of the Kondo semiconductors CeM2Al10 (M = Ru, Os and Fe) by means of bulk-sensitive hard x-ray photoelectron spectroscopy

F. Strigari, M. Sundermann, Y. Muro +9

The occupancy of the 4f^n contributions in the Kondo semiconductors CeM2Al10(M = Ru, Os and Fe) has been quantitatively determined by means of bulk-sensitive hard x-ray photoelectr…

cond-mat.str-el2014★ 34 cited

Anyon braiding in semi-analytical fractional quantum Hall lattice models

Anne E. B. Nielsen

It has been demonstrated numerically, mainly by considering ground state properties, that fractional quantum Hall physics can appear in lattice systems, but it is very difficult to…

cond-mat.str-el2014★ 14 cited

Resonant Charge Relaxation as a Likely Source of the Enhanced Thermopower in FeSi

Peijie Sun, Beipei Wei, Dirk Menzel +1

The enhanced thermopower of the correlated semiconductor FeSi is found to be robust against the sign of the relevant charge carriers. At \,\,70 K, the position of both…

cond-mat.str-el2014★ 148 cited

Excitonic quasiparticles in a spin-orbit Mott insulator

Jungho Kim, M. Daghofer, A. H. Said +4

In condensed matter systems, out of a large number of interacting degrees of freedom emerge weakly coupled particles, in terms of which most physical properties are described. For…

cond-mat.str-el2014★ 81 cited

Topology and Interactions in a Frustrated Slab: Tuning from Weyl Semimetals to C > 1 Fractional Chern Insulators

E. J. Bergholtz, Zhao Liu, M. Trescher +2

We show that, quite generically, a [111] slab of spin-orbit coupled pyrochlore lattice exhibits surface states whose constant energy curves take the shape of Fermi arcs, localized…

cond-mat.str-el2014★ 24 cited

Double Semion Phase in an Exactly Solvable Quantum Dimer Model on the Kagome Lattice

Oliver Buerschaper, Siddhardh C. Morampudi, Frank Pollmann

Quantum dimer models typically arise in various low energy theories like those of frustrated antiferromagnets. We introduce a quantum dimer model on the kagome lattice which stabil…

cond-mat.str-el2014★ 36 cited

Commensurate and Incommensurate States of Topological Quantum Matter

Ashley Milsted, Emilio Cobanera, Michele Burrello +1

We prove numerically and by dualities the existence of modulated, commensurate and incommensurate states of topological quantum matter in simple systems of parafermions, motivated…

cond-mat.str-el2014★ 19 cited

Element-Specific Depth Profile of Magnetism and Stoichiometry at the La0.67Sr0.33MnO3/BiFeO3 Interface

J. Bertinshaw, S. Brück, D. Lott +14

Depth-sensitive magnetic, structural and chemical characterization is important in the understanding and optimization of novel physical phenomena emerging at interfaces of transiti…

cond-mat.str-el2014★ 242 cited

Ultrafast and reversible control of the exchange interaction in Mott insulators

J. H. Mentink, K. Balzer, M. Eckstein

The strongest interaction between microscopic spins in magnetic materials is the exchange interaction . Therefore, ultrafast control of holds the promise…

cond-mat.str-el2014★ 18 cited

Variational Monte Carlo simulations using tensor-product projected states

Olga Sikora, Hsueh-Wen Chang, Chung-Pin Chou +2

We propose an efficient numerical method, which combines the advantages of recently developed tensor-network based methods and standard trial wave functions, to study the ground st…

cond-mat.str-el2014★ 53 cited

Criticality in Translation-Invariant Parafermion Chains

Wei Li, Shuo Yang, Hong-Hao Tu +1

In this work we numerically study critical phases in translation-invariant parafermion chains with both nearest- and next-nearest-neighbor hopping terms. The model c…

cond-mat.str-el2014★ 19 cited

Entanglement Spectrum and Entanglement Hamiltonian of a Chern insulator with open boundaries

Maria Hermanns, Yann Salimi, Masudul Haque +1

We study the entanglement spectrum of a Chern insulator on a cylinder geometry, with the cut separating the two partitions taken parallel to the cylinder edge, at varying distances…