Showing 2009 · cond-mat.str-elShow all

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cond-mat.str-el2009★ 3 cited

String-nets, single and double-stranded quantum loop gases for non-Abelian anyons

Andrea Velenich, Claudio Chamon, Xiao-Gang Wen

String-net condensation can give rise to non-Abelian anyons whereas loop condensation usually gives rise to Abelian anyons. It has been proposed that generalized quantum loop gases…

cond-mat.str-el2009★ 2 cited

Investigation of the Structural and Dynamical Properties of the (001) Surface of LiCu2O2

Yangyang Yao, Xuetao Zhu, H. C. Hsu +2

We report on studies of the structure and dynamics of the (001)surface of single crystal LiCu2O2, investigated by He beam scattering at room temperature, and with lattice dynamical…

cond-mat.str-el2009★ 32 cited

Nature of the low-energy excitations of two-dimensional diluted Heisenberg quantum antiferromagnets

Ling Wang, Anders W. Sandvik

We present several different calculations pertaining to the nature of the low-energy excitations of the site-diluted S=1/2 Heisenberg antiferromagnet, in particular at the percolat…

cond-mat.str-el2009★ 197 cited

Masses in graphene-like two-dimensional electronic systems: topological defects in order parameters and their fractional exchange statistics

Shinsei Ryu, Christopher Mudry, Chang-Yu Hou +1

We classify all possible 36 gap-opening instabilities in graphene-like structures in two dimensions, i.e., masses of Dirac Hamiltonian when the spin, valley, and superconducting ch…

cond-mat.str-el2009★ 219 cited

Antiferromagnetic to valence-bond-soild transitions in two-dimensional SU(N) Heisenberg models with multi-spin interactions

J. Lou, A. W. Sandvik, N. Kawashima

We study two-dimensional Heisenberg antiferromagnets with additional multi-spin interactions which can drive the system into a valence-bond solid state. For standard SU(2) spins, w…

cond-mat.str-el2009★ 98 cited

Theory of Scanning Tunneling Spectroscopy of Magnetic Adatoms in Graphene

Bruno Uchoa, Ling Yang, S. -W. Tsai +2

We examine theoretically the signatures of magnetic adatoms in graphene probed by scanning tunneling spectroscopy (STS). When the adatom hybridizes equally with the two graphene su…

cond-mat.str-el2009★ 39 cited

Magnetism and magnetotransport in disordered graphene

T. G. Rappoport, Bruno Uchoa, A. H. Castro Neto

We perform Monte Carlo simulations to study the interplay of structural and magnetic order in single layer graphene covered with magnetic adatoms. We propose that the presence of r…

cond-mat.str-el2009★ 22 cited

Plaquette Renormalization Scheme for Tensor Network States

Ling Wang, Ying-Jer Kao, Anders W. Sandvik

We present a method for contracting a square-lattice tensor network in two dimensions, based on auxiliary tensors accomplishing successive truncations (renormalization) of 8-index…