output
19922026
Showing 2015 · cond-mat.str-elShow all

13 papers · 2 filters

cond-mat.str-el2015★ 62 cited

Polynomial Similarity Transformation Theory: A smooth interpolation between coupled cluster doubles and projected BCS applied to the reduced BCS Hamiltonian

Matthias Degroote, Thomas M. Henderson, Jinmo Zhao +2

We present a similarity transformation theory based on a polynomial form of a particle-hole pair excitation operator. In the weakly correlated limit, this polynomial becomes an exp…

cond-mat.str-el2015★ 10 cited

Probing Critical Surfaces in Momentum Space Using Real-Space Entanglement Entropy: Bose versus Fermi

Hsin-Hua Lai, Kun Yang

A co-dimension one critical surface in the momentum space can be either a familiar Fermi surface, which separates occupied states from empty ones in the non-interacting fermion cas…

cond-mat.str-el2015★ 10 cited

Global Phase Diagram and Momentum Distribution of Single-Particle Excitations in Kondo insulators

J. H. Pixley, Rong Yu, Silke Paschen +1

Kondo insulators are emerging as a simplified setting to study both magnetic and metal-to-insulator quantum phase transitions. Here, we study a half-filled Kondo lattice model defi…

cond-mat.str-el2015★ 19 cited

Kondo Destruction in Heavy Fermion Quantum Criticality and the Photoemission Spectrum of YbRhSi

S. Paschen, S. Friedemann, S. Wirth +3

Heavy fermion metals provide a prototype setting to study quantum criticality. Experimentally, quantum critical points have been identified and studied in a growing list of heavy f…

cond-mat.str-el2015★ 1 cited

Anomalous Hall effect and quantum criticality in geometrically frustrated heavy fermion metals

Wenxin Ding, Sarah Grefe, Silke Paschen +1

Studies on the heavy-fermion pyrochlore iridate (PrIrO) point to the role of time-reversal-symmetry breaking in geometrically frustrated Kondo lattices. With this motiv…

cond-mat.str-el2015★ 51 cited

A cluster-based mean-field and perturbative description of strongly correlated fermion systems. Application to the 1D and 2D Hubbard model

Carlos A. Jiménez-Hoyos, Gustavo E. Scuseria

We introduce a mean-field and perturbative approach, based on clusters, to describe the ground state of fermionic strongly-correlated systems. In cluster mean-field, the ground sta…

cond-mat.str-el2015★ 59 cited

Experimental Observation of Incoherent-Coherent Crossover and Orbital Dependent Band Renormalization in Iron Chalcogenide Superconductors

Zhongkai Liu, Ming Yi, Yan Zhang +13

The level of electronic correlation has been one of the key questions in understanding the nature of superconductivity. Among the iron-based superconductors, the iron chalcogenide…

cond-mat.str-el2015★ 8 cited

Two-component Bose-Hubbard model in an array of cavity polaritons

Yong-Chang Zhang, Xiang-Fa Zhou, Xingxiang Zhou +3

We propose a scheme which can realize an extended two-component Bose-Hubbard model using polaritons confined in an array of optical cavities. In addition to the density-dependent i…

cond-mat.str-el2015★ 35 cited

Three-Dimensional Crystallization of Vortex Strings in Frustrated Quantum Magnets

Zhentao Wang, Yoshitomo Kamiya, Andriy H. Nevidomskyy +1

We demonstrate that frustrated exchange interactions can produce exotic 3D crystals of vortex strings near the saturation field (H=Hsat) of body- and face-centered cubic Mott insul…

cond-mat.str-el2015★ 9 cited

Entanglement Entropy Near Kondo-Destruction Quantum Critical Points

J. H. Pixley, Tathagata Chowdhury, M. T. Miecnikowski +3

We study the impurity entanglement entropy in quantum impurity models that feature a Kondo-destruction quantum critical point (QCP) arising from a pseudogap in the conduction…

cond-mat.str-el2015★ 80 cited

Very large magnetoresistance in FeTaS single crystals

Will J. Hardy, Chih-Wei Chen, A. Marcinkova +4

Magnetic moments intercalated into layered transition metal dichalcogenides are an excellent system for investigating the rich physics associated with magnetic ordering in a strong…

cond-mat.str-el2015★ 88 cited

Fermi surface reconstruction and multiple quantum phase transitions in the antiferromagnet CeRhIn

L. Jiao, Y. Chen, Y. Kohama +15

Conventional, thermally-driven continuous phase transitions are described by universal critical behaviour that is independent of the specific microscopic details of a material. How…

cond-mat.str-el2015★ 144 cited

Antiferroquadrupolar and Ising-Nematic Orders of a Frustrated Bilinear-Biquadratic Heisenberg Model and Implications for the Magnetism of FeSe

Rong Yu, Qimiao Si

Motivated by the properties of the iron chalcogenides, we study the phase diagram of a generalized Heisenberg model with frustrated bilinear-biquadratic interactions on a square la…