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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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36 papers · 2 filters
Magnetoresistance near a quantum critical point
I. M. Hayes, Nicholas P. Breznay, Toni Helm +5
In metals near a quantum critical point, the electrical resistance is thought to be determined by the lifetime of the carriers of current, rather than the scattering from defects.…
Chemical pressure tuning of URuSi via isoelectronic substitution of Ru with Fe
Pinaki Das, N. Kanchanavatee, J. S. Helton +8
We have used specific heat and neutron diffraction measurements on single crystals of URuFeSi for Fe concentrations 0.7 to establish that chemical substi…
Dimerization-Induced Fermi-Surface Reconstruction in IrTe2
Man Jin Eom, Kyoo Kim, Y. J. Jo +6
We report a de Haas-van Alphen (dHvA) oscillation study on IrTe2 single crystals showing complex dimer formations. By comparing the angle dependence of dHvA oscillations with band…
Bad-metal behavior reveals Mott quantum criticality in doped Hubbard models
J. Vucicevic, D. Tanaskovic, M. Rozenberg +1
Bad-Metal (BM) behavior featuring linear temperature dependence of the resistivity extending to well above the Mott-Ioffe-Regel (MIR) limit is often viewed as one of the key unreso…
Effect of Single Impurity on Free Fermion Entanglement Entropy
Mohammad Pouranvari, Kun Yang, Alexander Seidel
The one-dimensional free Fermi gas is a prototype conformally invariant system, whose entanglement properties are well-understood. In this work, the effects of a single impurity on…
Glassy dynamics in geometrically frustrated Coulomb liquids without disorder
Samiyeh Mahmoudian, Louk Rademaker, Arnaud Ralko +2
We show that introducing long-range Coulomb interactions immediately lifts the massive ground state degeneracy induced by geometric frustration for electrons on quarter-filled tria…
Non-Fermi-Liquid Behavior in Metallic Quasicrystals with Local Magnetic Moments
Eric C. Andrade, Anuradha Jagannathan, Eduardo Miranda +2
Motivated by the intrinsic non-Fermi-liquid behavior observed in the heavy-fermion quasicrystal $\mbox{Au}_{51}\mbox{Al}_{34}\mbox{Yb}_{15}$, we study the low-temperature behavior…
Strong-disorder renormalization group study of the Anderson localization transition in three and higher dimensions
Hossein Javan Mard, Jose A. Hoyos, Eduardo Miranda +1
We implement an efficient strong-disorder renormalization-group (SDRG) procedure to study disordered tight-binding models in any dimension and on the Erdos-Renyi random graphs, whi…
Quantum criticality at the Anderson transition: a TMT perspective
Samiyeh Mahmoudian, Shao Tang, Vladimir Dobrosavljević
We present a complete analytical and numerical solution of the Typical Medium Theory (TMT) for the Anderson metal-insulator transition. In this theory, we self-consistently calcula…
Spin dynamics and disorder effects in the S=1/2 kagome Heisenberg spin liquid phase of kapellasite
E. Kermarrec, A. Zorko, F. Bert +10
We report Cl NMR, ESR, SR and specific heat measurements on the frustrated kagomé magnet kapellasite, CuZn(OH)Cl, where a gapless spin liquid phas…
Non-Fermi Liquid Behavior Close to a Quantum Critical Point in a Ferromagnetic State without Local Moments
E. Svanidze, L. Liu, B. Frandsen +12
A quantum critical point (QCP) occurs upon chemical doping of the weak itinerant ferromagnet Sc_{3.1}In. Remarkable for a system with no local moments, the QCP is accompanied by no…
Short-ranged interaction effects on topological phase transitions: The perturbative mean-field method
Hsin-Hua Lai, Hsiang-Hsuan Hung
Time-reversal symmetric topological insulator is a novel state of matter that a bulk-insulating state carries dissipationless spin transport along the surfaces, embedded by the $Z_…
Optoelectronic excitations and photovoltaic effect in strongly correlated materials
John E. Coulter, Efstratios Manousakis, Adam Gali
Solar cells based on conventional semiconductors have low efficiency in converting solar energy into electricity because the excess energy beyond the gap of an incident solar photo…
CeCu_2Ge_2: Challenging our Understanding of Quantum Criticality
B. Zeng, Q. R. Zhang, D. Rhodes +6
Here, we unveil evidence for a quantum phase-transition in CeCu_2Ge_2 which displays both an incommensurate spin-density wave (SDW) ground-state, and a strong renormalization of th…
Magnetoelectric coupling tuned by competing anisotropies in MnNiTiO
Songxue Chi, Feng Ye, H. D. Zhou +4
A flop of electric polarization from () to () is observed in MnTiO as a spin flop transition is triggered by a -axis magnetic f…
Successive spin-flop transitions of Neel-type antiferromagnet LiMnO single crystal with honeycomb-lattice
K. Balamurugan, Sang-Hyun Lee, Jun-Sung Kim +7
We have carried out high magnetic field studies of single-crystalline LiMnO, a honeycomb lattice antiferromagnet. Its magnetic phase diagram was mapped out using magnetizat…
Novel Itinerant Antiferromagnet TiAu
E. Svanidze, Jiakui K. Wang, T. Besara +10
Itinerant and local moment magnetism have substantively different origins, and require distinct theoretical treatment. A unified theory of magnetism has long been sought after, and…
Convergence of quasiparticle self-consistent GW calculations of transition metal monoxides
Suvadip Das, John E. Coulter, Efstratios Manousakis
Finding an accurate ab initio approach for calculating the electronic properties of transition metal oxides has been a problem for several decades. In this paper, we investigate th…
Complex magnetism and strong electronic correlations in Ce2PdGe3
R. E. Baumbach, A. Gallagher, T. Besara +6
Single crystal x-ray diffraction, magnetic susceptibility, heat capacity, and electrical resistivity measurements are reported for the new tetragonal compound CePdGe, w…
Entanglement Area Law in Disordered Free Fermion Anderson Model in One, Two, and Three Dimensions
Mohammad Pouranvari, Yuhui Zhang, Kun Yang
We calculate numerically the entanglement entropy of free fermion ground states in one-, two- and three-dimensional Anderson models, and find that it obeys the area law as long as…
Resolution of the discrepancy between the variation of the physical properties of Ce1-xYbxCoIn5 single crystals and thin films with Yb composition
S. Jang, B. D. White, I. K. Lum +10
Measurements of physical properties show that Yb enters the single crystals systematically and in registry with the nominal Yb concentration x of the starting material dissolved in…
Short-ranged interaction effects on topological phase transitions
Hsin-Hua Lai, Hsiang-Hsuan Hung, Gregory A. Fiete
Using a combined perturbative and self-consistent mean-field approach that we directly compare with quantum Monte Carlo calculations, we study the effects of short-ranged interacti…
Existence of strong-pairing quantum Hall phase in bilayer cold atom systems with dipolar interactions
Yuhui Zhang, E. H. Rezayi, Kun Yang
We study bilayer fermionic cold atom systems with dipolar interactions, as well as a two-component tunable pseudopotential (TCTP) model which keeps only the zeroth and first Haldan…
Ground state and magnetic phase transitions of orthoferrite DyFeO_3
Z. Y. Zhao, X. Zhao, H. D. Zhou +5
Low-temperature thermal conductivity (κ), as well as magnetization (M) and electric polarization (P), of multiferroic orthoferrite DyFeO_3 single crystals are studied with H \paral…