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32 papers · 2 filters
Decoupling of magnetism and electric transport in single-crystal (Sr1-xAx)2IrO4 (A = Ca or Ba)
H. D. Zhao, J. Terzic, H. Zheng +5
We report a systematical structural, transport and magnetic study of Ca or Ba doped Sr2IrO4single crystals. Isoelectronically substituting Ca2+ (up to 15%) or Ba2+ (up to 4%) ion f…
Converting topological insulators into topological metals within the tetradymite family
K. -W. Chen, N. Aryal, J. Dai +14
We report the electronic band structures and concomitant Fermi surfaces for a family of exfoliable tetradymite compounds with the formula , obtained as a modificatio…
Enhancement of the effective mass at high magnetic fields in CeRhIn
L. Jiao, M. Smidman, Y. Kohama +14
The Kondo-lattice compound CeRhIn displays a field-induced Fermi surface reconstruction at T, which occurs within the antiferromagnetic state, prior to the quant…
Highly-symmetric random one-dimensional spin models
V. L. Quito, Pedro L. S. Lopes, José A. Hoyos +1
The interplay of disorder and interactions is a challenging topic of condensed matter physics, where correlations are crucial and exotic phases develop. In one spatial dimension, a…
Emergent SU(N) symmetry in disordered SO(N) spin chains
V. L. Quito, Pedro L. S. Lopes, José A. Hoyos +1
Strongly disordered spin chains invariant under the SO(N) group are shown to display random-singlet phases with emergent SU(N) symmetry without fine tuning. The phases with emergen…
Quantum Spin Liquids Unveil the Genuine Mott State
A. Pustogow, M. Bories, A. Löhle +14
The Widom line identifies the locus in the phase diagram where a supercritical gas crosses over from gas-like to a more liquid-like behavior. A similar transition exists in correla…
Interface and Phase Transition between Moore-Read and Halperin 331 Fractional Quantum Hall States: Realization of Chiral Majorana Fermion
Kun Yang
We consider an interface separating the Moore-Read state and Halperin 331 state in a half filled Landau level, which can be realized in a double quantum well system with varying in…
Critical role of electronic correlations in determining crystal structure of transition metal compounds
Nicola Lanatà, Tsung-Han Lee, Yong-Xin Yao +2
The choice that a solid system "makes" when adopting a crystal structure (stable or metastable) is ultimately governed by the interactions between electrons forming chemical bonds.…
Weak ferromagnetism and glassy state in kappa-(BEDT-TTF)2Hg(SCN)2Br
M. Hemmida, H. -A. Krug von Nidda, B. Miksch +8
Since the first observation of weak ferromagnetism in the charge-transfer salt kappa-(BEDT-TTF)2-Cu[N(CN)2]Cl [U. Welp et al., Phys. Rev. Lett. 69, 840 (1992)], no further evidence…
In-depth study of the phase diagram of Sr4Ru3O10 by magnetization experiments
F. Weickert, L. Civale, B. Maiorov +7
We present magnetization measurements on Sr4Ru3O10 as a function of temperature and magnetic field applied perpendicular to the magnetic easy -axis inside the ferromagnetic phas…
Van der Waals Schottky barriers as interface probes of the correlation between chemical potential shifts and charge density wave formation in 1T-TiSe and 2H-NbSe
Ang J. Li, Xiaochen Zhu, Daniel Rhodes +3
Layered transition metal dichalcogenide (TMD) materials, i.e. 1T-TiSe and 2H-NbSe, harbor a second order charge density wave (CDW) transition where phonons play a key role…
On the possibility to detect multipolar order in URuSi by the electric quadrupolar transition of resonant elastic X-ray scattering
Y. L. Wang, G. Fabbris, D. Meyers +9
Resonant elastic X-ray scattering is a powerful technique for measuring multipolar order parameters. In this paper, we theoretically and experimentally study the possibility of usi…
Forbidden coherent transfer observed between two realizations of quasi-harmonic spin system
S. Bertaina, G. Yue, C-E Dutoit +1
The multi-level system Mn is used to generate two pseudo-harmonic level systems, as representations of the same electronic sextuplet at different nuclear spin project…
Putative spin liquid in the triangle-based iridate BaIrTiO
W. -J. Lee, S. -H. Do, Sungwon Yoon +10
We report on thermodynamic, magnetization, and muon spin relaxation measurements of the strong spin-orbit coupled iridate BaIrTiO, which constitutes a new frustration m…
Multiple crossovers and coherent states in a Mott-Peierls insulator
O. Nájera, M. Civelli, V. Dobrosavljević +1
We consider the dimer Hubbard model within Dynamical Mean Field Theory to study the interplay and competition between Mott and Peierls physics. We describe the various metal-insula…
Electronic Landscape of Ce-based Intermetallics: CeCuSi at an Extreme
Y. Lai, S. M. Saunders, D. Graf +7
CeCuSi is an exemplary correlated electron metal that features two domes of unconventional superconductivity in its temperature-pressure phase diagram. The first dome surro…
Electronic in-plane symmetry breaking at field-tuned quantum criticality in CeRhIn5
F. Ronning, T. Helm, K. Shirer +9
Electronic nematics are exotic states of matter where electronic interactions break a rotational symmetry of the underlying lattice, in analogy to the directional alignment without…
Weak antilocalization effect due to topological surface states in BiSeTe
K. Shrestha, D. Graf, V. Marinova +2
We have investigated the weak antilocalization (WAL) effect in the p-type BiSeTe topological system. The magnetoconductance shows a cusp-like feature at low mag…
Topological Quantum Phase Transition from Fermionic Integer Quantum Hall Phase to Bosonic Fractional Quantum Hall Phase through P-Wave Feshbach Resonance
Shiuan-Fan Liou, Zi-Xiang Hu, Kun Yang
We use exact diagonalization to study the quantum phases and phase transitions when a single species of fermionic atoms at Landau level filling factor in a rotating trap…
Scale-invariant magnetoresistance in a cuprate superconductor
P. Giraldo-Gallo, J. A. Galvis, Z. Stegen +14
The anomalous metallic state in high-temperature superconducting cuprates is masked by the onset of superconductivity near a quantum critical point. Use of high magnetic fields to…
Robust pinning of magnetic moments in pyrochlore iridates
W. C. Yang, W. K. Zhu, H. D. Zhou +6
Pyrochlore iridates A2Ir2O7 (A = rare earth elements, Y or Bi) hold great promise for realizing novel electronic and magnetic states owing to the interplay of spin-orbit coupling,…
Global phase diagram and quantum spin liquids in spin-1/2 triangular antiferromagnet
Shou-Shu Gong, W. Zhu, J. -X. Zhu +2
We study the spin- Heisenberg model on the triangular lattice with the nearest-neighbor , the next-nearest-neighobr Heisenberg interactions, and the additio…
Coulomb interaction driven instabilities of sliding Luttinger liquids
Shouvik Sur, Kun Yang
We study systems made of periodic arrays of one dimensional quantum wires, coupled by Coulomb interaction. Using bosonization an interacting metallic fixed point is obtained, which…
Extremely large non-saturating magnetoresistance and ultrahigh mobility due to topological surface states in metallic Bi2Te3 topological insulator
K. Shrestha, M. Chou, D. Graf +3
Weak antilocalization (WAL) effects in Bi2Te3 single crystals have been investigated at high and low bulk charge carrier concentrations. At low charge carrier density the WAL curve…