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Article
Anisotropy Stabilized Magnetic Phases of the Triangular Antiferromagnet RbFe(MoO4)2
The magnetic H–T phase diagram of a quasi-two-dimensional easy plane antiferromagnet RbFe(MoO4)2 (S = 5/2) with an equilateral triangular lattice structure is studied with 87Rb NMR technique for field directed al...
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Article
Open AccessDichotomy in temporal and thermal spin correlations observed in the breathing pyrochlore LiGa1−xInxCr4O8
A breathing pyrochlore system is predicted to host a variety of quantum spin liquids. Despite tremendous experimental and theoretical efforts, such sought-after states remain elusive as perturbation terms and ...
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Article
Open AccessEnhanced stability of quantum Hall skyrmions under radio-frequency radiations
We present in this paper the results from a recent study on the stability of the quantum Hall skyrmions state at a Landau level filling factor (ν) close to ν = 1 in a narrow GaAs quantum well. Consistent with ...
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Article
Open AccessCharge-density-wave order takes over antiferromagnetism in Bi2Sr2−x La x CuO6 superconductors
Superconductivity appears in the cuprates when a spin order is destroyed, while the role of charge is less known. Recently, charge density wave (CDW) was found below the superconducting dome in YBa2Cu3O ...
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Article
Open AccessMagnetism and local symmetry breaking in a Mott insulator with strong spin orbit interactions
Study of the combined effects of strong electronic correlations with spin-orbit coupling (SOC) represents a central issue in quantum materials research. Predicting emergent properties represents a huge theoret...
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Article
Magnetic structure and domain conversion of the quasi-2D frustrated antiferromagnet CuCrO2 probed by NMR
We have carried out 63,65Cu NMR spectra measurements in a magnetic field up to about 15.5 T on a single crystal of the multiferroic triangular-lattice antiferromagnet CuCrO2. The measurements were performed for p...
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Article
Synthesis and Characterization of BaFe2As2 Single Crystals Grown by In-flux Technique
We report a detailed characterization of BaFe2As2 single crystals grown by a metallic In-flux technique, an alternative to well-established growth routes using FeAs self- or Sn-flux. Electrical resistivity, magne...
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Article
Pseudogap Ground State and Its Do** Evolution in Bi2Sr2−x La x CuO6+δ : Removing the Superconducting State by the Application of Very High Magnetic Fields
We present results for the pseudogap ground state and its do** evolution in single-layered copper-oxide Bi2Sr2−x La x CuO6+δ . We apply very hig...
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Article
Charge-induced vortex lattice instability
If vortex cores within a superconductor can trap electrostatic charge, the cores will experience a repulsive Coulomb interaction. Evidence from NMR measurements indeed suggests that above some threshold magnet...
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Article
Two-dimensional vortices in superconductors
Superconductors have two key characteristics: they expel magnetic field and they conduct electrical current with zero resistance. However, both properties are compromised in high magnetic fields, which can pen...
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Article
Interplay between the magnetic fluctuations and superconductivity in lanthanum cuprates
We report an analysis of the magnetic fluctuations in superconducting La2−x SrxCuO4 and related lanthanum cuprates that have different symmetry of the low-temperature structure. NMR and ESR investigations reveale...
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Article
Spatially resolved electronic structure inside and outside the vortex cores of a high-temperature superconductor
Puzzling aspects of high-transition-temperature (high-Tc) superconductors include the prevalence of magnetism in the normal state and the persistence of superconductivity in high magnetic fields. Superconductivit...
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Chapter and Conference Paper
Microscopic Study of Local Structure and Charge Distribution in Metallic La2CuO4+δ
We employ NMR and NQR spectroscopy as probes of local structure and charge environments in metallic La2CuO4+δ (Tc = 38 K). We discuss the effect of annealing the sample at various temperatures T ...
