Search Results - "Hallas, A. M"
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Quantum Critical Point in the Itinerant Ferromagnet Ni1−xRhx
Published in Physical review letters (20-03-2020)“…We report a chemical substitution-induced ferromagnetic quantum critical point in polycrystalline Ni1−xRhx alloys. Through magnetization and muon spin…”
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Dynamical ground state in the XY pyrochlore Yb2GaSbO7
Published in npj quantum materials (05-05-2021)“…The magnetic ground state of the pyrochlore Yb 2 GaSbO 7 has not been established. The persistent spin fluctuations observed by muon spin-relaxation…”
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3
Anomalous Metamagnetism in the Low Carrier Density Kondo Lattice YbRh 3 Si 7
Published in Physical review. X (13-12-2018)“…We report complex metamagnetic transitions in single crystals of the new low carrier Kondo antiferromagnet . Electrical transport, magnetization, and specific…”
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4
Successive phase transitions and extended spin-excitation continuum in the S=1/2 triangular-lattice antiferromagnet Ba3CoSb2O9
Published in Physical review letters (28-12-2012)“…Using magnetic, thermal, and neutron measurements on single-crystal samples, we show that Ba3CoSb2O9 is a spin-1/2 triangular-lattice antiferromagnet with the…”
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5
Magnetic frustration in lead pyrochlores
Published in Physical review. B, Condensed matter and materials physics (19-03-2015)“…The rich phase diagrams of magnetically frustrated pyrochlores have maintained a high level of interest over the past 20 years. To experimentally explore these…”
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Chemical pressure effects on pyrochlore spin ice
Published in Physical review letters (18-05-2012)“…A comparison among the two sets of studied pyrochlore spin ices, Ho2Sn2O7, Ho2Ti2O7, and Ho2Ge2O7 with Ho3+ spins and Dy2Sn2O7, Dy2Ti2O7, and Dy2Ge2O7 with…”
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7
Quantum Critical Point in the Itinerant Ferromagnet Ni 1 − x Rh x
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Incipient ferromagnetism in Tb2Ge2O7: application of chemical pressure to the enigmatic spin-liquid compound Tb2Ti2O7
Published in Physical review letters (31-12-2014)“…After nearly 20 years of study, the origin of the spin-liquid state in Tb2Ti2O7 remains a challenge for experimentalists and theorists alike. To improve our…”
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9
Frustration under pressure: Exotic magnetism in new pyrochlore oxides
Published in APL materials (01-04-2015)“…Pyrochlore structures, of chemical formula A2B2O7 (A and B are typically trivalent and tetravalent ions, respectively), have been the focus of much activity in…”
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10
Anomalous Metamagnetism in the Low Carrier Density Kondo Lattice YbRh3Si7
Published in Physical review. X (13-12-2018)“…We report complex metamagnetic transitions in single crystals of the new low carrier Kondo antiferromagnetYbRh3Si7. Electrical transport, magnetization, and…”
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11
Incipient Ferromagnetism in Tb 2 Ge 2 O 7 : Application of Chemical Pressure to the Enigmatic Spin-Liquid Compound Tb 2 Ti 2 O 7
Published in Physical review letters (31-12-2014)Get full text
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12
Pb3TeCo3V2O14: A Potential Multiferroic Co Bearing Member of the Dugganite Series
Published in Chemistry of materials (28-02-2012)“…Polycrystalline Pb3TeCo3V2O14, a structural analogue of the multiferroic Ba3NbFe3Si2O14, was synthesized and characterized using X-ray diffraction, magnetic…”
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13
Neutron scattering study of the kagome metal Sc3Mn3Al7Si5
Published 05-10-2021“…Sc3Mn3Al7Si5 is a rare example of a correlated metal in which the Mn moments form a kagome lattice. The absence of magnetic ordering to the lowest temperatures…”
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14
Effect of Chemical Pressure on the Crystal Electric Field States of Erbium Pyrochlore Magnets
Published 04-08-2017“…Phys. Rev. B 97, 024415 (2018) We have carried out a systematic study of the crystal electric field excitations in the family of cubic pyrochlores…”
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15
Probing the quantum phase transition in Mott insulator BaCoS_2 tuned by pressure and Ni-substitution
Published 23-01-2019“…Phys. Rev. Materials 3, 045001 (2019) We present a muon spin relaxation study of the Mott transition in BaCoS_2 using two independent control parameters: (i)…”
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16
Low-carrier density and fragile magnetism in a Kondo lattice system
Published 20-08-2018“…Phys. Rev. B 99, 085120 (2019) Kondo-based semimetals and semiconductors are of extensive current interest as a viable platform for strongly correlated states…”
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17
Phase Competition in the Palmer-Chalker X Y Pyrochlore Er 2 Pt 2 O 7
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18
Volume-wise destruction of the antiferromagnetic Mott insulating state through quantum tuning
Published in Nature communications (17-08-2016)“…RENiO 3 (RE=rare-earth element) and V 2 O 3 are archetypal Mott insulator systems. When tuned by chemical substitution (RENiO 3 ) or pressure (V 2 O 3 ), they…”
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Anomalous metamagnetism in the low carrier density Kondo lattice YbRh3Si7
Published 17-05-2018“…Phys. Rev. X 8, 041047 (2018) We report complex metamagnetic transitions in single crystals of the new low carrier Kondo antiferromagnet YbRh3Si7. Electrical…”
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20
Sub-Kelvin magnetic order in Sm sub(3)Ga sub(5)O sub(12) single crystal
Published in Journal of magnetism and magnetic materials (05-06-2015)“…The garnets remain one of the most studied classes of materials due to their technological applications. While many studies have focused on the low temperature…”
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