Search Results - "Pfeiffer, L N"
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Measurement of the quantum geometric tensor and of the anomalous Hall drift
Published in Nature (London) (20-02-2020)“…Topological physics relies on the structure of the eigenstates of the Hamiltonians. The geometry of the eigenstates is encoded in the quantum geometric tensor…”
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2
Precursors to Exciton Condensation in Quantum Hall Bilayers
Published in Physical review letters (09-08-2019)“…Tunneling spectroscopy reveals evidence for interlayer electron-hole correlations in quantum Hall bilayer two-dimensional electron systems at layer separations…”
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3
Large composite fermion effective mass at filling factor 5/2
Published in Nature communications (09-11-2023)“…The 5/2 fractional quantum Hall effect in the second Landau level of extremely clean two-dimensional electron gases has attracted much attention due to its…”
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4
Two-Dimensional Mott-Hubbard Electrons in an Artificial Honeycomb Lattice
Published in Science (American Association for the Advancement of Science) (03-06-2011)“…Artificial crystal lattices can be used to tune repulsive Coulomb interactions between electrons. We trapped electrons, confined as a two-dimensional gas in a…”
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5
Spontaneous Valley Polarization of Itinerant Electrons
Published in Physical review letters (10-09-2021)“…Memory or transistor devices based on an electron's spin rather than its charge degree of freedom offer certain distinct advantages and comprise a cornerstone…”
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6
Exciton condensation and perfect Coulomb drag
Published in Nature (London) (23-08-2012)“…An electronic current flowing in one conductor can induce a drag current in another spatially separated conductor by means of Coulomb interactions; when these…”
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7
Anomalous quantized plateaus in two-dimensional electron gas with gate confinement
Published in Nature communications (30-03-2023)“…Quantum information can be coded by the topologically protected edges of fractional quantum Hall (FQH) states. Investigation on FQH edges in the hope of…”
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8
Author Correction: Large composite fermion effective mass at filling factor 5/2
Published in Nature communications (18-12-2023)Get full text
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Measurement of filling factor 5/2 quasiparticle interference with observation of charge e/4 and e/2 period oscillations
Published in Proceedings of the National Academy of Sciences - PNAS (02-06-2009)“…A standing problem in low-dimensional electron systems is the nature of the 5/2 fractional quantum Hall (FQH) state: Its elementary excitations are a focus for…”
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10
Reconstruction of Bloch wavefunctions of holes in a semiconductor
Published in Nature (London) (04-11-2021)“…A central goal of condensed-matter physics is to understand how the diverse electronic and optical properties of crystalline materials emerge from the wavelike…”
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11
Anisotropic Two-Dimensional Disordered Wigner Solid
Published in Physical review letters (15-07-2022)Get full text
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12
Thermal and Quantum Melting Phase Diagrams for a Magnetic-Field-Induced Wigner Solid
Published in Physical review letters (17-07-2020)“…A sufficiently large perpendicular magnetic field quenches the kinetic (Fermi) energy of an interacting two-dimensional (2D) system of fermions, making them…”
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13
Low-Energy Collective Oscillations and Bogoliubov Sound in an Exciton-Polariton Condensate
Published in Physical review letters (19-02-2021)“…We report the observation of low-energy, low-momenta collective oscillations of an exciton-polariton condensate in a round "box" trap. The oscillations are…”
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14
Evidence for Topological Protection Derived from Six-Flux Composite Fermions
Published in Nature communications (17-02-2024)“…The composite fermion theory opened a new chapter in understanding many-body correlations through the formation of emergent particles. The formation of…”
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15
Quantum Hall Spin Diode
Published in Physical review letters (05-05-2017)“…Double layer two-dimensional electron systems at high perpendicular magnetic field are used to realize magnetic tunnel junctions in which the electrons at the…”
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16
Correlated States of 2D Electrons near the Landau Level Filling ν=1/7
Published in Physical review letters (14-01-2022)“…The ground state of two-dimensional electron systems (2DESs) at low Landau level filling factors (ν≲1/6) has long been a topic of interest and controversy in…”
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17
Commensurability Oscillations of Composite Fermions Induced by the Periodic Potential of a Wigner Crystal
Published in Physical review letters (26-08-2016)“…When the kinetic energy of a collection of interacting two-dimensional (2D) electrons is quenched at very high magnetic fields so that the Coulomb repulsion…”
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18
Anomalous electronic transport in high-mobility Corbino rings
Published in Nature communications (03-07-2023)“…We report low-temperature electronic transport measurements performed in two multi-terminal Corbino samples formed in GaAs/Al-GaAs two-dimensional electron…”
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19
Probing the Melting of a Two-Dimensional Quantum Wigner Crystal via its Screening Efficiency
Published in Physical review letters (22-03-2019)“…One of the most fundamental and yet elusive collective phases of an interacting electron system is the quantum Wigner crystal (WC), an ordered array of…”
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20
Fractional Quantum Hall Effect Energy Gaps: Role of Electron Layer Thickness
Published in Physical review letters (30-07-2021)“…The fractional quantum Hall effect stands as a quintessential manifestation of an interacting two-dimensional electron system. One of the fractional quantum…”
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