72 citations · 209 across the 13 of their papers we have counts for
14 papers
Quantization through dissipation: impurity states and the optical quantum Hall effect
Zhenisbek Tagay, Ahmed Abouelkomsan, Yugo Onishi +4
The integer quantum Hall effect remains the most paradigmatic and remarkable example of exact quantization in condensed matter physics. Its Hall conductivity is fixed to $…
Topological Protection in a Landau Flat Band at , a Candidate Filling Factor for Unconventional Correlations
Waseem Hussain, Haoyun Huang, Loren N. Pfeiffer +3
Strong interactions in Landau flat bands are known to stabilize correlated states that do not form in other types of flat bands. We report hallmarks of topological protection at th…
Effective-Hamiltonian reconstruction through Bloch-wave interferometry in bulk GaAs driven by strong THz fields
Qile Wu, Seamus D. O Hara, Joseph B. Costello +3
Reconstructing effective Hamiltonians of condensed matter systems directly from experimental data is challenging because of the intricate relationship between Hamiltonian parameter…
Indium-Bond-And-Stop-Etch (IBASE) Technique for Dual-side Processing of Thin High-mobility GaAs/AlGaAs Epitaxial Layers
Changyun Yoo, Kenneth W. West, Loren N. Pfeiffer +4
We present a reliable flip-chip technique for dual-side processing of thin (<1 micron) high-mobility GaAs/AlGaAs epitaxial layers. The technique allows the fabrication of small (mi…
Interference measurements of non-Abelian e/4 & Abelian e/2 quasiparticle braiding
R. L. Willett, K. Shtengel, C. Nayak +6
The quantum Hall states at filling factors and are expected to have Abelian charge quasiparticles and non-Abelian charge quasiparticles. The non-Abelian s…
Split-gate device for indirect excitons
C. J. Dorow, J. R. Leonard, M. M. Fogler +3
We present a concept and experimental proof of principle for split-gate devices for indirect excitons (IXs). The split-gate forms a narrow channel, a point contact, for IX current.…
Time-resolved observation of coherent excitonic nonlinear response with a table-top narrowband THz pulse wave
K. Uchida, H. Hirori, T. Aoki +9
By combining a tilted-pulse-intensity-front scheme using a LiNbO3 crystal and a chirped-pulse-beating method, we generated a narrowband intense terahertz (THz) pulse, which had a m…
Microwave pinning modes near Landau filling in two-dimensional electron systems with alloy disorder
B. -H. Moon, L. W. Engel, D. C. Tsui +2
We report measurements of microwave spectra of two-dimensional electron systems hosted in dilute Al alloy, AlGaAs, for a range of Landau level fillings, , around 1.…
Pinning modes of high magnetic field Wigner solids with controlled alloy disorder
B. -H. Moon, L. W. Engel, D. C. Tsui +2
For a series of samples with 2D electron systems in dilute Al_x Ga_{1-x}As, with varying x from 0 to 0.8 %, we survey the pinning mode resonances of Wigner solids at the low Landau…
Breakdown of the integer and fractional quantum Hall states in a quantum point contact
C. Dillard, X. Lin, M. A. Kastner +2
The integer and fractional quantum Hall states are known to break down at high dc bias, exhibiting deviation from the ideal incompressible behavior. We measure breakdown of the ν=…
Measurements of quasi-particle tunneling in the nu = 5/2 fractional quantum Hall state
X. Lin, C. Dillard, M. A. Kastner +2
Some models of the 5/2 fractional quantum Hall state predict that the quasi-particles, which carry the charge, have non-Abelian statistics: exchange of two quasi-particles changes…
Quantitative Analysis of the Disorder Broadening and the Intrinsic Gap for the Fractional Quantum Hall State
N. Samkharadze, J. D. Watson, G. Gardner +4
We report a reliable method to estimate the disorder broadening parameter from the scaling of the gaps of the even and major odd denominator fractional quantum Hall states of the s…
Alternation and interchange of e/4 and e/2 period interference oscillations as evidence for filling factor 5/2 non-Abelian quasiparticles
R. L. Willett, L. N. Pfeiffer, K. W. West
It is a theoretical conjecture that 5/2 fractional quantum Hall state charge e/4 excitations may obey exotic non-Abelian statistics. In edge state interference these purported non-…
An All-Cryogenic THz Transmission Spectrometer
P. J. Burke, J. P. Eisenstein, L. N. Pfeiffer +1
This paper describes a THz transmission spectrometer for the spectral range of 2-65 cm^-1 (100 GHz to 2 THz) with a spectral resolution of at least 1.8 cm^-1 (50 GHz) where the sou…