57 citations · 232 across the 20 of their papers we have counts for
20 papers
Melting of quantum Hall Wigner and bubble crystals
H. Xia, Qianhui Xu, Jiasen Niu +7
A two-dimensional crystal melts via the proliferation and unbinding of topological defects, yet quantitatively predicting the melting temperature in real systems is challengi…
Demonstration of a Field-Effect Three-Terminal Electronic Device with an Electron Mobility Exceeding 40 Million cm^2/(Vs)
T. J. Martz-Oberlander, B. Bulgaru, Z. Berkson-Korenberg +6
We report the fabrication and operation of a source-drain-gate three-terminal field-effect electronic device with an electron mobility exceeding cm / (Vs). Seve…
Resonant Magneto-phonon Emission by Supersonic Electrons in Ultra-high Mobility Two-dimensional System
Z. T. Wang, M. Hilke, N. Fong +4
We investigate resonant acoustic phonon scattering in the magneto-resistivity of an ultra-high mobility two-dimensional electron gas system subject to DC current in the temperature…
Interaction-Driven Asymmetry in the Breakdown of the = 1 Quantum Hall State
Hoai Anh Ho, Jian Huang, L. N. Pfeiffer +1
We report real-time detection of longitudinal and transverse transport responses across distinct frequency bands in a ferromagnetic filling factor = 1 integer quantum Hall stat…
Thermal Activation Signatures of the Anderson Insulator and the Wigner Solid forming near
S. A. Myers, Haoyun Huang, Waseem Hussain +3
When interactions overcome disorder, integer quantum Hall plateaus support topological phases with different bulk insulators. In the center of the plateau the bulk is an Ande…
Two-dimensional hydrodynamic viscous electron flow in annular Corbino rings
Sujatha Vijayakrishnan, Z. Berkson-Korenberg, J. Mainville +5
The concept of fluidic viscosity is ubiquitous in our everyday life and for it to arise the fluidic medium must necessarily form a continuum where macroscopic properties can emerge…
Aharonov-Borm oscillation and Microwave-induced edge-magnetoplasmon modes enhanced by quantum point contact
Xinghao Wang, Wenfeng Zhang, L. N. Pfeiffer +2
AB oscillation in weak magnetic field (B<1.5kG) is observed in QPC due to interference between electrons propagating along different QPC channels. We also investigate photo-induced…
Pseudospin Polarization of Composite Fermions under Uniaxial Strain
Shuai Yuan, Jiaojie Yan, Ke Huang +6
A two dimensional system with extra degrees of freedom, such as spin and valley, is of great interest in the study of quantum phase transitions. The critical condition when a trans…
Topological protection revealed by real-time longitudinal and transverse studies
Anh Ho Hoai, Jian Huang, L. N. Pfeiffer +1
Topology provides an essential concept for achieving unchanged (or protected) quantum properties in the presence of perturbations. A challenge facing realistic applications is that…
Superballistic flow of viscous electron fluid induced by microwave irradiation in quantum point contact
Xinghao Wang, Wenfeng Zhang, Rui-Rui Du +3
We measure the resistance oscillation of quantum point contact (QPC) under microwave (MW) radiation. What is different from the common resistance oscillation induced by edge magnet…
Evidence for Topological Protection Derived from Six-Flux Composite Fermions
Haoyun Huang, Waseem Hussain, S. A. Myers +4
The composite fermion theory opened a new chapter in understanding many-body correlations through the formation of emergent particles. The formation of two-flux and four-flux compo…
Large composite fermion effective mass at filling factor 5/2
M. Petrescu, Z. Berkson-Korenberg, Sujatha Vijayakrishnan +3
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 topological order predic…
Non-linear Transport Phenomena and Current-induced Hydrodynamics in Ultra-high Mobility Two-dimensional Electron Gas
Zitong Wang, Michael Hilke, Norm Fong +4
We report on non-linear transport phenomena at high filling factor and DC current-induced electronic hydrodynamics in an ultra-high mobility (mu=20x10^6 cm^2/Vs) two-dimensional el…
Even-Denominator Fractional Quantum Hall State at Filling Factor ν = 3/4
Chengyu Wang, A. Gupta, S. K Singh +6
Fractional quantum Hall states (FQHSs) exemplify exotic phases of low-disorder two-dimensional (2D) electron systems when electron-electron interaction dominates over the thermal a…
Competing charge density waves probed by non-linear transport and noise in the second and third Landau levels
K. Bennaceur, C. Lupien, B. Reulet +3
Charge density waves (CDW) in the second and third Landau levels (LL) are investigated by both non-linear electronic transport and noise. The use of a Corbino geometry ensures that…
Competing quantum Hall phases in the second Landau level in low density limit
W. Pan, A. Serafin, J. S. Xia +6
We present in this Letter the results from two high quality, low density GaAs quantum wells. In sample A of electron density n=5.0x10^10 cm^-2, anisotropic electronic transport beh…
Observation of exchange Coulomb interactions in the quantum Hall state at nu=3
A. B. Van'kov, T. D. Rhone, A. Pinczuk +3
Coulomb exchange interactions of electrons in the nu=3 quantum Hall state are determined from two inter-Landau level spin-flip excitations measured by resonant inelastic light scat…
Observation of pinning mode in Wigner solid of 1/3 fractional quantum Hall excitations
Han Zhu, Yong P. Chen, P. Jiang +4
We report the observation of a resonance in the microwave spectra of the real diagonal conductivities of a two-dimensional electron system within a range of ~ +- .0.015 $ from fill…
Density Induced Interchange of Anisotropy Axes at Half-Filled High Landau Levels
J. Zhu, W. Pan, H. L. Stormer +2
We observe density induced 90 rotations of the anisotropy axes in transport measurements at half-filled high Landau levels in the two dimensional electron system, where s…
Inelastic Light Scattering by Gap Excitations of Fractional Quantum Hall States at 1/3 <= ν<= 2/3
Moonsoo Kang, A. Pinczuk, B. S. Dennis +3
We report observations of collective gap excitations of the fractional quantum Hall (FQH) states at filling factors ν=p/(2p+1) (p=integer), for 1/3 <= ν<= 2/3, by inelastic light s…