Results 81 to 90 of about 49,129 (264)

High-quality two-dimensional electron gas in undoped InSb quantum wells

Physical Review Research, 2022
We report on transport experiments through high-mobility gate-tunable undoped InSb quantum wells (QWs). Due to the elimination of any Si modulation doping, the gate-defined two-dimensional electron gases in the QWs display a significantly increased ...
Zijin Lei, Erik Cheah, Km Rubi, Maurice E. Bal, Christoph Adam, Rüdiger Schott, Uli Zeitler, Werner Wegscheider, Thomas Ihn, Klaus Ensslin   +9 more
doaj   +1 more source

Theory of Incompressible States in a Narrow Channel

, 1997
We report on the properties of a system of interacting electrons in a narrow channel in the quantum Hall effect regime. It is shown that an increase in the strength of the Coulomb interaction causes abrupt changes in the width of the charge-density ...
B. I. Halperin, B. I. Halperin, B. I. Halperin, D. C. Tsui, D. Yoshioka, D. Yoshioka, F. D. M. Haldane, G. Fano, G. Timp, G. Timp, H. L. Störmer, H. W. Jiang, K. Niemelä, M. Greiter, M. Greiter, P. Jordan, P. Pietiläinen, R. B. Laughlin, R. L. Willett, S. T. Chui, T. Chakraborty, T. Chakraborty, T. Chakraborty, Tapash Chakraborty   +23 more
core   +1 more source

Degradable Magnetic Composites from Recycled NdFeB Magnets for Soft Actuation and Sensing

Advanced Robotics Research, EarlyView.
This work presents a degradable soft magnetic composite made from recycled NdFeB particles embedded in a gelatin‐based organogel. The material is processed into magnetic sensors and soft robotic components, which can later be dissolved in a green solvent to recover NdFeB magnetic particles.
Muhammad Bilal Khan, Lin Guo, Kilian Schäfer, Eduardo Sergio Oliveros‐Mata, Xiaotao Wang, Florian Hofmann, Matthias Lutzi, Mark Suppelt, Proloy Taran Das, Jan Schmidtpeter, Imants Dirba, Stephan Rinderknecht, Mario Kupnik, Denys Makarov, Oliver Gutfleisch   +14 more
wiley   +1 more source

Poissonian tunneling through an extended impurity in the quantum Hall effect

, 2010
We consider transport in the Poissonian regime between edge states in the quantum Hall effect. The backscattering potential is assumed to be arbitrary, as it allows for multiple tunneling paths.
Chevallier, Denis, Jonckheere, Thibaut, Martin, Thierry, Rech, Jérôme, Wahl, Claire   +4 more
core   +2 more sources

A Clarification on Quantum‐Metric‐Induced Nonlinear Transport

Advanced Science, EarlyView.
How does the quantum metric truly govern the nonlinear transport? The longstanding theoretical discrepancies are resolved in quantum‐metric‐induced nonlinear transport and the correct intrinsic nonlinear conductivity is identified. Furthermore, a toy model is engineered to suppress the competing effects, uniquely highlighting the role of quantum metric
Xiao‐Bin Qiang, Tianyu Liu, Zi‐Xuan Gao, Hai‐Zhou Lu, X. C. Xie   +4 more
wiley   +1 more source

Fractional spin for quantum Hall effect quasiparticles [PDF]

Nuclear Physics B, 1995
We investigate the issue of whether quasiparticles in the fractional quantum Hall effect possess a fractional intrinsic spin. The presence of such a spin $S$ is suggested by the spin-statistics relation $S= /2 $, with $ $ being the statistical angle, and, on a sphere, is required for consistent quantization of one or more quasiparticles.
Einarsson, T., Sondhi, S. L., Girvin, S. M., Arovas, D. P.   +3 more
openaire   +2 more sources

Hierarchical Strain‐Modified Medium‐Entropy Carbide Ceramics Exhibit Exceptional Ablation Resistance up to 2400°C

Advanced Science, EarlyView.
A novel strategy is developed by doping reduced graphene oxide (rGO) into a (HfZrTi)C medium‐entropy ceramic. This induces a hierarchical strain modification mechanism, synergistically inhibiting crack propagation at the microscale and dissipating stress at the mesoscale.
Junyi Xiao, Pengfei He, Lin Xue, Shujun Hu, Liliang Shao, Chuan Sun, Yunyun Ge, Jiangbo Cheng, Xiubing Liang   +8 more
wiley   +1 more source

Effective Field Theory of Relativistic Quantum Hall Systems

, 2014
Motivated by the observation of the fractional quantum Hall effect in graphene, we consider the effective field theory of relativistic quantum Hall states.
Golkar, Siavash, Roberts, Matthew M., Son, Dam Thanh   +2 more
core   +1 more source

Large Anomalous Hall Effect, Non‐Vanishing Berry Curvature in (110) FeRh Antiferromagnet Films via Interface Strain

Advanced Science, EarlyView.
This study demonstrates a strain‐tunable anomalous Hall response in the (110)‐oriented FeRh thin film. First‐principles calculations reveal that strain‐induced symmetry lowering redistributes Berry curvature near the Fermi level via band shifts and avoided crossings.
Yun‐Ho Kim, Gil‐Sung Kim, Jae Won Choi, Jung‐Min Cho, Won‐Yong Lee, Hongkee Yoon, Yeonho Choi, Shelby Fields, Steven Bennett, Mona Zebarjadi, Young‐Gui Yoon, Sang‐Kwon Lee   +11 more
wiley   +1 more source

Fractional quantum Hall effect without energy gap

, 2006
In the fractional quantum Hall effect regime we measure diagonal ($\rho_{xx}$) and Hall ($\rho_{xy}$) magnetoresistivity tensor components of two-dimensional electron system (2DES) in gated GaAs/Al$_{x}$Ga$_{1-x}$As heterojunctions, together with ...
A. M. M. Pruisken, B. Huckestein, B. I. Halperin, B. P. Dolan, D. E. Khmel’nitskiĭ, G. E. Tsydynzhapov, G. S. Boebinger, J. H. Smet, J. K. Jain, J. P. Eisenstein, J. P. Eisenstein, R. B. Laughlin, S. I. Dorozhkin, S. I. Dorozhkin, S. I. Dorozhkin, S. Kivelson, S. S. Murzin, S. S. Murzin, T. P. Smith, V. N. Zverev   +19 more
core   +1 more source