output
19912026
Showing cond-mat.mes-hallShow all

1,009 papers · 1 filter

cond-mat.mes-hall2026

Interlayer-correlated fractional quantum Hall state in a trilayer electron system

Chengyu Wang, C. T. Tai, N. Toemtrisna +4

In multilayer quantum Hall systems, when the layer separation is sufficiently small, the interplay between intralayer and interlayer Coulomb interactions can lead to exotic, multi-…

cond-mat.mes-hall2026

Cascade of fractional quantum Hall states in 2D system

Zhimou Chen, Jiaojie Yan, Yuxuan Zhu +11

The observation of the fractional quantum Hall (FQH) effect in 2D electron gases ushered in investigations of topological phases driven by strong electron correlations. Their remar…

cond-mat.mes-hall2026

Observation of Superfluidity and Meissner Effect of Composite Bosons in GaAs Quantum Hall System

Yuanze Li, Renfei Wang, Jiahao Chen +7

The quantum Hall effect (QHE) is theoretically understood as a superfluid condensate of composite bosons (CBs) -- bound states of electrons and magnetic flux quanta. While dissipat…

cond-mat.mes-hall2025

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…

cond-mat.mes-hall2025★ 3 cited

Fractional quantum Hall state at with energy gap up to 6 K, and possible transition from one- to two-component state

Siddharth Kumar Singh, Chengyu Wang, Adbhut Gupta +3

The fractional quantum Hall state (FQHS) observed in the lowest Landau level at filling factor in wide quantum wells has been enigmatic for decades because the two-dimensio…

cond-mat.mes-hall2025★ 1 cited

Even-denominator fractional quantum Hall states with spontaneously broken rotational symmetry

Chengyu Wang, A. Gupta, S. K. Singh +5

The interplay between the fractional quantum Hall effect and nematicity is intriguing as it links emerging topological order and spontaneous symmetry breaking. Anisotropic fraction…

cond-mat.mes-hall2025★ 1 cited

Sub-tesla on-chip nanomagnetic metamaterial platform for angle-resolved photoemission spectroscopy

Wenxin Li, Wisha Wanichwecharungruang, Mingyang Guo +14

Magnetically controlled states in quantum materials are central to their unique electronic and magnetic properties. However, direct momentum-resolved visualization of these states…

cond-mat.mes-hall2025★ 3 cited

Density Dependence of the Phases of the Integer Quantum Hall Plateau in Low Disorder Electron Gases

Haoyun Huang, Waseem Hussain, S. A. Myers +3

Recent magnetotransport measurements in low-disorder electron systems confined to GaAs/AlGaAs samples revealed that the integer quantum Hall plateau is broken into three dis…

cond-mat.mes-hall2025

Higher Chern bands in helical homotrilayer transition metal dichalcogenides

Jungho Daniel Choi, Nicolás Morales-Durán, Yves H. Kwan +3

We propose helically twisted homotrilayer transition metal dichalcogenides as a platform for realizing correlated topological phases of matter with higher and tunable Chern numbers…

cond-mat.mes-hall2025

Quantized Transport of Fractional Quantum Hall Edge with Disordered Superconducting Proximity

Pok Man Tam, Hao Chen, Biao Lian

Quantum Hall edge states in proximity to a superconductor (SC) usually acquire a non-quantized electron-to-hole conversion probability in transport, due to non-universal SC couplin…

cond-mat.mes-hall2025★ 1 cited

Stable Real-Space Invariants and Topology Beyond Symmetry Indicators

Yoonseok Hwang, Vaibhav Gupta, Frank Schindler +4

We introduce stable real-space invariants (SRSIs), topological invariants defined from adiabatic deformations between Wannier states, generalizing previously discovered local and c…

cond-mat.mes-hall2025★ 1 cited

Nonlinear transport of Wigner solid phase surrounding the two-flux composite fermion liquid

Yu-jiang Dong, Xinghao Wang, Jianmin Zheng +5

We have investigated the low temperature (T) transport properties of fractional quantum Hall (FQH) states in a high-mobility two-dimensional hole gas. According to the composite fe…

cond-mat.mes-hall2025

Probing the topological protection of edge states in multilayer tungsten ditelluride with the superconducting proximity effect

X. Ballu, Z. Dou, L. Bugaud +9

The topology of WTe2, a transition metal dichalcogenide with large spin-orbit interactions, is thought to combine type II Weyl semimetal and second-order topological insulator (SOT…

cond-mat.mes-hall2025★ 5 cited

Competing Many-Body Phases at Small Fillings in Ultrahigh-Quality GaAs 2D Hole Systems: Role of Landau Level Mixing

Chengyu Wang, A. Gupta, S. K. Singh +4

The fractional quantum Hall state (FQHS), an incompressible liquid state hosting anyonic excitations with fractional charge and statistics, represents a compelling many-body phase…

cond-mat.mes-hall2025★ 1 cited

Back-action effects in charge detection

Sarath Sankar, Matan Lotem, Joshua Folk +2

Charge detection offers a powerful probe of mesoscopic structures based on quantum dots, but it also invariably results in measurement back-action (MBA). If strong, MBA can be detr…

cond-mat.mes-hall2025★ 5 cited

Real-time edge dynamics of non-Hermitian lattices

Tian-Hua Yang, Chen Fang

We derive the asymptotic forms of the Green's function at the open edges of general non-Hermitian band systems in all dimensions in the long-time limit, using a modified saddle-poi…

cond-mat.mes-hall2025★ 1 cited

Intervalley-Coupled Twisted Bilayer Graphene from Substrate Commensuration

Bo-Ting Chen, Michael G. Scheer, Biao Lian

We show that intervalley coupling can be induced in twisted bilayer graphene (TBG) by aligning the bottom graphene layer with either of two types of commensurate insulating triangu…

cond-mat.mes-hall2025★ 7 cited

Developing fractional quantum Hall states at even-denominator fillings 1/6 and 1/8

Chengyu Wang, P. T. Madathil, S. K. Singh +5

In the extreme quantum limit, when the Landau level filling factor , the dominant electron-electron interaction in low-disorder two-dimensional electron systems leads to exoti…

cond-mat.mes-hall2025★ 2 cited

Strong coupling of polaritons at room temperature in a GaAs/AlGaAs structure

Hassan Alnatah, Shuang Liang, Qiaochu Wan +7

We report direct measurement of the dispersion relation of polaritons in GaAs/AlGaAs microcavity structures at room temperature, which clearly shows that the polaritons are in the…

cond-mat.mes-hall2025★ 2 cited

Phonon spectra, quantum geometry, and the Goldstone theorem

Guglielmo Pellitteri, Zenan Dai, Haoyu Hu +5

Phonons are essential quasi-particles of all crystals and play a key role in fundamental properties such as thermal transport and superconductivity. In particular, acoustic phonons…

cond-mat.mes-hall2025★ 18 cited

Spectroscopy of the Fractal Hofstadter Energy Spectrum

Kevin P. Nuckolls, Michael G. Scheer, Dillon Wong +7

Hofstadter's butterfly, the predicted energy spectrum for non-interacting electrons confined to a two-dimensional lattice in a magnetic field, is one of the most remarkable fractal…

cond-mat.mes-hall2025★ 7 cited

Universal Wilson Loop Bound of Quantum Geometry

Jiabin Yu, Jonah Herzog-Arbeitman, B. Andrei Bernevig

We define the absolute Wilson loop winding and prove that it bounds the (integrated) quantum metric from below. This Wilson loop lower bound naturally reproduces the known Chern an…

cond-mat.mes-hall2024★ 3 cited

Polaron catastrophe within quantum acoustics

Alhun Aydin, Joonas Keski-Rahkonen, Anton M. Graf +4

The quantum acoustic framework has recently emerged as a non-perturbative, coherent approach to electron-lattice interactions, uncovering rich physics often obscured by perturbativ…

cond-mat.mes-hall2024★ 10 cited

High spatial resolution charge sensing of quantum Hall states

Cheng-Li Chiu, Taige Wang, Ruihua Fan +5

Charge distribution offers a unique fingerprint of important properties of electronic systems, including dielectric response, charge ordering and charge fractionalization. We devel…