Kun Yang

Publications223
h-index28
Citations2,730
Highly Influential Citations60
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Three-dimensional quantum Hall effect and metal–insulator transition in ZrTe5
TLDR
Evidence of the three-dimensional quantum Hall effect and a magnetic-field-driven quantum phase transition are observed in zirconium pentatelluride crystals, providing experimental evidence of the 3D QHE and a promising platform for further exploration of exotic quantum phases and transitions in 3D systems.
Modern Condensed Matter Physics
Many-body instability of Coulomb interacting bilayer graphene: Renormalization group approach
Low-energy electronic structure of (unbiased and undoped) bilayer graphene consists of two Fermi points with quadratic dispersions if trigonal warping is ignored. We show that short-range (or…
Quantum Hall effects in graphene-based two-dimensional electron systems.
TLDR
It is explained why graphene and bilayer graphene can be viewed respectively as J D 1 and 2 chiral two-dimensional electron gases (C2DEGs), and why this property frames their quantum Hall physics.
Chiral Gravitons in Fractional Quantum Hall Liquids.
TLDR
It is demonstrated that they are chiral gravitons carrying angular momentum -2, which are quanta of quantum motion of an internal metric, and show up as resonance peaks in the system's response to what is the fractional Hall analog of gravitational waves.
Collective modes and skyrmion excitations in graphene SU"4… quantum Hall ferromagnets
Graphene exhibits quantum Hall ferromagnetism in which an approximate $SU(4)$ symmetry involving spin and valley degrees of freedom is spontaneously broken. We construct a set of integer and…
Entanglement entropy scaling laws and eigenstate typicality in free fermion systems
We demonstrate that the entanglement entropy area law for free fermion ground states and the corresponding volume law for highly excited states are related by a position-momentum duality, and thus…
Response of a d x 2 − y 2 superconductor to a Zeeman magnetic field
We study the response of a two dimensional $d_{x^2-y^2}$ superconductor to a magnetic field that couples only to the spins of the electrons. In contrast to the s-wave case, the $d_{x^2-y^2}$ state is…
Gapless excitations in the Haldane-Rezayi state: The thin-torus limit
We study the thin-torus limit of the Haldane-Rezayi state. Eight of the ten ground states are found to assume a simple product form in this limit, as is known to be the case for many other quantum…
Thermopower of quantum Hall states in Corbino geometry as a measure of quasiparticle entropy
Using the Onsager relation between electric and heat transport coefficients, and considering the very different roles played by the quantum Hall condensate and quasiparticles in transport, we argue…
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