We present the transport and capacitance measurements of 10nm wide GaAs quantum wells with hole densities around the critical point of the 2D metal-insulator transition (critical density $p_c$ down to 0.8$\times10^{10}$/cm$^2$, $r_s\sim$36). For metallic hole density $p_c < p <p_c +0.15\times10^{10}$/cm$^2$, a reentrant insulating phase (RIP) is observed between the $ν$=1 quantum Hall state and the zero field metallic state and is attributed to the formation of pinned Wigner crystal. Through studying the evolution of the RIP versus 2D hole density by transport and capacitance experiments, we show that the RIP is incompressible and continuously connected to the zero field insulator, suggesting a similar origin for these two phases.
Reentrant Quantum Spin Hall States in Charge Density Wave Phase of Doped Single-Layer Transition Metal Dichalcogenides
利用第一性原理计算方法，我们揭示了单层1 T $'$ -MoTe $_2$和1 T $'$ -WTe $_2$在无掺杂时呈现量子自旋霍尔（QSH）边缘态的一系列相变随电子掺杂的变化.随着掺杂的增加，我们发现声子介导的超导相首先实现，其次是一个电荷密度波（CDW）相与非对称晶格对称性。新发现的CDW相显示狄拉克或外尔能带的自旋轨道耦合的分数带填充的情况下，重新进入拓扑绝缘相与完全填充的带。与CDW相共存的QSH态的强劲复苏被证明是源于通过强电子-声子相互作用引起的非对称晶格畸变引起的能带反转，从而表明仅通过掺杂就可以在二维晶体上实现超导，密度波和拓扑态之间的各种界面态。
Reentrant behavior and possible $2/3$ magnetization plateau on the double-trillium langbeinite K$_2$Ni$_2$(SO$_4$)$_3$
Institute of Physics, University of Bonn（波恩大学物理研究所）；Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf（德累斯顿强磁场实验室（HLD-EMFL），亥姆霍兹-德累斯顿-罗斯多夫中心）；Helmholtz-Zentrum Berlin für Materialien und Energie（柏林亥姆霍兹材料与能源中心）；Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin（达勒姆复杂量子系统中心与柏林自由大学物理系）；Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne（洛桑联邦理工学院物理研究所量子磁性实验室）
Competing Orders Driven by Wigner Crystal Phase in Rhombohedral Graphene
Institute of Physics, Ecole Polytechnique Fédérale de Lausanne（洛桑联邦理工学院物理研究所）；SPEC, CEA, CNRS, Université Paris-Saclay（法国原子能和替代能源委员会、国家科学研究中心、萨克雷大学SPEC实验室）；Department of Physics, Florida State University（佛罗里达州立大学物理系）；National High Magnetic Field Laboratory（国家高磁场实验室）；FSU Quantum Initiative, Florida State University（佛罗里达州立大学FSU量子倡议项目）；Research Center for Functional Materials, National Institute for Materials Science（日本物质材料研究机构功能材料研究中心）
Transducing quantum-spin-ice correlations into Weyl Fermi-arc transport at a synthetic Kondo lattice interface
Rutgers University（罗格斯大学）；University of California, Berkeley（加州大学伯克利分校）；Rice University（莱斯大学）；National High Magnetic Field Laboratory（国家高磁场实验室）；Tsinghua University（清华大学）
Ultrafast electron crystallography reveals the atomic pathway of a light-driven correlated insulator-to-metal transition
Stockholm University（斯德哥尔摩大学）；Uppsala University（乌普萨拉大学）；Technion–Israel Institute of Technology（以色列理工学院）；KTH Royal Institute of Technology（瑞典皇家理工学院）；Australian National University（澳大利亚国立大学）
