Stoner instabilities and Ising excitonic states in twisted transition metal dichalcogenides

التفاصيل البيبلوغرافية
العنوان: Stoner instabilities and Ising excitonic states in twisted transition metal dichalcogenides
المؤلفون: Ghiotto, Augusto, Wei, LingNan, Song, Larry, Zang, Jiawei, Tazi, Aya Batoul, Ostrom, Daniel, Watanabe, Kenji, Taniguchi, Takashi, Hone, James C., Rhodes, Daniel A., Millis, Andrew J., Dean, Cory R., Wang, Lei, Pasupathy, Abhay N.
سنة النشر: 2024
المجموعة: Condensed Matter
مصطلحات موضوعية: Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Mesoscale and Nanoscale Physics
الوصف: Moir\'e transition metal dichalcogenide (TMD) systems provide a tunable platform for studying electron-correlation driven quantum phases. Such phases have so far been found at rational fillings of the moir\'e superlattice, and it is believed that lattice commensurability plays a key role in their stability. In this work, we show via magnetotransport measurements on twisted WSe2 that new correlated electronic phases can exist away from commensurability. The first phase is an antiferromagnetic metal that is driven by proximity to the van Hove singularity. The second is a re-entrant magnetic field-driven insulator. This insulator is formed from a small and equal density of electrons and holes with opposite spin projections - an Ising excitonic insulator.
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2405.17316
رقم الأكسشن: edsarx.2405.17316
قاعدة البيانات: arXiv