An equilibrium trion liquid in atomic double layers

IF 45.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-10-16 DOI:10.1126/science.adn5886

Phuong X. Nguyen, Raghav Chaturvedi, Liguo Ma, Patrick Knuppel, Kenji Watanabe, Takashi Taniguchi, Kin Fai Mak, Jie Shan

引用次数: 0

Abstract

A trion is a bound state of two electrons and one hole or two holes and one electron. To date, trions have been observed only as optically excited states in doped semiconductors. We report the emergence of an equilibrium trion liquid in Coulomb-coupled molybdenum diselenide (MoSe₂) and tungsten diselenide (WSe₂) monolayers. By electrically tuning the hole density in WSe₂ to be two times the electron density in MoSe₂, we generated equilibrium interlayer trions with binding energy in the milli–electron volt energy scale at temperatures two orders of magnitude below the Fermi temperature. We observed a density-tuned phase transition to an electron-hole plasma, spin-singlet correlations for the constituent holes, and Zeeman field–induced dissociation of the trions. Our results pave the way for exploration of the correlated phases of composite particles in solids.

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原子双层中的平衡离子液体

三角电子是两个电子和一个空穴或两个空穴和一个电子的束缚态。到目前为止，在掺杂的半导体中只观察到三极管的光激发态。我们报道了库仑偶联二硒化钼（MoSe2）和二硒化钨（WSe2）单层中平衡离子液体的出现。通过电调谐WSe2中的空穴密度为MoSe2中的电子密度的两倍，我们在比费米温度低两个数量级的温度下产生了具有毫电子伏特能量尺度的平衡层间三角子。我们观察到密度调谐相变到电子-空穴等离子体，组成空穴的自旋单线态相关，以及塞曼场诱导的trions解离。我们的结果为探索固体中复合颗粒的相关相铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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