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1. Interfacial thermal conductance in 2D WS2/MoSe2 and MoS2/MoSe2 lateral heterostructures

   https://doi.org/10.1016/j.commatsci.2024.113282  

   Xu, Shihao; Wu, Peichen; Chen, Youping (October 2024, Computational Materials Science)
2. Moiré trions in MoSe2/WSe2 heterobilayers

   https://doi.org/10.1038/s41565-021-00969-2  

   Wang, Xi; Zhu, Jiayi; Seyler, Kyle L.; Rivera, Pasqual; Zheng, Huiyuan; Wang, Yingqi; He, Minhao; Taniguchi, Takashi; Watanabe, Kenji; Yan, Jiaqiang; et al (September 2021, Nature Nanotechnology)

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3. Signatures of moiré trions in WSe2/MoSe2 heterobilayers

   https://doi.org/10.1038/s41586-021-03541-z  

   Liu, Erfu; Barré, Elyse; van Baren, Jeremiah; Wilson, Matthew; Taniguchi, Takashi; Watanabe, Kenji; Cui, Yong-Tao; Gabor, Nathaniel M.; Heinz, Tony F.; Chang, Yia-Chung; et al (June 2021, Nature)

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4. Exciton-polaron Rydberg states in monolayer MoSe2 and WSe2

   https://doi.org/10.1038/s41467-021-26304-w  

   Liu, Erfu; van Baren, Jeremiah; Lu, Zhengguang; Taniguchi, Takashi; Watanabe, Kenji; Smirnov, Dmitry; Chang, Yia-Chung; Lui, Chun Hung (October 2021, Nature Communications)

   Abstract Exciton polaron is a hypothetical many-body quasiparticle that involves an exciton dressed with a polarized electron-hole cloud in the Fermi sea. It has been evoked to explain the excitonic spectra of charged monolayer transition metal dichalcogenides, but the studies were limited to the ground state. Here we measure the reflection and photoluminescence of monolayer MoSe₂and WSe₂gating devices encapsulated by boron nitride. We observe gate-tunable exciton polarons associated with the 1 s–3 s exciton Rydberg states. The ground and excited exciton polarons exhibit comparable energy redshift (15~30 meV) from their respective bare excitons. The robust excited states contradict the trion picture because the trions are expected to dissociate in the excited states. When the Fermi sea expands, we observe increasingly severe suppression and steep energy shift from low to high exciton-polaron Rydberg states. Their gate-dependent energy shifts go beyond the trion description but match our exciton-polaron theory. Our experiment and theory demonstrate the exciton-polaron nature of both the ground and excited excitonic states in charged monolayer MoSe₂and WSe₂. 

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5. Charge density wave activated excitons in TiSe2–MoSe2 heterostructures

   https://doi.org/10.1063/5.0067098  

   Joshi, Jaydeep; Scharf, Benedikt; Mazin, Igor; Krylyuk, Sergiy; Campbell, Daniel_J; Paglione, Johnpierre; Davydov, Albert; Žutić, Igor; Vora, Patrick_M (January 2022, APL Materials)

   Layered materials enable the assembly of a new class of heterostructures where lattice-matching is no longer a requirement. Interfaces in these heterostructures therefore become a fertile ground for unexplored physics as dissimilar phenomena can be coupled via proximity effects. In this article, we identify an unexpected photoluminescence (PL) peak when MoSe2 interacts with TiSe2. A series of temperature-dependent and spatially resolved PL measurements reveal that this peak is unique to the TiSe2–MoSe2 interface, is higher in energy compared to the neutral exciton, and exhibits exciton-like characteristics. The feature disappears at the TiSe2 charge density wave transition, suggesting that the density wave plays an important role in the formation of this new exciton. We present several plausible scenarios regarding the origin of this peak that individually capture some aspects of our observations but cannot fully explain this feature. These results therefore represent a fresh challenge for the theoretical community and provide a fascinating way to engineer excitons through interactions with charge density waves. 

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