Hysteretic Electronic Phase Transitions in Correlated Charge-Density-Wave State of 1T-TaS2
| Autor: | Yanyan, Geng, Le, Lei, Haoyu, Dong, Jianfeng, Guo, Shuo, Mi, Yan, Li, Li, Huang, Fei, Pang, Rui, Xu, Weichang, Zhou, Zheng, Liu, Wei, Ji, Zhihai, Cheng |
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| Rok vydání: | 2022 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Recently, many exotic electronic states, such as quantum spin liquid (QSL) and superconductivity (SC), have been extensively discovered and introduced in layered transition metal dichalcogenides 1T-TaS2 by controlling their complex correlated charge-density-wave (CDW) states. However, few studies have focused on its hysteretic electronic phase transitions based on the in-depth discussion of the delicate interplay among temperature-dependent electronic interactions. Here, we reported a sequence of spatial electronic phase transitions in the hysteresis temperature range of 1T-TaS2 via variable-temperature scanning tunneling microscopy (VT-STM). The emergence, evolution, coexistence, and separation of diverse novel electronic states within the commensurate CDW/triclinic CDW (CCDW/TCDW) phase are investigated in detail through the warming/cooling process. These novel emergent electronic states can be attributed to the delicate temperature-dependent competition and/or cooperation of interlayer interactions, intralayer electron-electron correlation, and electron-phonon (e-ph) coupling of 1T-TaS2. Our results not only provide a novel insight to understand the hysteretic electronic phase transitions of correlated CDW state, but also pave a way to realize more exotic quantum states by accurately and effectively controlling various interactions in correlated materials. Comment: 20 pages, 5 figures |
| Databáze: | arXiv |
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