期刊
SCIENCE
卷 344, 期 6180, 页码 177-180出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1241591
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资金
- Slovenian Research Agency
- European restructuring funds (CENN Nanocenter)
- European Research Council advanced grant TRAJECTORY
Hidden states of matter may be created if a system out of equilibrium follows a trajectory to a state that is inaccessible or does not exist under normal equilibrium conditions. We found such a hidden (H) electronic state in a layered dichalcogenide crystal of 1T-TaS2 (the trigonal phase of tantalum disulfide) reached as a result of a quench caused by a single 35-femtosecond laser pulse. In comparison to other states of the system, the H state exhibits a large drop of electrical resistance, strongly modified single-particle and collective-mode spectra, and a marked change of optical reflectivity. The H state is stable until a laser pulse, electrical current, or thermal erase procedure is applied, causing it to revert to the thermodynamic ground state.
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