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Gapless surface electronic structure of $1T–$$$$\mathrm{TiSe_2}$$ in the distorted phase

Journal Article · · Physical Review. B
 [1];  [1]
  1. Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
Here, low temperature, high resolution angle resolved photoemission experiments performed on bulk $1T–$$$$\mathrm{TiSe_2}$$ samples display conspicuous band folding as the only prominent signature of the periodic lattice distortion. The presence of a bulk electronic gap supporting a charge density wave phase is not confirmed in light of the new data. These observations cast serious doubts on the common belief of an electronic instability as the likely origin for the observed structural transition in $$\mathrm{TiSe_2}$$.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
SC0012704
OSTI ID:
2352193
Report Number(s):
BNL--225622-2024-JAAM
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 15 Vol. 108; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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