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Title: Incoherent strange metal sharply bounded by a critical doping in Bi2212

Abstract

In normal metals, macroscopic properties are understood using the concept of quasiparticles. In the cuprate high-temperature superconductors, the metallic state above the highest transition temperature is anomalous and is known as the “strange metal.” We studied this state using angle-resolved photoemission spectroscopy. With increasing doping across a temperature-independent critical value pc~ 0.19, we observed that near the Brillouin zone boundary, the strange metal, characterized by an incoherent spectral function, abruptly reconstructs into a more conventional metal with quasiparticles. Above the temperature of superconducting fluctuations, we found that the pseudogap also discontinuously collapses at the very same value of pc. These observations suggest that the incoherent strange metal is a distinct state and a prerequisite for the pseudogap; such findings are incompatible with existing pseudogap quantum critical point scenarios.

Authors:
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Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1576078
Alternate Identifier(s):
OSTI ID: 1574004
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Published Article
Journal Name:
Science
Additional Journal Information:
Journal Name: Science Journal Volume: 366 Journal Issue: 6469; Journal ID: ISSN 0036-8075
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Chen, Su-Di, Hashimoto, Makoto, He, Yu, Song, Dongjoon, Xu, Ke-Jun, He, Jun-Feng, Devereaux, Thomas P., Eisaki, Hiroshi, Lu, Dong-Hui, Zaanen, Jan, and Shen, Zhi-Xun. Incoherent strange metal sharply bounded by a critical doping in Bi2212. United States: N. p., 2019. Web. doi:10.1126/science.aaw8850.
Chen, Su-Di, Hashimoto, Makoto, He, Yu, Song, Dongjoon, Xu, Ke-Jun, He, Jun-Feng, Devereaux, Thomas P., Eisaki, Hiroshi, Lu, Dong-Hui, Zaanen, Jan, & Shen, Zhi-Xun. Incoherent strange metal sharply bounded by a critical doping in Bi2212. United States. doi:10.1126/science.aaw8850.
Chen, Su-Di, Hashimoto, Makoto, He, Yu, Song, Dongjoon, Xu, Ke-Jun, He, Jun-Feng, Devereaux, Thomas P., Eisaki, Hiroshi, Lu, Dong-Hui, Zaanen, Jan, and Shen, Zhi-Xun. Thu . "Incoherent strange metal sharply bounded by a critical doping in Bi2212". United States. doi:10.1126/science.aaw8850.
@article{osti_1576078,
title = {Incoherent strange metal sharply bounded by a critical doping in Bi2212},
author = {Chen, Su-Di and Hashimoto, Makoto and He, Yu and Song, Dongjoon and Xu, Ke-Jun and He, Jun-Feng and Devereaux, Thomas P. and Eisaki, Hiroshi and Lu, Dong-Hui and Zaanen, Jan and Shen, Zhi-Xun},
abstractNote = {In normal metals, macroscopic properties are understood using the concept of quasiparticles. In the cuprate high-temperature superconductors, the metallic state above the highest transition temperature is anomalous and is known as the “strange metal.” We studied this state using angle-resolved photoemission spectroscopy. With increasing doping across a temperature-independent critical value pc~ 0.19, we observed that near the Brillouin zone boundary, the strange metal, characterized by an incoherent spectral function, abruptly reconstructs into a more conventional metal with quasiparticles. Above the temperature of superconducting fluctuations, we found that the pseudogap also discontinuously collapses at the very same value of pc. These observations suggest that the incoherent strange metal is a distinct state and a prerequisite for the pseudogap; such findings are incompatible with existing pseudogap quantum critical point scenarios.},
doi = {10.1126/science.aaw8850},
journal = {Science},
number = 6469,
volume = 366,
place = {United States},
year = {2019},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1126/science.aaw8850

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Cited by: 4 works
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