Incoherent strange metal sharply bounded by a critical doping in Bi2212

Author:

Chen Su-Di12ORCID,Hashimoto Makoto3ORCID,He Yu12ORCID,Song Dongjoon4ORCID,Xu Ke-Jun1ORCID,He Jun-Feng12ORCID,Devereaux Thomas P.25ORCID,Eisaki Hiroshi4ORCID,Lu Dong-Hui3ORCID,Zaanen Jan16,Shen Zhi-Xun12ORCID

Affiliation:

1. Departments of Applied Physics and Physics, Stanford University, Stanford, CA 94305, USA.

2. Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, CA 94025, USA.

3. Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.

4. National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan.

5. Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.

6. Institute Lorentz for Theoretical Physics, Leiden University, 2300 RA Leiden, Netherlands.

Abstract

A sharp boundary in the cuprates Many physicists working on cuprate superconductors believe that the so-called strange metal phase in the cuprate phase diagram is associated with a quantum critical point. Within this picture, the quantum critical point gives rise to a V-shaped region in the doping-temperature phase diagram of the cuprates: the strange metal phase. Chen et al. used angle-resolved photoemission spectroscopy in the cuprate family Bi2212 to challenge this view. By taking comprehensive measurements as a function of doping and temperature—and making sure that the signal was not affected by environmental conditions—they found an incoherent strange metal phase that was sharply separated from a conventional phase by a temperature-independent vertical line in the phase diagram. Science , this issue p. 1099

Funder

U.S. Department of Energy

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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