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Bogoliubov quasipar...
Bogoliubov quasiparticle on the gossamer Fermi surface in electron-doped cuprates
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- Xu, Ke Jun (författare)
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA, USA; Department of Applied Physics, Stanford University, Stanford, CA, USA
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- Guo, Qinda (författare)
- KTH,Material- och nanofysik
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- Hashimoto, Makoto (författare)
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
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- Li, Zi Xiang (författare)
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
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- Chen, Su Di (författare)
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA, USA; Department of Applied Physics, Stanford University, Stanford, CA, USA; Department of Physics, University of California, Berkeley, CA, USA
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- He, Junfeng (författare)
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA, USA; Department of Physics and CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, China
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- He, Yu (författare)
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA, USA; Department of Applied Physics, Stanford University, Stanford, CA, USA; Department of Applied Physics, Yale University, New Haven, CT, USA
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- Li, Cong (författare)
- KTH,Material- och nanofysik,Department of Applied Physics, Stanford University, Stanford, CA, USA
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- Hårdensson Berntsen, Magnus (författare)
- KTH,Material- och nanofysik
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- Rotundu, Costel R. (författare)
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA, USA
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- Lee, Young S. (författare)
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA, USA; Department of Applied Physics, Stanford University, Stanford, CA, USA
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- Devereaux, Thomas P. (författare)
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA, USA; Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
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- Rydh, Andreas, 1973- (författare)
- Stockholms universitet,Fysikum,Department of Physics, Stockholm University, Stockholm, Sweden
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- Lu, Dong Hui (författare)
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA, USA
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- Lee, Dung Hai (författare)
- Department of Physics, University of California, Berkeley, CA, USA; Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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- Tjernberg, Oscar, 1967- (författare)
- KTH,Ljus och materiens fysik
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- Shen, Zhi Xun (författare)
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA, USA; Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA, USA; Department of Applied Physics, Stanford University, Stanford, CA, USA; Department of Physics, Stanford University, Stanford, CA, USA
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(creator_code:org_t)
- Springer Nature, 2023
- 2023
- Engelska.
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Ingår i: Nature Physics. - : Springer Nature. - 1745-2473 .- 1745-2481. ; 19:12, s. 1834-1840
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Electron-doped cuprates consistently exhibit strong antiferromagnetic correlations, leading to the prevalent belief that antiferromagnetic spin fluctuations mediate Cooper pairing in these unconventional superconductors. However, early investigations showed that although antiferromagnetic spin fluctuations create the largest pseudogap at hot spots in momentum space, the superconducting gap is also maximized at these locations. This presented a paradox for spin-fluctuation-mediated pairing: Cooper pairing is strongest at momenta where the normal-state low-energy spectral weight is most suppressed. Here we investigate this paradox and find evidence that a gossamer—meaning very faint—Fermi surface can provide an explanation for these observations. We study Nd2–xCexCuO4 using angle-resolved photoemission spectroscopy and directly observe the Bogoliubov quasiparticles. First, we resolve the previously observed reconstructed main band and the states gapped by the antiferromagnetic pseudogap around the hot spots. Within the antiferromagnetic pseudogap, we also observe gossamer states with distinct dispersion, from which coherence peaks of Bogoliubov quasiparticles emerge below the superconducting critical temperature. Moreover, the direct observation of a Bogoliubov quasiparticle permits an accurate determination of the superconducting gap, yielding a maximum value an order of magnitude smaller than the pseudogap, establishing the distinct nature of these two gaps. We propose that orientation fluctuations in the antiferromagnetic order parameter are responsible for the gossamer states.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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Xu, Ke Jun
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Guo, Qinda
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Hashimoto, Makot ...
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Li, Zi Xiang
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Chen, Su Di
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He, Junfeng
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visa fler...
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He, Yu
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Li, Cong
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Hårdensson Bernt ...
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Rotundu, Costel ...
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Lee, Young S.
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Devereaux, Thoma ...
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Rydh, Andreas, 1 ...
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Lu, Dong Hui
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Lee, Dung Hai
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Tjernberg, Oscar ...
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Shen, Zhi Xun
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Stockholms universitet