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Spectroscopic Evidence for Electron-Boson Coupling in Electron-Doped Sr_{2}IrO_{4}.
Hu, Yong; Chen, Xiang; Peng, S-T; Lane, C; Matzelle, M; Sun, Z-L; Hashimoto, M; Lu, D-H; Schwier, E F; Arita, M; Wu, T; Markiewicz, R S; Shimada, K; Chen, X-H; Shen, Z-X; Bansil, A; Wilson, S D; He, J-F.
Afiliação
  • Hu Y; Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Chen X; Materials Department, University of California, Santa Barbara, California 93106, USA.
  • Peng ST; Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Lane C; Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA.
  • Matzelle M; Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA.
  • Sun ZL; Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Hashimoto M; Stanford Synchrotron Radiation Lightsource and Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
  • Lu DH; Stanford Synchrotron Radiation Lightsource and Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
  • Schwier EF; Hiroshima Synchrotron Radiation Center, Hiroshima University, Hiroshima 739-0046, Japan.
  • Arita M; Hiroshima Synchrotron Radiation Center, Hiroshima University, Hiroshima 739-0046, Japan.
  • Wu T; Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Markiewicz RS; Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA.
  • Shimada K; Hiroshima Synchrotron Radiation Center, Hiroshima University, Hiroshima 739-0046, Japan.
  • Chen XH; Hefei National Laboratory for Physical Sciences at the Microscale, Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
  • Shen ZX; Stanford Synchrotron Radiation Lightsource and Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
  • Bansil A; Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, Stanford, California 94305, USA.
  • Wilson SD; Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA.
  • He JF; Materials Department, University of California, Santa Barbara, California 93106, USA.
Phys Rev Lett ; 123(21): 216402, 2019 Nov 22.
Article em En | MEDLINE | ID: mdl-31809181
The pseudogap, d-wave superconductivity and electron-boson coupling are three intertwined key ingredients in the phase diagram of the cuprates. Sr_{2}IrO_{4} is a 5d-electron counterpart of the cuprates in which both the pseudogap and a d-wave instability have been observed. Here, we report spectroscopic evidence for the presence of the third key player in electron-doped Sr_{2}IrO_{4}: electron-boson coupling. A kink in nodal dispersion is observed with an energy scale of ∼50 meV. The strength of the kink changes with doping, but the energy scale remains the same. These results provide the first noncuprate platform for exploring the relationship between the pseudogap, d-wave instability, and electron-boson coupling in doped Mott insulators.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2019 Tipo de documento: Article País de afiliação: China País de publicação: Estados Unidos
Texto completo
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Imprimir
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PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2019 Tipo de documento: Article País de afiliação: China País de publicação: Estados Unidos