TY - JOUR
T1 - Resonant inelastic X-ray scattering spectra of cuprate superconductors predicted by model of fractionalized fermions
AU - Imada, Masatoshi
N1 - Funding Information:
The author thanks useful discussions with Atsushi Fujimori and Di-Jing Huang. This work was financially supported by Grant-in- Aids for Scientific Research (JSPS KAKENHI) (No. 16H06345) from Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. This work was also supported in part by the projects conducted under MEXT Japan named as "Priority Issue on Post-K computer" and "Program for Promoting Research on the Supercomputer Fugaku" in the subproject, "Basic Science for Emergence and Functionality in Quantum Matter: Innovative Strongly-Correlated Electron Science by Integration of Fugaku and Frontier Experiments". We also thank the support by the RIKEN Advanced Institute for Computational Science through the HPCI System Research project (hp190145 and hp200132) supported by MEXT.
Funding Information:
Acknowledgements The author thanks useful discussions with Atsushi Fujimori and Di-Jing Huang. This work was financially supported by Grant-in-Aids for Scientific Research (JSPS KAKENHI) (No. 16H06345) from Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. This work was also supported in part by the projects conducted under MEXT Japan named as “Priority Issue on Post-K computer” and “Program for Promoting Research on the Supercomputer Fugaku” in the subproject, “Basic Science for Emergence and Functionality in Quantum Matter: Innovative Strongly-Correlated Electron Science by Integration of Fugaku and Frontier Experiments”. We also thank the support by the RIKEN Advanced Institute for Computational Science through the HPCI System Research project (hp190145 and hp200132) supported by MEXT.
Publisher Copyright:
© 2021 The Physical Society of Japan.
PY - 2021/7/1
Y1 - 2021/7/1
N2 - We theoretically analyze the intensity of the resonant inelastic X-ray scattering (RIXS) based on Ansatz that the electron is fractionalized into two components. By fitting the angle resolved photoemission spectroscopy (ARPES) data of a cuprate high-Tc superconductor Bi2Sr2CaCu2O8+δ and the subsequent machine learning results obtained before by Yamaji et al. (arXiv:1903.08060), we determine the parameters of the two-component fermion model that describes the electron fractionalization. The RIXS spectra are predicted based on this formulation. We find that the intensity is enhanced in the superconducting phase relative to the normal or pseudogap phase. Since the enhancement is unusual, we propose this can be used as a critical test whether the unconventional electron fractionalization captures the essence of the cuprate superconductivity. This type of combined analyses using multiple independent spectroscopy data, with the help of theoretical and machine learning insights, regarded as integrated spectroscopy opens a new route to study difficult open issues in strongly correlated electron systems.
AB - We theoretically analyze the intensity of the resonant inelastic X-ray scattering (RIXS) based on Ansatz that the electron is fractionalized into two components. By fitting the angle resolved photoemission spectroscopy (ARPES) data of a cuprate high-Tc superconductor Bi2Sr2CaCu2O8+δ and the subsequent machine learning results obtained before by Yamaji et al. (arXiv:1903.08060), we determine the parameters of the two-component fermion model that describes the electron fractionalization. The RIXS spectra are predicted based on this formulation. We find that the intensity is enhanced in the superconducting phase relative to the normal or pseudogap phase. Since the enhancement is unusual, we propose this can be used as a critical test whether the unconventional electron fractionalization captures the essence of the cuprate superconductivity. This type of combined analyses using multiple independent spectroscopy data, with the help of theoretical and machine learning insights, regarded as integrated spectroscopy opens a new route to study difficult open issues in strongly correlated electron systems.
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U2 - 10.7566/JPSJ.90.074702
DO - 10.7566/JPSJ.90.074702
M3 - Article
AN - SCOPUS:85107961145
SN - 0031-9015
VL - 90
JO - journal of the physical society of japan
JF - journal of the physical society of japan
IS - 7
M1 - 074702
ER -