Download Angle-Resolved Photoemission Spectroscopy on by Junfeng He PDF

By Junfeng He

ISBN-10: 3662527324

ISBN-13: 9783662527320

This publication frequently specializes in the research of the high-temperature superconductor Bi2Sr2CaCu2O8+δ (Bi2212) and single-layer FeSe movie grown on SrTiO3 (STO) substrate through angle-resolved photoemission spectroscopy (ARPES). It presents the 1st digital facts for the starting place of the anomalous high-temperature superconductivity in single-layer FeSe grown on SrTiO3 substrate. coexisted sharp-mode couplings were pointed out in superconducting Bi2212. the 1st ARPES examine on single-layer FeSe/STO motion pictures has supplied key insights into the digital foundation of superconductivity during this method. A part diagram and digital indication of excessive Tc and insulator to superconductor crossover were verified within the single-layer FeSe/STO motion pictures. Readers will locate crucial info at the concepts used and engaging actual phenomena saw by way of ARPES.

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Extra info for Angle-Resolved Photoemission Spectroscopy on High-Temperature Superconductors: Studies of Bi2212 and Single-Layer FeSe Film Grown on SrTiO3 Substrate

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ARPES systems can also be labeled by different electron analyzers: onedimensional ARPES, two-dimensional ARPES, time-of-flight (3D) ARPES, and spin-resolved ARPES. Besides, there are other ARPES systems with special functions. For example, time-resolved ARPES can be used to study the non-equilibrium dynamics in the material system and spatially resolved ARPES has the capability 38 3 ARPES Systems Fig. 1 Six-axis cryostat Fig. 2 Modified six-axis cryostat with better performance to detect the electronic structure of the local region on the sample surface.

In this case, the removal of one electron in the N-electron system does not have any effect on the rest electrons, which means the ΨiN −1 state is still an eigenstate ΨmN0−1 of the (N − 1)-electron system. Therefore, in the equation of photoemission intensity I (k, E kin ), only |cm 0 ,i |2 = 1 (when m = m 0 ) and all the other cm,i terms are zero. Considering the δ function part in I (k, E kin ), we should expect ARPES spectra with δ function peaks at E kB = − k . However, in correlated systems, the removal of one electron gives rise to a dramatic change to the rest (N-1)electron system.

Mater. 12(7), 605–610 (2013) 16. : Photoemission study of Bi-cuprate high-Tc superconductors in the lightly-doped to underdoped regions. D. thesis. University of Tokyo (2004) 17. : Angle-resolved photoemission studies of the cuprate superconductors. Rev. Mod. Phys. 75, 473–541 (2003) 18. : Electronic structure studies of high-Tc superconductors by high-energy spectroscopies. IBM J. Res. Dev. 33(3), 372–381 (1989) 19. : Effective Hamiltonian for the superconducting Cu oxides. Phys. Rev. B 37(7), 3759–3761(R) (1988) 20.

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