Raman and fluorescence characteristics of resonant inelastic X-ray scattering from doped superconducting cuprates

Huang, He; Jia, Chunjing; Chen, Z. Y.; Wohlfeld, Krzysztof; Moritz, Brian; Devereaux, T. P.; Wu, Wen Bin; Okamoto, Jun; Lee, W. S.; Hashimoto, M.; He, Yu; Shen, Z.‐X.; Yoshida, Yoshiyuki; Eisaki, H.; Mou, Chung‐Yu; Chen, C. T.; Huang, D. J.

doi:10.1038/srep19657

Cited by 41 publications

(54 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Low energy spectral features are visible for all studied dopings. Detailed incident energy dependence has confirmed the magnetic nature of these spectral features [28,49], consistent with theoretical calculations [50] and the smooth evolution of these features with respect to the unambiguously magnetic feature in La 2 CuO 4 . Future experiments that explicitly resolve the scattered x-ray polarization would be a valuable addition to this issue [51].…”

Section: Results and Analysissupporting

confidence: 67%

Doping dependence of the magnetic excitations in La2−xSrxCuO4

et al. 2017

Self Cite

View full text Add to dashboard Cite

The magnetic correlations within the cuprates have undergone intense scrutiny as part of efforts to understand high temperature superconductivity. We explore the evolution of the magnetic correlations along the nodal direction of the Brillouin zone in La2−xSrxCuO4, spanning the doping phase diagram from the anti-ferromagnetic Mott insulator at x = 0 to the metallic phase at x = 0.26. Magnetic excitations along this direction are found to be systematically softened and broadened with doping, at a higher rate than the excitations along the anti-nodal direction. This phenomenology is discussed in terms of the nature of the magnetism in the doped cuprates. Survival of the high energy magnetic excitations, even in the overdoped regime, indicates that these excitations are marginal to pairing, while the influence of the low energy excitations remains ambiguous.

show abstract

Section: Results and Analysissupporting

confidence: 67%

Doping dependence of the magnetic excitations in La2−xSrxCuO4

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…They may have a dispersion similar to AFM spin waves at small momenta q, but they are mixed together. This is consistent with recent experiments [9,15] reporting similar excitation energy scales measured using different photon polarizations and scattering geometries.…”

Section: Results and Comparison With Experimentssupporting

confidence: 81%

“…Recent RIXS experiments seem to conclude that there are at least two distinct elementary excitations existing in the cuprate superconductors and their appearance depends both on the polarization of the incident photons and on the scattering geometry [10,15]. One is the particle-hole like excitation the resonance peaks of which change positions with different incident photon energies.…”

Section: Results and Comparison With Experimentsmentioning

confidence: 99%

“…A large family of both electronand hole-doped materials has been investigated and the spin excitations are reported to resemble the dispersion of the antiferromagnetic (AFM) magnon in the paramagnetic (PM) phase, called the paramagnon [4][5][6][7][8][9][10][11][12][13]. While many publications demonstrate the magnetic nature of the paramagnon [4][5][6]10], it is argued that the analogy with spin waves is only partial [11] and the itinerant nature of this magnetic excitation cannot be ignored [9,12,[14][15][16]. The strong flavor of the AFM magnon also reinvigorates an old debate that it may be that the AFM fluctuations, seemingly much more robust, are more important for cuprate superconductivity than strong correlation just as for iron-based superconductors [17].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Signatures of strong correlation effects in resonant inelastic x-ray scattering studies on cuprates

Lin

Lee

2016

Phys. Rev. B

View full text Add to dashboard Cite

Recently, spin excitations in doped cuprates have been measured using resonant inelastic x-ray scattering. The paramagnon dispersions show the large hardening effect in the electron-doped systems and seemingly doping independence in the hole-doped systems, with the energy scales comparable to that of the antiferromagnetic (AFM) magnons. This anomalous hardening effect and the lack of softening were partially explained by using the strong-coupling t − J model but with a three-site term [Nat. Commun. 5, 3314 (2014)], although the hardening effect is already present even without the latter. By considering the t − t − t − J model and using the slave-boson mean-field theory, we obtain, via the spin-spin susceptibility, the spin excitations in qualitative agreement with the experiments. The doping-dependent bandwidth due to the strong correlation physics is the origin of the hardening effect. We also show that dispersions in the AFM regime, different from those in the paramagnetic (PM) regime, hardly vary with dopant density. These excitations are mainly collective in nature instead of particle-hole-like. We further discuss the interplay and different contributions of these two kinds of excitations in the PM phase and show that the dominance of the collective excitation increases with decreasing dopant concentrations.

show abstract

“…Published results cover a broad range of scientific fields including e.g. charge transfer, electron-phonon interaction and samples in liquid state among others [1][2][3][4][5][6][7][8][9][10][11]. A critical aspect of the RIXS method is the low cross section for the radiative decay channel after core-ionization for light elements [12].…”

Section: Introductionmentioning

confidence: 99%

Highly efficient soft X-ray spectrometer based on a reflection zone plate for resonant inelastic X-ray scattering measurements

Yin¹,

Rehanek²,

Löchel³

et al. 2017

Opt. Express

View full text Add to dashboard Cite

Abstract:We present a newly designed compact and flexible soft X-ray spectrometer for resonant inelastic X-ray scattering (RIXS) studies within an energy range from 380 eV to 410 eV, which would include the K alpha emission lines of vital elements like nitrogen. We utilized an off-axis reflection zone plate (RZP) as the wavelength selective element with a maximum line density of 10000 l/mm. A higher energy resolution over a broader range of ± 15 eV around the designed energy was achieved by displacing the RZP. Additionally, for the first time, an actual optical side effect, the so-called comatic aberration was exploited to increase the energy resolution. First results show a resolving power in the order of 1300 for photon energy of 395 eV, which is comparable to a commercial varied line spacing grating (VLS). Assoufid, and A. Erko, "Hard x-ray spectroscopy and imaging by a reflection zone plate in the presence of astigmatism," Opt. Lett. 41(1), 29-32 (2016). 30. R. Mitzner,

show abstract

Raman and fluorescence characteristics of resonant inelastic X-ray scattering from doped superconducting cuprates

Cited by 41 publications

References 31 publications

Doping dependence of the magnetic excitations in La2−xSrxCuO4

Doping dependence of the magnetic excitations in La2−xSrxCuO4

Signatures of strong correlation effects in resonant inelastic x-ray scattering studies on cuprates

Highly efficient soft X-ray spectrometer based on a reflection zone plate for resonant inelastic X-ray scattering measurements

Contact Info

Product

Resources

About