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Resonant inelastic x-ray scattering (RIXS) spectra at the Fe K-edge were measured for a single crystal of the iron oxypnictide superconductor PrFeAsO0.7 (Tc=42 K). They disclose a weak, broad feature centered around 4.5 eV energy loss,…

Strongly Correlated Electrons · Physics 2015-05-14 I. Jarrige , K. Ishii , M. Yoshida , T. Fukuda , K. Ikeuchi , M. Ishikado , N. Hiraoka , K. D. Tsuei , H. Kito , A. Iyo , H. Eisaki , S. Shamoto

We present a detailed Cu K-edge resonant inelastic X-ray scattering (RIXS) study of the Mott insulator La2CuO4 in the 1-7 eV energy transfer range. As initially found for the high-temperature superconductor HgBa2CuO4+d, the spectra exhibit…

Strongly Correlated Electrons · Physics 2015-06-25 L. Lu , J. N. Hancock , G. Chabot-Couture , O. P. Vajk , G. Yu , K. Ishii , J. Mizuki , D. Casa , T. Gog , M. Greven

The energy spectrum of topological semimetals contains protected degeneracies in reciprocal space that correspond to Weyl, Dirac, or multifold fermionic states. To exploit the unconventional properties of these states, one has to access the…

We study resonant inelastic x-ray scattering (RIXS) peaks corresponding to low energy particle-hole excited states of metallic FeTe and semi-metallic TiSe$_2$ for photon incident energy tuned near the $L_{3}$ absorption edge of Fe and Ti…

Materials Science · Physics 2014-07-04 B. Barbiellini , J. N. Hancock , C. Monney , Y. Joly , G. Ghiringhelli , L. Braicovich , T. Schmitt

We present a study of the charge-transfer excitations in undoped Nd2CuO4 using resonant inelastic X-ray scattering (RIXS) at the Cu K-edge. At the Brillouin zone center, azimuthal scans that rotate the incident-photon polarization within…

Superconductivity · Physics 2015-03-13 G. Chabot-Couture , J. N. Hancock , P. K. Mang , D. M. Casa , T. Gog , M. Greven

Core hole resonance is used in X-ray spectroscopy to incisively probe the local electronic states of many-body systems. Here, resonant inelastic X-ray scattering (RIXS) is studied as a function of incident photon energy on Mott insulators…

Strongly Correlated Electrons · Physics 2016-12-14 L. Andrew Wray , Shih-Wen Huang , Yuqi Xia , M. Zahid Hasan , Charles Mathy , Hiroshi Eisaki , Zahid Hussain , Yi-De Chuang

Despite significant progress in resonant inelastic x-ray scattering (RIXS) experiments on cuprates at the Cu L-edge, a theoretical understanding of the cross-section remains incomplete in terms of elementary excitations and the connection…

Strongly Correlated Electrons · Physics 2016-05-16 Chunjing Jia , Krzysztof Wohlfeld , Yao Wang , Brian Moritz , Thomas P. Devereaux

We report a comprehensive resonant inelastic x-ray scattering (RIXS) study of various iridate materials focusing on core-level excitations and transitions between crystal-field split d-levels. The 2p core hole created at the Ir $L_3$…

Strongly Correlated Electrons · Physics 2018-05-10 Young-June Kim , J. P. Clancy , H. Gretarsson , G. Cao , Yogesh Singh , Jungho Kim , M. H. Upton , D. Casa , T. Gog

Resonant inelastic X-ray scattering (RIXS) is a powerful probe of elementary excitations in solids. It is now widely applied to study magnetic excitations. However, its complex cross-section means that RIXS has been more difficult to…

Strongly Correlated Electrons · Physics 2021-06-30 H. C. Robarts , M. Garcia-Fernandez , J. Li , A. Nag , A. C. Walters , N. E. Headings , S. M. Hayden , Ke-Jin Zhou

Generic low-energy spectral features related to $d$-$d$ excitations in nearly cubic vanadium perovskites are predicted for the expected $L$-edge resonant inelastic X-ray scattering (RIXS) measurements. Model Hamiltonian describing local…

Strongly Correlated Electrons · Physics 2013-01-22 V. Yushankhai , L. Siurakshina

Low-energy electron excitation spectra were measured on a single crystal of a typical iron-based superconductor PrFeAsO$_{0.7}$ using resonant inelastic X-ray scattering (RIXS) at the Fe-$L_3$ edge. Characteristic RIXS features are clearly…

Strongly Correlated Electrons · Physics 2016-07-18 T. Nomura , Y. Harada , H. Niwa , K. Ishii , M. Ishikado , S. Shamoto , I. Jarrige

We investigate theoretically the resonant inelastic x-ray scattering (RIXS) at the $K$ edge of Si on the basis of an ab initio calculation. We calculate the RIXS spectra with systematically varying transfered-momenta, incident-photon energy…

Materials Science · Physics 2007-05-23 Yunori Nisikawa , Manabu Usuda , Jun-ichi Igarashi

We have investigated the electronic structure of Sr2IrO4 within the density-functional theory using the generalized gradient approximation while taking into account strong Coulomb correlations in the framework of the fully relativistic…

Strongly Correlated Electrons · Physics 2023-10-13 V. N. Antonov , D. A. Kukusta , L. V. Bekenov

One-dimensional (1D) magnetic insulators have attracted significant interest as a platform for studying emergent phenomena such as quasiparticle fractionalization and quantum criticality. The antiferromagnetic Heisenberg chain of spins-1/2…

Strongly Correlated Electrons · Physics 2018-12-20 J. Schlappa , U. Kumar , K. J. Zhou , S. Singh , M. Mourigal , V. N. Strocov , A. Revcolevschi , L. Patthey , H. M. Rønnow , S. Johnston , T. Schmitt

In resonant inelastic x-ray scattering (RIXS) spectra of K$_2$IrCl$_6$, the peak for the $j=3/2$ multiplet states shows a splitting that resembles non-cubic crystal-field effect although the compound is cubic down to 0.3 K. Here we…

Strongly Correlated Electrons · Physics 2023-08-21 Naoya Iwahara , Wataru Furukawa

Ru M$_3$-edge resonant inelastic x-ray scattering (RIXS) measurements of RuCl$_3$ with 27 meV resolution reveals a spin-orbit exciton without noticeable splitting. We extract values for the spin-orbit coupling constant ($\lambda=154\pm2$…

Strongly Correlated Electrons · Physics 2020-01-29 Blair W Lebert , Subin Kim , Valentina Bisogni , Ignace Jarrige , Andi M Barbour , Young-June Kim

We have performed resonant inelastic x-ray scattering (RIXS) near the Cu-K edge on cuprate superconductors La(2-x)Sr(x)CuO(4), La(2-x)Ba(x)CuO(4), La(2-x)Sr(x)Cu(1-y)Fe(y)O(4) and Bi(1.76)Pb(0.35)Sr(1.89)CuO(6+d), covering underdoped to…

Superconductivity · Physics 2015-06-15 S. Wakimoto , K. Ishii , H. Kimura , K. Ikeuchi , M. Yoshida , T. Adachi , D. Casa , M. Fujita , Y. Fukunaga , T. Gog , Y. Koike , J. Mizuki , K. Yamada

We assess the capabilities of magnetic Resonant Inelastic X-ray Scattering (RIXS) at the O $K$ edge in undoped cuprates by taking La_{2}CuO_{4} as a benchmark case, based on a series of RIXS measurements that we present here. By combining…

We theoretically investigate the origin of the resonant x-ray scattering (RXS) signal near the Ce $L_{III}$ absorption edge in the quadrupolar ordering phase of CeB$_6$, considering the intersite interaction between the $\Gamma_8$ states in…

Strongly Correlated Electrons · Physics 2009-11-07 Tatsuya Nagao , Jun-ichi Igarashi

We use resonant inelastic x-ray scattering (RIXS) at the Cu L$_3$ edge to measure the charge and spin excitations in the "half-stuffed" Cu--O planes of the cuprate antiferromagnet Ba$_2$Cu$_3$O$_4$Cl$_2$. The RIXS line shape reveals…