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We present a high-resolution photoemission study on the strongly correlated Ce-compounds CeCu_6, CeCu_2Si_2, CeRu_2Si_2, CeNi_2Ge_2, and CeSi_2. Using a normalization procedure based on a division by the Fermi-Dirac distribution we get…

Strongly Correlated Electrons · Physics 2007-08-03 D. Ehm , S. H"ufner , F. Reinert , J. Kroha , P. W"olfle , O. Stockert , C. Geibel , H. von L"ohneysen

We investigate the electronic structure of a novel Kondo lattice system CeCuX2 (X = As/Sb) employing high resolution depth-resolved photoemission spectroscopy of high quality single crystalline materials. CeCuSb2 and CeCuAs2 represent…

The low-energy spin- and charge-sensitive thermodynamic properties of a broad range of strongly correlated 4f-electron systems follow Kondo scaling, with a characteristic Kondo temperature, $T_K$. While the theory is known for thermodynamic…

Resonant photoemission (RPES) at the Ce 3d -> 4f threshold has been performed for alpha-like compound CeNi_2 with extremely high energy resolution (full width at half maximum < 0.2 eV) to obtain bulk-sensitive 4f spectral weight. The…

Strongly Correlated Electrons · Physics 2009-10-31 See-Hun Yang , S. -J. Oh , Hyeong-Do Kim , Ran-Ju Jung , A. Sekiyama , T. Iwasaki , S. Suga , Y. Saitoh , E. -J. Cho , J. -G. Park

Semiconducting skutterudite CeFe$_4$P$_{12}$ is investigated by synchrotron x-ray photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). Ce 3$d$ core-level PES and 3$d-4f$ XAS, in combination with single impurity Anderson…

High-resolution hard X-ray photoemission measurements have been performed to clarify the electronic structure originating from the strong correlation between electrons in bulk Ce 3$d$ core-level spectra of CeNi$_{1-x}$Co$_x$Ge$_2$ (0 $\leq$…

Strongly Correlated Electrons · Physics 2015-05-13 H. J. Im , T. Ito , S. Kimura , H. -D. Kim , J. B. Hong , Y. S. Kwon

Bulk sensitive hard x-ray photoelectron spectroscopy data of the Ce 3$p$ core level of CeRu$_4$Sn$_6$ are presented. Using a combination of full multiplet and configuration iteration model we were able to obtain an accurate lineshape…

Strongly Correlated Electrons · Physics 2017-04-26 M. Sundermann , K. Chen , Y. Utsumi , Y. -H. Wu , K. -D. Tsuei , J. Haenel , A. Prokofiev , S. Paschen , A. Tanaka , L. H. Tjeng , A. Severing

The magnetic properties of rare earth compounds are usually well captured by assuming a fully localized f shell and only considering the Hund's rule ground state multiplet split by a crystal electrical field (CEF). Currently, the standard…

Strongly Correlated Electrons · Physics 2018-07-06 A. Amorese , N. Caroca-Canales , S. Seiro , C. Krellner , G. Ghiringhelli , N. B. Brookes , D. V. Vyalikh , C. Geibel , K. Kummer

We have measured Ce 4f spectral weights of extremely $\alpha$-like Ce-transition metal intermetallic compounds CeRh$_x$ (x=2,3) and CeNi$_x$ (x=2,5) by using the {\it bulk-sensitive} resonant photoemission technique at the Ce…

Strongly Correlated Electrons · Physics 2009-11-10 Ran-Ju Jung , Byung-Hee Choi , Hyeong-Do Kim , S. -J. Oh , En-Jin Cho , T. Iwasaki , A. Sekiyama , S. Imada , S. Suga , J. -G. Park

The occupancy of the 4f^n contributions in the Kondo semiconductors CeM2Al10(M = Ru, Os and Fe) has been quantitatively determined by means of bulk-sensitive hard x-ray photoelectron spectroscopy (HAXPES) on the Ce 3d core levels. Combining…

This review aims to introduce the x-ray emission spectroscopy (XES) and resonant inelastic x-ray scattering (RIXS) techniques to the materials scientist working with magnetic semiconductors (e.g. semiconductors doped with 3d transition…

Materials Science · Physics 2014-01-20 Mauro Rovezzi , Pieter Glatzel

The electronic structure of the heavy fermion compound CeB6 is probed by resonant inelastic soft X-ray scattering using photon energies across the Ce 3d and 4d absorption edges. The hybridization between the localized 4f orbitals and the…

Materials Science · Physics 2012-01-04 M. Magnuson , S. M. Butorin , J. -H. Guo , A. Agui , J. Nordgren , H. Ogasawara , A. Kotani , T. Takahashi , S. Kunii

We investigate the electronic structure of an antiferromagnetic Kondo lattice system CeAgAs2 employing hard x-ray photoemission spectroscopy. CeAgAs2, an orthorhombic variant of HfCuSi2 structure, exhibits antiferromagnetic ground state,…

We infer that soft-x-ray absorption spectroscopy is a versatile method for the determination of the crystal-field ground state symmetry of rare earth Heavy Fermion systems, complementing neutron scattering. Using realistic and universal…

Strongly Correlated Electrons · Physics 2008-04-07 P. Hansmann , A. Severing , Z. Hu , M. W. Haverkort , C. F. Chang , S. Klein , A. Tanaka , H. H. Hsieh , H. -J. Lin , C. T. Chen , B. Fåk , P. Lejay , L. H. Tjeng

Linear polarized soft-x ray absorption (XAS) and inelastic neutron scattering (INS) experiments have been performed on CeMIn5 with M = Rh, Ir, and Co to determine the crystal-field scheme and characteristic Kondo temperatures T* for the…

Resonant soft X-ray scattering (RSXS) is a powerful technique for probing both spatial and electronic structures within solid-state systems. We present a newly developed RSXS capability at beamline 13-3 of the Stanford Synchrotron Radiation…

We use angle-resolved photoemission spectroscopy to study heavy fermion superconductor Ce2RhIn8. The Fermi surface is rather complicated and consists of several hole and electron pock- ets. We do not observe kz dispersion of Fermi sheets,…

Strongly Correlated Electrons · Physics 2017-03-21 Rui Jiang , Daixiang Mou , Chang Liu , Xin Zhao , Yongxin Yao , Hyejin Ryu , C. Petrovic , Kai-Ming Ho , Adam Kaminski

The evolution from 3rd to 4th generation synchrotron radiation (SR) sources significantly enhanced their coherence, making coherent scattering techniques such as coherent X-ray diffraction imaging (CXDI) and X-ray photon correlation…

Accelerator Physics · Physics 2021-10-20 Han Xu , Zhongzhu Zhu , Peng Liu , Yuhui Dong , Liang Zhou

The three-dimensional electronic structure and Ce 4f electrons of the heavy fermion superconductor CePt2In7 is investigated. Angle-resolved photoemission spectroscopy using variable photon energy establishes the existence of quasi-two and…

We have measured soft x-ray photoemission and O 1{\it s} x-ray absorption spectra of Ca$_{1-x}$Sr$_x$RuO$_3$ thin films prepared {\it in situ}. The coherent and incoherent parts have been identified in the bulk component of the…

Strongly Correlated Electrons · Physics 2009-11-10 M. Takizawa , D. Toyota , H. Wadati , A. Chikamatsu , H. Kumigashira , A. Fujimori , M. Oshima , Z. Fang , M. Lippmaa , M. Kawasaki , H. Koinuma
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