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Recent ARPES measurement on electron-doped cuprate $\mathrm{Pr}_{1.3-x}\mathrm{La}_{0.7}\mathrm{Ce}_{x}\mathrm{CuO}_{4}$ finds that the pseudogap along the boundary of the antiferromagnetic Brillouin zone(AFBZ) exhibits dramatic momentum…

Strongly Correlated Electrons · Physics 2021-07-28 Tao Li , Da-Wei Yao

We performed a combined angle-resolved photoemission spectroscopy and scanning tunneling microscopy study of the electronic structure of electron-doped Ca$_{0.83}$La$_{0.17}$Fe$_2$As$_2$. A surface reconstruction associated with the…

Superconductivity · Physics 2013-01-08 Y. -B. Huang , P. Richard , J. -H. Wang , X. -P. Wang , X. Shi , N. Xu , Z. Wu , A. Li , J. -X. Yin , T. Qian , B. Lv , C. W. Chu , S. H. Pan , M. Shi , H. Ding

We use angle-resolved photoemission to study the three dimensional (3D) electronic structure of Co pnictides ACo2As2 with A=Ba, Sr, Ca or a mixture of Sr and Ca. These compounds are isostructural to Fe based superconductors, but have one…

Strongly Correlated Electrons · Physics 2017-01-04 Joseph Mansart , Patrick Le Fevre , Francois Bertran , Anne Forget , Dorothee Colson , Veronique Brouet

We report the high-resolution angle-resolved photoemission spectroscopy studies of electronic structure of EuFe2As2. The paramagnetic state data are found to be consistent with density-functional calculations. In the antiferromagnetic…

Heusler compounds are promising materials for spintronics with adjustable electronic properties including 100% spin polarization at the Fermi energy. We investigate the electronic states of AlOx capped epitaxial thin films of the…

The characteristic features of the renormalization of the electrons in the bilayer cuprate superconductors are investigated within the kinetic-energy driven superconductivity. It is shown that the quasiparticle excitation spectrum is split…

Superconductivity · Physics 2020-06-16 Yiqun Liu , Yu Lan , Yingping Mou , Shiping Feng

We present Angle-Resolved Photoemission Spectroscopy measurements of the quasi-one dimensional superconductor K$_2$Cr$_3$As$_3$. We find that the Fermi surface contains two Fermi surface sheets, with linearly dispersing bands not displaying…

The contribution of bulk and surface to the electrical resistance along crystallographic \textit{b}- and \textit{c}-axes as a function of crystal thickness gives evidence for a temperature independent surface states in an antiferromagnetic…

Materials Science · Physics 2020-10-21 Qianheng Du , Huixia Fu , Junzhang Ma , A. Chikina , M. Radovic , Binghai Yan , C. Petrovic

We explore the interplay of electron-electron correlations and spin-orbit coupling in the model Fermi liquid Sr2RuO4 using laser-based angle-resolved photoemission spectroscopy. Our precise measurement of the Fermi surface confirms the…

The electronic structure of Na2Ti2Sb2O, a parent compound of the newly discovered titanium-based oxypnictide superconductors, is studied by photon energy and polarization dependent angle-resolved photoemission spectroscopy (ARPES). The…

Superconductivity · Physics 2015-05-11 S. Y. Tan , J. Jiang , Z. R. Ye , X. H. Niu , Y. Song , C. L. Zhang , P. C. Dai , B. P. Xie , X. C. Lai , D. L. Feng

The electronic band structure of GaTe has been calculated by numerical atomic orbitals density-functional theory, in the local density approximation. In addition, the valence-band dispersion along various directions of the GaTe Brillouin…

We have addressed the possibility of surface ferromagnetism in Sr2RuO4 by investigating its surface electronic states by angle-resolved photoemission spectroscopy (ARPES). By cleaving samples under different conditions and using various…

In the present work the multiband p-d model for $CuO_2$-layer is treated. It was shown that for the realistic set of parameters besides Zhang-Rice two-particle singlet there is non-negligible contribution of two-particle triplet state to…

Strongly Correlated Electrons · Physics 2009-09-29 Maxim M. Korshunov , Sergei G. Ovchinnikov , Alexei V. Sherman

We report on experimental data of the three-dimensional bulk Fermi surfaces of the layered strongly correlated Ca1.5Sr0.5RuO4 system. The measurements have been performed by means of hn-depndent bulk-sensitive soft x-ray angle-resolved…

Strongly Correlated Electrons · Physics 2007-11-15 M. Uruma , A. Sekiyama , H. Fujiwara , M. Yano , H. Fujita , S. Imada , T. Muro , I. A. Nekrasov , Y. Maeno , S. Suga

We report inelastic neutron scattering experiments in Ca2Y2Cu5O10 and map out the full one magnon dispersion which extends up to a record value of 53 meV for frustrated ferromagnetic (FM) edge-sharing CuO2 chain (FFESC) cuprates. A…

Strongly Correlated Electrons · Physics 2019-10-09 M. Matsuda , J. Ma , V. O. Garlea , T. Ito , H. Yamaguchi , K. Oka , S. -L. Drechsler , R. Yadav , L. Hozoi , H. Rosner , R. Schumann , R. O. Kuzian , S. Nishimoto

Revealing the fine electronic structure is critical for understanding the underlying physics of low-dimensional materials. Angle-resolved photoemission spectroscopy (ARPES) is a powerful experimental technique for mapping out the…

Mesoscale and Nanoscale Physics · Physics 2024-04-09 Haoyuan Zhong , Changhua Bao , Tianyun Lin , Fei Wang , Xuanxi Cai , Pu Yu , Shuyun Zhou

We report on the results of a high-resolution angle-resolved photoemission (ARPES) study on the ordered surface alloy CePt5. The temperature dependence of the spectra show the formation of the coherent low-energy heavy-fermion band near the…

Strongly Correlated Electrons · Physics 2015-05-27 M. Klein , A. Nuber , H. Schwab , N. Tobita , M. Higashiguchi , J. Jiang , S. Fukuda , K. Tanaka , K. Shimada , M. Mulazzi , F. F. Assaad , F. Reinert

The angle-resolved photoemission spectroscopy (ARPES) autocorrelation in the electron-doped cuprate superconductors is studied based on the kinetic-energy driven superconducting (SC) mechanism. It is shown that the strong electron…

Superconductivity · Physics 2021-01-14 Shuning Tan , Yingping Mou , Yiqun Liu , Shiping Feng

Electronic structure of high-temperature superconducting cuprates is studied by analyzing experimental data independently obtained from two complementary spectroscopies, one, quasiparticle interference (QPI) measured by scanning-tunneling…

Scanning tunneling spectroscopy of the high-Tc superconductor Bi2Sr2CaCu2O8+d reveals weak, incommensurate, spatial modulations in the tunneling conductance. Images of these energy-dependent modulations are Fourier analyzed to yield the…

Superconductivity · Physics 2009-11-07 J. E. Hoffman , K. McElroy , D. -H. Lee , K. M Lang , H. Eisaki , S. Uchida , J. C. Davis