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Related papers: Bulk-like d band of SrVO3 under a self-protective …

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We investigate the electronic structure of Ca1-xSrxVO3 using careful state-of-the-art experiments and calculations. Photoemission spectra using synchrotron radiation reveal a hitherto unnoticed polarization dependence of the photoemission…

Strongly Correlated Electrons · Physics 2016-08-31 Kalobaran Maiti , U. Manju , Sugata Ray , Priya Mahadevan , I. H. Inoue , C. Carbone , D. D. Sarma

The bulk and surface electronic structure of MoAlB(010) is studied by a combination of angle-resolved photoemission spectroscopy and density functional calculations. The observed bulk Fermi-level crossings agree with the previously reported…

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 measured the response of the surface state spectrum of epitaxial Sb2Te3 thin films to applied gate electric fields by low temperature scanning tunneling microscopy. The gate dependent shift of the Fermi level and the screening effect…

Mesoscale and Nanoscale Physics · Physics 2014-05-07 Tong Zhang , Jeonghoon Ha , Niv Levy , Young Kuk , Joseph Stroscio

Epitaxial Ba0.5Sr0.5TiO3 thin films were prepared on Nb-doped SrTiO3 (100)substrates by the pulsed laser deposition technique, and were studied by measuring the Ti 2p - 3d resonant photoemission spectra in the valence-band region as a…

BiTeI has a layered and non-centrosymmetric structure where strong spin-orbit interaction leads to a giant spin splitting in the bulk bands. Here we present high-resolution angle-resolved photoemission (ARPES) data in the UV and soft x-ray…

We have performed scanning tunneling microscopy and differential tunneling conductance ($dI/dV$) mapping for the surface of the three dimensional topological insulator Bi$_{2}$Se$_{3}$. The fast Fourier transformation applied to the $dI/dV$…

Mesoscale and Nanoscale Physics · Physics 2011-09-30 Sunghun Kim , M. Ye , K. Kuroda , Y. Yamada , E. E. Krasovskii , E. V. Chulkov , K. Miyamoto , M. Nakatake , T. Okuda , Y. Ueda , K. Shimada , H. Namatame , M. Taniguchi , A. Kimura

The perovskite ruthenate has attracted considerable interest due to reports of possible non-Fermi-liquid behavior and its proximity to a magnetic quantum critical point, yet its ground state and electronic structure remain enigmatic. Here…

Strongly Correlated Electrons · Physics 2019-02-12 Yang Liu , Hari P. Nair , Jacob P. Ruf , Darrell G. Schlom , Kyle M. Shen

In this work, we present a model of the surface states of nonsymmorphic semimetals. These are derived from surface mass terms that lift the high degeneracy imposed in the band structure by the nonsymmorphic bulk symmetries. Reflecting the…

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 low-energy electronic structure, including the Fermi surface topology, of the itinerant metamagnet Sr$_{4}$Ru$_{3}$O$_{10}$ is investigated for the first time by synchrotron-based angle-resolved photoemission. Well-defined quasiparticle…

Previous high-resolution angle-resolved photoemission (ARPES) studies of URu$_2$Si$_2$ have characterized the temperature-dependent behavior of narrow-band states close to the Fermi level ($E_\mathrm{F}$) at low photon energies near the…

Strongly Correlated Electrons · Physics 2022-03-01 J. D. Denlinger , J. -S. Kang , L. Dudy , J. W. Allen , Kyoo Kim , J. -H. Shim , K. Haule , J. L. Sarrao , N. P. Butch , M. B. Maple

We present results from Inverse photoemission spectroscopy in the isochromat mode, with angular resolution, from the clean Au(113) surface. To identify the origin of the different resonances we have performed first principles calculations…

Materials Science · Physics 2009-10-31 Patricio Haeberle , Wladimir Ibanez , Rolando Esparza , Patricio Vargas

Complex materials encompassing different phases of matter can display new photoinduced metastable states differing from those attainable under equilibrium conditions. These states can be realized when energy is injected in the material…

Strongly Correlated Electrons · Physics 2024-06-27 Wibke Bronsch , Manuel Tuniz , Denny Puntel , Alessandro Giammarino , Fulvio Parmigiani , Yang-hao Chan , Federico Cilento

We have collected broadband spectral energy distributions (SEDs) of three BL Lac objects, 3FGL J0022.1$-$1855 (z=0.689), 3FGL J0630.9$-$2406 (z >~ 1.239), and 3FGL J0811.2$-$7529 (z=0.774), detected by Fermi with relatively flat GeV…

High Energy Astrophysical Phenomena · Physics 2016-05-25 LAT Collaboration

The electronic structure of the new superconductor, SmO$_{1-x}$F$_x$FeAs ($x=0.15$), has been studied by angle-integrated photoemission spectroscopy. Our data show a sharp feature very close to the Fermi energy, and a relative flat…

Superconductivity · Physics 2008-05-31 H. W. Ou , J. F. Zhao , Y. Zhang , D. W. Shen , B. Zhou , L. X. Yang , C. He , F. Chen , M. Xu , T. Wu , X. H. Chen , Y. Chen , D. L. Feng

We comment a recent work titled "Direct evidence for hidden one-dimensional Fermi surface of hexagonal K0.25WO3". In this paper the authors report photoemission and theoretical results on the K0.25WO3 system which led them to propose that a…

Chemical Physics · Physics 2012-03-07 Roberta Poloni , Enric Canadell , Jean Paul Pouget

We report on the observation of metallic behavior in thin films of oxygen-deficient SrTiO$_3$ - down to 9 unit cells - when coherently strained on (001) SrTiO$_3$ or DyScO$_3$-buffered (001) SrTiO$_3$ substrates. These films have carrier…

Materials Science · Physics 2016-06-06 Purnima P. Balakrishnan , Urusa S. Alaan , Matthew T. Gray , Yuri Suzuki

We investigate the electronic structure of highly conducting perovskite SrMoO$_{3}$ using valence band photoemission spectroscopy and electronic structure calculations. Large intensity corresponding to coherent feature close to Fermi level…

Strongly Correlated Electrons · Physics 2023-01-24 Asif Ali , B. H. Reddy , Ravi Shankar Singh

High resolution angle-resolved photoemission measurements have been carried out on (Sr,K)Fe$_2$As$_2$ superconductor (Tc=21 K). Three hole-like Fermi surface sheets are clearly resolved for the first time around the Gamma point. The overall…