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Qi B, Zhang L, Ge L. Defect States Emerging from a Non-Hermitian Flatband of Photonic Zero Modes. PHYSICAL REVIEW LETTERS 2018; 120:093901. [PMID: 29547321 DOI: 10.1103/physrevlett.120.093901] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Indexed: 06/08/2023]
Abstract
We show the existence of a flatband consisting of photonic zero modes in a gain and loss modulated lattice system as a result of the underlying non-Hermitian particle-hole symmetry. This general finding explains the previous observation in parity-time symmetric systems where non-Hermitian particle-hole symmetry is hidden. We further discuss the defect states in these systems, whose emergence can be viewed as an unconventional alignment of a pseudospin under the influence of a complex-valued pseudomagnetic field. These defect states also behave as a chain with two types of links, one rigid in a unit cell and one soft between unit cells, as the defect states become increasingly localized with the gain and loss strength.
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Affiliation(s)
- Bingkun Qi
- Department of Engineering Science and Physics, College of Staten Island, CUNY, Staten Island, New York 10314, USA
- The Graduate Center, CUNY, New York, New York 10016, USA
| | - Lingxuan Zhang
- Department of Engineering Science and Physics, College of Staten Island, CUNY, Staten Island, New York 10314, USA
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China
| | - Li Ge
- Department of Engineering Science and Physics, College of Staten Island, CUNY, Staten Island, New York 10314, USA
- The Graduate Center, CUNY, New York, New York 10016, USA
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2
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López-González D, Molina MI. Compact modes in quasi one dimensional coupled magnetic oscillators. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:475801. [PMID: 28976358 DOI: 10.1088/1361-648x/aa90f0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this work we study analytically and numerically the spectrum and localization properties of three quasi-one-dimensional (ribbons) split-ring resonator arrays which possess magnetic flatbands, namely, the stub, Lieb and kagome lattices, and how their spectra are affected by the presence of perturbations that break the delicate geometrical interference needed for a magnetic flatband to exist. We find that the stub and Lieb ribbons are stable against the three types of perturbations considered here, while the kagome ribbon is, in general, unstable. When losses are incorporated, all flatbands remain dispersionless but become complex, with the kagome ribbon exhibiting the highest loss rate. The stability of flatband modes of certain split-ring resonator arrays suggests that they could be used as components of future stable magnetic storage devices.
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Affiliation(s)
- Dany López-González
- Department of Physics, MSI-Nucleus on Advanced Optics, Faculty of Sciences, University of Chile, Santiago, Chile
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3
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Cheng X, Gordon EE, Whangbo MH, Deng S. Superconductivity Induced by Oxygen Doping in Y 2 O 2 Bi. Angew Chem Int Ed Engl 2017; 56:10123-10126. [PMID: 28370785 DOI: 10.1002/anie.201701427] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/12/2017] [Indexed: 11/09/2022]
Abstract
When doped with oxygen, the layered Y2 O2 Bi phase becomes a superconductor. This finding raises questions about the sites for doped oxygen, the mechanism of superconductivity, and practical guidelines for discovering new superconductors. We probed these questions in terms of first-principles calculations for undoped and O-doped Y2 O2 Bi. The preferred sites for doped O atoms are the centers of Bi4 squares in the Bi square net. Several Bi 6p x/y bands of Y2 O2 Bi are raised in energy by oxygen doping because the 2p x/y orbitals of the doped oxygen make antibonding possible with the 6p x/y orbitals of surrounding Bi atoms. Consequently, the condition necessary for the "flat/steep" band model for superconductivity is satisfied in O-doped Y2 O2 Bi.
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Affiliation(s)
- Xiyue Cheng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter (FJIRSM), Chinese Academy of Sciences (CAS), Fuzhou, 350002, China
| | - Elijah E Gordon
- Department of Chemistry, North Carolina State University, Raleigh, NC, 27695-8204, USA
| | - Myung-Hwan Whangbo
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter (FJIRSM), Chinese Academy of Sciences (CAS), Fuzhou, 350002, China.,Department of Chemistry, North Carolina State University, Raleigh, NC, 27695-8204, USA
| | - Shuiquan Deng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter (FJIRSM), Chinese Academy of Sciences (CAS), Fuzhou, 350002, China
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4
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Cheng X, Gordon EE, Whangbo M, Deng S. Superconductivity Induced by Oxygen Doping in Y
2
O
2
Bi. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiyue Cheng
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter (FJIRSM) Chinese Academy of Sciences (CAS) Fuzhou 350002 China
| | - Elijah E. Gordon
- Department of Chemistry North Carolina State University Raleigh NC 27695-8204 USA
| | - Myung‐Hwan Whangbo
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter (FJIRSM) Chinese Academy of Sciences (CAS) Fuzhou 350002 China
- Department of Chemistry North Carolina State University Raleigh NC 27695-8204 USA
| | - Shuiquan Deng
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter (FJIRSM) Chinese Academy of Sciences (CAS) Fuzhou 350002 China
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5
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Majumdar A, Tse JS, Yao Y. Modulated Structure Calculated for Superconducting Hydrogen Sulfide. Angew Chem Int Ed Engl 2017; 56:11390-11393. [DOI: 10.1002/anie.201704364] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Arnab Majumdar
- Department of Physics and Engineering Physics; University of Saskatchewan; Saskatoon SK S7N 5E2 Canada
| | - John S. Tse
- Department of Physics and Engineering Physics; University of Saskatchewan; Saskatoon SK S7N 5E2 Canada
| | - Yansun Yao
- Department of Physics and Engineering Physics; University of Saskatchewan; Saskatoon SK S7N 5E2 Canada
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6
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Majumdar A, Tse JS, Yao Y. Modulated Structure Calculated for Superconducting Hydrogen Sulfide. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704364] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Arnab Majumdar
- Department of Physics and Engineering Physics; University of Saskatchewan; Saskatoon SK S7N 5E2 Canada
| | - John S. Tse
- Department of Physics and Engineering Physics; University of Saskatchewan; Saskatoon SK S7N 5E2 Canada
| | - Yansun Yao
- Department of Physics and Engineering Physics; University of Saskatchewan; Saskatoon SK S7N 5E2 Canada
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7
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Kurzydłowski D, Grochala W. Prediction of Extremely Strong Antiferromagnetic Superexchange in Silver(II) Fluorides: Challenging the Oxocuprates(II). Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700932] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Dominik Kurzydłowski
- Center of New Technologies; University of Warsaw; Banacha 2c 02097 Warsaw Poland
- Faculty of Mathematics and Natural Sciences; Cardinal Stefan Wyszyński University in Warsaw; Wóycickiego 1/3 01938 Warsaw Poland
| | - Wojciech Grochala
- Center of New Technologies; University of Warsaw; Banacha 2c 02097 Warsaw Poland
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8
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Kurzydłowski D, Grochala W. Prediction of Extremely Strong Antiferromagnetic Superexchange in Silver(II) Fluorides: Challenging the Oxocuprates(II). Angew Chem Int Ed Engl 2017; 56:10114-10117. [DOI: 10.1002/anie.201700932] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 04/19/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Dominik Kurzydłowski
- Center of New Technologies; University of Warsaw; Banacha 2c 02097 Warsaw Poland
- Faculty of Mathematics and Natural Sciences; Cardinal Stefan Wyszyński University in Warsaw; Wóycickiego 1/3 01938 Warsaw Poland
| | - Wojciech Grochala
- Center of New Technologies; University of Warsaw; Banacha 2c 02097 Warsaw Poland
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9
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Bi T, Miller DP, Shamp A, Zurek E. Superconducting Phases of Phosphorus Hydride Under Pressure: Stabilization by Mobile Molecular Hydrogen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701660] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tiange Bi
- Department of Chemistry State University of New York at Buffalo Buffalo NY 14260-3000 USA
| | - Daniel P. Miller
- Department of Chemistry State University of New York at Buffalo Buffalo NY 14260-3000 USA
| | - Andrew Shamp
- Department of Chemistry State University of New York at Buffalo Buffalo NY 14260-3000 USA
| | - Eva Zurek
- Department of Chemistry State University of New York at Buffalo Buffalo NY 14260-3000 USA
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10
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Bi T, Miller DP, Shamp A, Zurek E. Superconducting Phases of Phosphorus Hydride Under Pressure: Stabilization by Mobile Molecular Hydrogen. Angew Chem Int Ed Engl 2017; 56:10192-10195. [DOI: 10.1002/anie.201701660] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Tiange Bi
- Department of Chemistry State University of New York at Buffalo Buffalo NY 14260-3000 USA
| | - Daniel P. Miller
- Department of Chemistry State University of New York at Buffalo Buffalo NY 14260-3000 USA
| | - Andrew Shamp
- Department of Chemistry State University of New York at Buffalo Buffalo NY 14260-3000 USA
| | - Eva Zurek
- Department of Chemistry State University of New York at Buffalo Buffalo NY 14260-3000 USA
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Guo K, Akselrud L, Bobnar M, Burkhardt U, Schmidt M, Zhao JT, Schwarz U, Grin Y. Schwache Wechselwirkungen unter Druck: hp
-CuBi und seine Analoga. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700712] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kai Guo
- School of Materials Science and Engineering; Shanghai University; China
- Chemische Metallkunde; Max-Planck-Institut für Chemische Physik fester Stoffe; 01187 Dresden Deutschland
| | - Lev Akselrud
- Chemische Metallkunde; Max-Planck-Institut für Chemische Physik fester Stoffe; 01187 Dresden Deutschland
| | - Matej Bobnar
- Chemische Metallkunde; Max-Planck-Institut für Chemische Physik fester Stoffe; 01187 Dresden Deutschland
| | - Ulrich Burkhardt
- Chemische Metallkunde; Max-Planck-Institut für Chemische Physik fester Stoffe; 01187 Dresden Deutschland
| | - Marcus Schmidt
- Chemische Metallkunde; Max-Planck-Institut für Chemische Physik fester Stoffe; 01187 Dresden Deutschland
| | - Jing-Tai Zhao
- School of Materials Science and Engineering; Shanghai University; China
- State Key Laboratory of Advanced Special Steel; Shanghai University; China
| | - Ulrich Schwarz
- Chemische Metallkunde; Max-Planck-Institut für Chemische Physik fester Stoffe; 01187 Dresden Deutschland
| | - Yuri Grin
- Chemische Metallkunde; Max-Planck-Institut für Chemische Physik fester Stoffe; 01187 Dresden Deutschland
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12
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Guo K, Akselrud L, Bobnar M, Burkhardt U, Schmidt M, Zhao JT, Schwarz U, Grin Y. Weak Interactions under Pressure: hp
-CuBi and Its Analogues. Angew Chem Int Ed Engl 2017; 56:5620-5624. [DOI: 10.1002/anie.201700712] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Kai Guo
- School of Materials Science and Engineering; Shanghai University; China
- Chemische Metallkunde; Max-Planck-Institut für Chemische Physik fester Stoffe; 01187 Dresden Germany
| | - Lev Akselrud
- Chemische Metallkunde; Max-Planck-Institut für Chemische Physik fester Stoffe; 01187 Dresden Germany
| | - Matej Bobnar
- Chemische Metallkunde; Max-Planck-Institut für Chemische Physik fester Stoffe; 01187 Dresden Germany
| | - Ulrich Burkhardt
- Chemische Metallkunde; Max-Planck-Institut für Chemische Physik fester Stoffe; 01187 Dresden Germany
| | - Marcus Schmidt
- Chemische Metallkunde; Max-Planck-Institut für Chemische Physik fester Stoffe; 01187 Dresden Germany
| | - Jing-Tai Zhao
- School of Materials Science and Engineering; Shanghai University; China
- State Key Laboratory of Advanced Special Steel; Shanghai University; China
| | - Ulrich Schwarz
- Chemische Metallkunde; Max-Planck-Institut für Chemische Physik fester Stoffe; 01187 Dresden Germany
| | - Yuri Grin
- Chemische Metallkunde; Max-Planck-Institut für Chemische Physik fester Stoffe; 01187 Dresden Germany
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13
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Molina MI. Flat bands and PTsymmetry in quasi-one-dimensional lattices. PHYSICAL REVIEW A 2015; 92:063813. [DOI: 10.1103/physreva.92.063813] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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14
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Pecher O, Mausolf B, Lamberts K, Oligschläger D, Niewieszol (née Merkens) C, Englert U, Haarmann F. The Solid Solution Sr
1−
x
Ba
x
Ga
2
: Substitutional Disorder and Chemical Bonding Visited by NMR Spectroscopy and Quantum Mechanical Calculations. Chemistry 2015; 21:13971-82. [DOI: 10.1002/chem.201501910] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Oliver Pecher
- RWTH Aachen University, Institut für Anorganische Chemie (IAC), Landoltweg 1, 52074 Aachen (Germany)
- Max‐Planck‐Institut für Chemische Physik fester Stoffe (MPI CPfS), Nöthnitzer Straße 40, 01187 Dresden (Germany)
- Present address: University of Cambridge, Department of Chemistry, Lensfield Road CB2 1EW, Cambridge (UK)
| | - Bernhard Mausolf
- RWTH Aachen University, Institut für Anorganische Chemie (IAC), Landoltweg 1, 52074 Aachen (Germany)
| | - Kevin Lamberts
- RWTH Aachen University, Institut für Anorganische Chemie (IAC), Landoltweg 1, 52074 Aachen (Germany)
| | - Dirk Oligschläger
- RWTH Aachen University, Institut für Anorganische Chemie (IAC), Landoltweg 1, 52074 Aachen (Germany)
| | | | - Ulli Englert
- RWTH Aachen University, Institut für Anorganische Chemie (IAC), Landoltweg 1, 52074 Aachen (Germany)
| | - Frank Haarmann
- RWTH Aachen University, Institut für Anorganische Chemie (IAC), Landoltweg 1, 52074 Aachen (Germany)
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Boldt R, Grigas A, Heise M, Herrmannsdörfer T, Isaeva A, Kaskel S, Köhler D, Ruck M, Skrotzki R, Wosnitza J. Semimetallic Paramagnetic Nano-Bi2Ir and Superconducting Ferromagnetic Nano-Bi3Ni by Microwave-Assisted Synthesis and Room Temperature Pseudomorphosis. Z Anorg Allg Chem 2012. [DOI: 10.1002/zaac.201200125] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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16
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Ahmed E, Beck J, Daniels J, Doert T, Eck SJ, Heerwig A, Isaeva A, Lidin S, Ruck M, Schnelle W, Stankowski A. Halbleiter oder eindimensionales Metall und Supraleiter durch Tellur-π-Stapelung. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200895] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Ahmed E, Beck J, Daniels J, Doert T, Eck SJ, Heerwig A, Isaeva A, Lidin S, Ruck M, Schnelle W, Stankowski A. A Semiconductor or A One-Dimensional Metal and Superconductor through Tellurium π Stacking. Angew Chem Int Ed Engl 2012; 51:8106-9. [DOI: 10.1002/anie.201200895] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Revised: 04/19/2012] [Indexed: 11/07/2022]
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18
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Simon A. Oxidation durch Wasserstoff in der Chemie und Physik der Seltenerdmetalle. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108558] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Simon A. Oxidation by Hydrogen in the Chemistry and Physics of the Rare-Earth Metals. Angew Chem Int Ed Engl 2012; 51:4280-6. [DOI: 10.1002/anie.201108558] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Indexed: 11/10/2022]
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20
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Weihrich R, Matar S, Anusca I, Pielnhofer F, Peter P, Bachhuber F, Eyert V. Palladium site ordering and the occurrence of superconductivity in Bi2Pd3Se2−xSx. J SOLID STATE CHEM 2011. [DOI: 10.1016/j.jssc.2011.01.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Seidlmayer S, Bachhuber F, Anusca I, Rothballer J, Bräu M, Peter P, Weihrich R. Half antiperovskites: V. Systematics in ordering and group-subgroup-relations for Pb2Pd3Se2, Bi2Pd3Se2, and Bi2Pd3S2. ACTA ACUST UNITED AC 2010. [DOI: 10.1524/zkri.2010.1272] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Scherer W, Hauf C, Presnitz M, Scheidt EW, Eickerling G, Eyert V, Hoffmann RD, Rodewald U, Hammerschmidt A, Vogt C, Pöttgen R. Supraleitung in quasi-eindimensionalen Carbiden. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200904956] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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23
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Scherer W, Hauf C, Presnitz M, Scheidt EW, Eickerling G, Eyert V, Hoffmann RD, Rodewald U, Hammerschmidt A, Vogt C, Pöttgen R. Superconductivity in Quasi One-Dimensional Carbides. Angew Chem Int Ed Engl 2010; 49:1578-82. [DOI: 10.1002/anie.200904956] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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Deng S, Simon A, Köhler J. Calcium d States: Chemical Bonding of CaC6. Angew Chem Int Ed Engl 2008; 47:6703-6. [DOI: 10.1002/anie.200801985] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Johrendt D, Pöttgen R. Pnictide Oxides: A New Class of High-TC Superconductors. Angew Chem Int Ed Engl 2008; 47:4782-4. [DOI: 10.1002/anie.200801818] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Kim SJ, Ponou S, Fässler TF. Cation substitution effects in the system Sr2-xBaxBi3 (0 < or = x < or = 1.3): structural distortions induced by chemical pressure. Inorg Chem 2008; 47:3594-602. [PMID: 18361487 DOI: 10.1021/ic7019439] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Crystals of the composition Sr(2-x)Ba(x)Bi(3) (0 < or = x < or = 1.3) have been synthesized from the elements and were characterized by single-crystal and powder X-ray diffraction methods. The compounds crystallize for x = 0, 0.45, 0.86, 1.08, 1.28 in the structure type of the parent compound Sr 2Bi 3 with space group Pnna (No. 52) and Z = 4. Substitution of Sr by Ba leads to a site preference for Ba. The anionic Bi substructures in the pseudoternary system simultaneously distort under remarkable elongation of one distinct Bi-Bi contact. Magnetic measurements for samples with x = 0, 0.45 and 1.08 reveal superconducting transitions at low temperatures. Linear muffin-tin orbital band structure calculations of Sr(2)Bi(3) show strong cation-anion interactions that greatly stabilize the structure. Besides showing characteristics of a typical metal, the band structure plot unveils the co-instantaneous occurrence of flat and steep bands around the Fermi level indicative for superconductivity.
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Affiliation(s)
- Sung-Jin Kim
- Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, Garching, Germany
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Yang J, Tse J, Yao Y, Iitaka T. Structural and Electronic Properties of Pristine and Ba-Doped Clathrate-Like Carbon Fullerenes. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200701555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Yang J, Tse JS, Yao Y, Iitaka T. Structural and electronic properties of pristine and Ba-doped clathrate-like carbon fullerenes. Angew Chem Int Ed Engl 2007; 46:6275-7. [PMID: 17634991 DOI: 10.1002/anie.200701555] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jianjun Yang
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, S7N 5E2, Canada.
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Simon A, Babizhetskyy V, Oeckler O, Mattausch H, Bauer J, Kremer RK. Kristall- und Realstrukturuntersuchungen zur wiederkehrenden Supraleitung in ?La5B2C6? Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200400356] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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31
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Siegfried-Medaille für Joel M. Hawkins / Arndt Simon erhält Liebig-Denkmünze / Lutz F. Tietze erhält Emil-Fischer-Medaille. Angew Chem Int Ed Engl 2004. [DOI: 10.1002/ange.200462060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Siegfried Medal Awarded to Joel M. Hawkins / Arndt Simon Receives Liebig Medal / Lutz F. Tietze Is Awarded the Emil Fischer Medal. Angew Chem Int Ed Engl 2004; 43:5568. [PMID: 15495220 DOI: 10.1002/anie.200462060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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