Strong Electron Correlations Determine Energetic Stability and Electronic Properties of Er-Doped Goldberg-Type Silicon Quantum Dots

2009 ◽  
Vol 113 (36) ◽  
pp. 15964-15968 ◽  
Author(s):  
Pavel V. Avramov ◽  
Dmitri G. Fedorov ◽  
Stephan Irle ◽  
Alexander A. Kuzubov ◽  
Keiji Morokuma
Keyword(s):  
Quantum Dots ◽  
Electronic Properties ◽  
Electron Correlations ◽  
Silicon Quantum Dots ◽  
Strong Electron ◽  
Strong Electron Correlations ◽  
Type Silicon ◽  
Energetic Stability ◽  
Er Doped

scholarly journals Strong electron correlations stabilize paramagnetic cubic Cr1−xAlxN solid solutions

2013 ◽  
Vol 102 (3) ◽  
pp. 031910 ◽  
Author(s):  
B. Alling ◽  
L. Hultberg ◽  
L. Hultman ◽  
I. A. Abrikosov
Keyword(s):  
Solid Solutions ◽  
Electron Correlations ◽  
Strong Electron ◽  
Strong Electron Correlations

Tuning of Spin Density Wave Strengths in Quasi-One-Dimensional Halogen-Bridged NiIIIComplexes with Strong Electron Correlations, [NiIII(chxn)2X]Y2

1999 ◽  
Vol 38 (8) ◽  
pp. 1894-1899 ◽  
Author(s):  
Masahiro Yamashita ◽  
Toshio Manabe ◽  
Kazuo Inoue ◽  
Takuya Kawashima ◽  
Hiroshi Okamoto ◽  
...  
Keyword(s):  
Spin Density ◽  
Density Wave ◽  
Spin Density Wave ◽  
Electron Correlations ◽  
Strong Electron ◽  
One Dimensional ◽  
Strong Electron Correlations

Effects of strong electron correlations in Ti8C12 Met-Car

2006 ◽  
Vol 326 (1) ◽  
pp. 97-106 ◽  
Author(s):  
Sergey A. Varganov ◽  
Mark S. Gordon
Keyword(s):  
Electron Correlations ◽  
Strong Electron ◽  
Strong Electron Correlations

Specific features of the electronic structure and optical spectra of nanoparticles with strong electron correlations

2007 ◽  
Vol 49 (6) ◽  
pp. 1116-1120 ◽  
Author(s):  
S. G. Ovchinnikov ◽  
B. A. Gizhevskiĭ ◽  
Yu. P. Sukhorukov ◽  
A. E. Ermakov ◽  
M. A. Uĭmin ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Optical Spectra ◽  
Electron Correlations ◽  
Strong Electron ◽  
Strong Electron Correlations

scholarly journals Superconductivity in chromium nitrides Pr3Cr10-xN11 with strong electron correlations

2019 ◽  
Vol 7 (1) ◽  
pp. 21-26 ◽  
Author(s):  
Wei Wu ◽  
Kai Liu ◽  
Yanjie Li ◽  
Zhenhai Yu ◽  
Desheng Wu ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Lattice Structure ◽  
Upper Critical Field ◽  
Pairing Symmetry ◽  
Electron Correlations ◽  
Strong Electron ◽  
Strong Electron Correlations ◽  
Chromium Nitrides ◽  
Structure Calculations ◽  
Specific Pairing

Abstract Exploration of superconductivity in Cr-based compounds has attracted considerable interest because only a few Cr-based superconductors (CrAs, A2Cr3As3 and ACr3As3 (A = K, Rb, Cs, Na)) have been discovered so far and they show an unconventional pairing mechanism. We report the discovery of bulk superconductivity at 5.25 K in chromium nitride in Pr3Cr10-xN11 with a cubic lattice structure. A relatively large upper critical field of Hc2(0) ∼ 12.6 T is determined, which is larger than the estimated Pauli-paramagnetic pair-breaking magnetic field. The material has a large electronic specific-heat coefficient of 170 mJ K−2 mol−1—about 10 times larger than that estimated by the electronic structure calculation, which suggests that correlations between 3d electrons are very strong in Pr3Cr10-xN11, and thus quantum fluctuations might be involved. Electronic structure calculations show that the density of states at the Fermi energy are contributed predominantly by Cr 3d electrons, implying that the superconductivity results mainly from the condensation of Cr 3d electrons. Pr3Cr10-xN11 represents a rare example of possible unconventional superconductivity emerging in a 3D system with strong electron correlations. Nevertheless, clarification of the specific pairing symmetry needs more investigation.

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