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pro vyhledávání: '"Fernando, G. W."'
Autor:
Yilmaz, T., Geilhufe, R. M., Pletikosić, I., Fernando, G. W., Cava, R. J., Valla, T., Vescovo, E., Sinkovic, B.
In the present work, we investigate the electronic structure of the two-dimensional (2D) ferromagnet Cr2Ge2Te6 by photoemission spectroscopy and ab initio calculations. Our results demonstrate the presence of multiple hole-type bands in the vicinity
Externí odkaz:
http://arxiv.org/abs/2010.14832
There is growing evidence that the unconventional spatial inhomogeneities in the doped high-Tc superconductors are accompanied by the pairing of electrons, subsequent quantum phase transitions (QPTs), and condensation in coherent states. We show that
Externí odkaz:
http://arxiv.org/abs/1209.6311
Spontaneous phase separation instabilities with the formation of various types of charge and spin pairing (pseudo)gaps in $U>0$ Hubbard model including the {\it next nearest neighbor coupling} are calculated with the emphasis on the two-dimensional (
Externí odkaz:
http://arxiv.org/abs/1205.3202
Publikováno v:
J. Phys.: Condens. Matter 25 205601 (2013)
Nematicity is a well known property of liquid crystals and has been recently discussed in the context of strongly interacting electrons. An electronic nematic phase has been seen by many experiments in certain strongly correlated materials, in partic
Externí odkaz:
http://arxiv.org/abs/1205.2928
Publikováno v:
Physics Letters A 373 (2009) 1074-1082
Exact calculations of collective excitations and charge/spin (pseudo)gaps in an ensemble of bipartite and nonbipartite clusters yield level crossing degeneracies, spin-charge separation, condensation and recombination of electron charge and spin, dri
Externí odkaz:
http://arxiv.org/abs/0903.2586
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Electron pairing and ferromagnetism in various cluster geometries are studied with emphasis on tetrahedron and square pyramid under variation of interaction strength, electron doping and temperature. These exact calculations of charge and spin collec
Externí odkaz:
http://arxiv.org/abs/0804.0958
We present an approach to calculate total energies of nanoclusters based on first principles estimates. For very large clusters the total energy can be separated into surface, edge and corner energies, in addition to bulk contributions. Using this se
Externí odkaz:
http://arxiv.org/abs/0801.0435
The exact numerical diagonalization and thermodynamics in an ensemble of small Hubbard clusters in the ground state and finite temperatures reveal intriguing insights into the nascent charge and spin pairings, Bose condensation and ferromagnetism in
Externí odkaz:
http://arxiv.org/abs/cond-mat/0701022
Exact thermal studies of small (4-site, 5-site and 8-site) Hubbard clusters with local electron repulsion yield intriguing insight into phase separation, charge-spin separation, pseudogaps, condensation, in particular, pairing fluctuations away from
Externí odkaz:
http://arxiv.org/abs/cond-mat/0608579