Continuous metal-insulator transition in the pyrochloreCd2Os2O7

2001 ◽  
Vol 63 (19) ◽  
Author(s):  
D. Mandrus ◽  
J. R. Thompson ◽  
R. Gaal ◽  
L. Forro ◽  
J. C. Bryan ◽  
...  
Keyword(s):  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Continuous Metal

scholarly journals Continuous metal-insulator transition of the antiferromagnetic perovskiteNaOsO3

2009 ◽  
Vol 80 (16) ◽  
Author(s):  
Y. G. Shi ◽  
Y. F. Guo ◽  
S. Yu ◽  
M. Arai ◽  
A. A. Belik ◽  
...  
Keyword(s):  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Continuous Metal

scholarly journals Quantum critical magnetotransport at a continuous metal-insulator transition

2017 ◽  
Vol 96 (15) ◽  
Author(s):  
P. Haldar ◽  
M. S. Laad ◽  
S. R. Hassan ◽  
Madhavi Chand ◽  
Pratap Raychaudhuri
Keyword(s):  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Quantum Critical ◽  
Continuous Metal

scholarly journals A continuous metal-insulator transition driven by spin correlations

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yejun Feng ◽  
Yishu Wang ◽  
D. M. Silevitch ◽  
S. E. Cooper ◽  
D. Mandrus ◽  
...  
Keyword(s):  
Degrees Of Freedom ◽  
Domain Walls ◽  
Spin Correlation ◽  
Energy Scale ◽  
Insulator Transition ◽  
Mott Insulators ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Spin Correlations ◽  
Continuous Metal

AbstractWhile Mott insulators induced by Coulomb interactions are a well-recognized class of metal-insulator transitions, insulators purely driven by spin correlations are much less common, as the reduced energy scale often invites competition from other degrees of freedom. Here, we demonstrate a clean example of a spin-correlation-driven metal-insulator transition in the all-in-all-out pyrochlore antiferromagnet Cd2Os2O7, where the lattice symmetry is preserved by the antiferromagnetism. After the antisymmetric linear magnetoresistance from conductive, ferromagnetic domain walls is removed experimentally, the bulk Hall coefficient reveals four Fermi surfaces of both electron and hole types, sequentially departing the Fermi level with decreasing temperature below the Néel temperature, TN = 227 K. In Cd2Os2O7, the charge gap of a continuous metal-insulator transition opens only at T ~ 10 K << TN. The insulating mechanism parallels the Slater picture, but without a folded Brillouin zone, and contrasts sharply with Mott insulators and spin density waves, where the electronic gap opens above and at TN, respectively.

Fermi-surface reconstruction close to a pressure-induced metal-insulator transition

2004 ◽  
Vol 114 ◽  
pp. 277-281 ◽  
Author(s):  
J. Wosnitza ◽  
J. Hagel ◽  
O. Stockert ◽  
C. Pfleiderer ◽  
J. A. Schlueter ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Surface Reconstruction ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Fermi Surface Reconstruction
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