The Resonating Valence Bond State and High-Tc Superconductivity in La2CuO4+

1987 ◽  
pp. 9-9 ◽  
Author(s):  
P. W. Anderson
Keyword(s):  
Valence Bond ◽  
High Tc ◽  
High Tc Superconductivity ◽  
Bond State ◽  
Resonating Valence Bond

THE RESONATING VALENCE BOND STATE IN HIGH Tc SUPERCONDUCTORS

2007 ◽  
Vol 21 (18n19) ◽  
pp. 3112-3117
Author(s):  
WEI GUO ◽  
XIAOGANG YIN ◽  
RUSHAN HAN
Keyword(s):  
Valence Bond ◽  
Exchange Interactions ◽  
Local Exchange ◽  
High Tc ◽  
Bond State ◽  
Spin Pairing ◽  
Resonating Valence Bond ◽  
Magnetic Origin ◽  
Proper Interpretation

As indicated by NMR experimental results, there are two types of electrons in a doped cuprate: the localized Cu3d electrons, which are responsible for magnetism, and the itinerant p-band electrons carrying the charge transports. We show that the uncompensated spins at oxygen sites created by holes can pair into a resonating valence bond (RVB) state via local exchange interactions where the quasi-free local Cu spins play a role of the mediation for spin pairing. The two-component model gives a proper interpretation of the magnetic origin of high Tc superconductivity, especially, in explanation of the cross over from the anti-ferromagnetic to the RVB state.

scholarly journals Triplet Resonating Valence Bond State and Superconductivity in Hund’s Metals

2020 ◽  
Vol 125 (7) ◽  
Author(s):  
Piers Coleman ◽  
Yashar Komijani ◽  
Elio J. König
Keyword(s):  
Valence Bond ◽  
Bond State ◽  
Resonating Valence Bond

GRASSMANNIAN APPROACH TO THE RESONATING-VALENCE-BOND STATE OF THE 2D HEISENBERG ANTIFERROMAGNET

1989 ◽  
Vol 03 (12) ◽  
pp. 925-931 ◽  
Author(s):  
YONATHAN SHAPIR ◽  
THOMAS BLUM
Keyword(s):  
Gauge Theory ◽  
Valence Bond ◽  
Heisenberg Antiferromagnet ◽  
Phase Fluctuations ◽  
Bond Yield ◽  
Bond State ◽  
Resonating Valence Bond ◽  
Grassmann Variables

A systematic representation of the resonating-valence-bond state of the 2D spin-1/2 Heisenberg antiferromagnet in terms of anticommuting Grassmann variables is derived. This representation is extended to the dilute case and the holon statistics are considered. Independent phase fluctuations on each valence-bond yield a U(1) gauge theory with low-lying gapless excitations in accordance with other approaches.

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