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28 March 2024
 
  » arxiv » 2009.12058

 Article overview


Conserved current of nonconserved quantities
Cong Xiao ; Qian Niu ;
Date 25 Sep 2020
AbstractWe provide a unified semiclassical theory for the conserved current of locally nonconserved quantities. The attained current vanishes and circulates in uniform and nonuniform equilibrium systems, respectively, thus can be used to characterize the corresponding orbital magnetization and transport of nonconserved quantities. We manifest the theory in two entirely different physical contexts: the spin transport of Bloch electrons and the charge orbital magnetization in superconductors. Several longstanding puzzles that enormously limit the playground of the conserved spin current of electrons are solved, paving the way for material related studies. A Berry phase formula is established for the orbital magnetization in unconventional pairing superconductors, consisting of both the localized and global charge circuits of bogolons.
Source arXiv, 2009.12058
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