Condensed-matter ab initio approach for strongly correlated electrons: Application to a quantum spin liquid candidate

2015 ◽  
Author(s):  
Youhei Yamaji
2013 ◽  
Vol 116 (5) ◽  
pp. 848-853 ◽  
Author(s):  
V. R. Shaginyan ◽  
K. G. Popov ◽  
V. A. Khodel

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Oliver Hart ◽  
Yuan Wan ◽  
Claudio Castelnovo

AbstractRealistic model Hamiltonians for quantum spin liquids frequently exhibit a large separation of energy scales between their elementary excitations. At intermediate, experimentally relevant temperatures, some excitations are sparse and hop coherently, whereas others are thermally incoherent and dense. Here, we study the interplay of two such species of quasiparticle, dubbed spinons and visons, which are subject to nontrivial mutual statistics – one of the hallmarks of quantum spin liquid behaviour. Our results for $${{\mathbb{Z}}}_{2}$$ Z 2 quantum spin liquids show an intriguing feedback mechanism, akin to the Nagaoka effect, whereby spinons become localised on temperature-dependent patches of expelled visons. This phenomenon has important consequences for the thermodynamic and transport properties of the system, as well as for its response to quenches in temperature. We argue that these effects can be measured in experiments and may provide viable avenues for obtaining signatures of quantum spin liquid behaviour.


2020 ◽  
Vol 125 (26) ◽  
Author(s):  
S. Kundu ◽  
Aga Shahee ◽  
Atasi Chakraborty ◽  
K. M. Ranjith ◽  
B. Koo ◽  
...  

2021 ◽  
Author(s):  
James O. Thomas ◽  
Jakub K. Sowa ◽  
Bart Limburg ◽  
Xinya Bian ◽  
Charalambos Evangeli ◽  
...  

Experimental studies of electron transport through an edge-fused porphyrin oligomer in a graphene junction are interpreted within a Hubbard dimer framework.


Sign in / Sign up

Export Citation Format

Share Document