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Title: Emergent Bloch excitations in Mott matter

Abstract

Here, we develop a unified theoretical picture for excitations in Mott systems, portraying both the heavy quasiparticle excitations and the Hubbard bands as features of an emergent Fermi liquid state formed in an extended Hilbert space, which is nonperturbatively connected to the physical system. This observation sheds light on the fact that even the incoherent excitations in strongly correlated matter often display a well-defined Bloch character, with pronounced momentum dispersion. Furthermore, it indicates that the Mott point can be viewed as a topological transition, where the number of distinct dispersing bands displays a sudden change at the critical point. Our results, obtained from an appropriate variational principle, display also remarkable quantitative accuracy. This opens an exciting avenue for fast realistic modeling of strongly correlated materials.

Authors:
 [1];  [1];  [2];  [1]
  1. Florida State Univ., Tallahassee, FL (United States)
  2. Ames Lab. and Iowa State Univ., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1410347
Alternate Identifier(s):
OSTI ID: 1408793
Report Number(s):
IS-J-9509
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 19; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Lanata, Nicola, Lee, Tsung -Han, Yao, Yong -Xin, and Dobrosavljevic, Vladimir. Emergent Bloch excitations in Mott matter. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.96.195126.
Lanata, Nicola, Lee, Tsung -Han, Yao, Yong -Xin, & Dobrosavljevic, Vladimir. Emergent Bloch excitations in Mott matter. United States. doi:10.1103/PhysRevB.96.195126.
Lanata, Nicola, Lee, Tsung -Han, Yao, Yong -Xin, and Dobrosavljevic, Vladimir. Tue . "Emergent Bloch excitations in Mott matter". United States. doi:10.1103/PhysRevB.96.195126. https://www.osti.gov/servlets/purl/1410347.
@article{osti_1410347,
title = {Emergent Bloch excitations in Mott matter},
author = {Lanata, Nicola and Lee, Tsung -Han and Yao, Yong -Xin and Dobrosavljevic, Vladimir},
abstractNote = {Here, we develop a unified theoretical picture for excitations in Mott systems, portraying both the heavy quasiparticle excitations and the Hubbard bands as features of an emergent Fermi liquid state formed in an extended Hilbert space, which is nonperturbatively connected to the physical system. This observation sheds light on the fact that even the incoherent excitations in strongly correlated matter often display a well-defined Bloch character, with pronounced momentum dispersion. Furthermore, it indicates that the Mott point can be viewed as a topological transition, where the number of distinct dispersing bands displays a sudden change at the critical point. Our results, obtained from an appropriate variational principle, display also remarkable quantitative accuracy. This opens an exciting avenue for fast realistic modeling of strongly correlated materials.},
doi = {10.1103/PhysRevB.96.195126},
journal = {Physical Review B},
number = 19,
volume = 96,
place = {United States},
year = {2017},
month = {11}
}

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