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Title: Using nonequilibrium dynamics to probe competing orders in a Mott-Peierls system

Journal Article · · Physical Review Letters
 [1];  [2];  [3];  [4];  [5];  [6]
  1. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States); Univ. of North Dakota, Grand Forks, ND (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  5. Argonne National Lab. (ANL), Argonne, IL (United States); Northern Illinois Univ., DeKalb, IL (United States)
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States)

Competition between ordered phases, and their associated phase transitions, are significant in the study of strongly correlated systems. Here, we examine one aspect, the nonequilibrium dynamics of a photoexcited Mott-Peierls system, using an effective Peierls-Hubbard model and exact diagonalization. Near a transition where spin and charge become strongly intertwined, we observe antiphase dynamics and a coupling-strength-dependent suppression or enhancement in the static structure factors. The renormalized bosonic excitations coupled to a particular photoexcited electron can be extracted, which provides an approach for characterizing the underlying bosonic modes. The results from this analysis for different electronic momenta show an uneven softening due to a stronger coupling near kF. As a result, this behavior reflects the strong link between the fermionic momenta, the coupling vertices, and ultimately, the bosonic susceptibilities when multiple phases compete for the ground state of the system.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357; AC02-76SF00515; AC02-05CH11231; FG02-03ER46097; SC0007091
OSTI ID:
1245833
Alternate ID(s):
OSTI ID: 1239440; OSTI ID: 1257729
Report Number(s):
SLAC-PUB-16569; 125920
Journal Information:
Physical Review Letters, Vol. 116, Issue 8; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

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Cited By (4)

Theoretical understanding of photon spectroscopies in correlated materials in and out of equilibrium journal August 2018
Density waves in strongly correlated quantum chains journal September 2018
Density waves in strongly correlated quantum chains text January 2017
Photoinduced enhancement of bond-order in the one-dimensional extended Hubbard model text January 2018

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