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Title: Light-Enhanced Spin Fluctuations and d -Wave Superconductivity at a Phase Boundary

Abstract

Time-domain techniques have shown the potential of photomanipulating existing orders and inducing new states of matter in strongly correlated materials. Using time-resolved exact diagonalization, we perform in this paper numerical studies of pump dynamics in a Mott-Peierls system with competing charge and spin density waves. A light-enhanced d-wave superconductivity is observed when the system resides near a quantum phase boundary. By examining the evolution of spin, charge, and superconducting susceptibilities, we show that a subdominant state in equilibrium can be stabilized by photomanipulating the charge order to allow superconductivity to appear and dominate. Finally, this work provides an interpretation of light-induced superconductivity from the perspective of order competition and offers a promising approach for designing novel emergent states out of equilibrium.

Authors:
 [1];  [2];  [3];  [4]
  1. Stanford Univ., CA (United States). Dept. of Applied Physics; SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Inst. for Materials and Energy Sciences; Harvard Univ., Cambridge, MA (United States). Dept. of Physics
  2. Univ. of Alabama, Birmingham, AL (United States). Dept. of Physics
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Inst. for Materials and Energy Sciences; Univ. of North Dakota, Grand Forks, ND (United States). Dept. of Physics and Astrophysics
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Inst. for Materials and Energy Sciences; Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Univ. of Alabama, Birmingham, AL (United States); Stanford Univ., CA (United States); Harvard Univ., Cambridge, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
OSTI Identifier:
1457780
Alternate Identifier(s):
OSTI ID: 1441257
Grant/Contract Number:  
AC02-05CH11231; AC02-76SF00515; OIA-1738698
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 24; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; quantum phase transitions; superconductivity; ultrafast phenomena; d-wave; nonequilibrium Green's function; time-resolved light scattering spectroscopy; ultrafast pump-probe spectroscopy

Citation Formats

Wang, Yao, Chen, Cheng-Chien, Moritz, B., and Devereaux, T. P. Light-Enhanced Spin Fluctuations and d -Wave Superconductivity at a Phase Boundary. United States: N. p., 2018. Web. doi:10.1103/physrevlett.120.246402.
Wang, Yao, Chen, Cheng-Chien, Moritz, B., & Devereaux, T. P. Light-Enhanced Spin Fluctuations and d -Wave Superconductivity at a Phase Boundary. United States. doi:10.1103/physrevlett.120.246402.
Wang, Yao, Chen, Cheng-Chien, Moritz, B., and Devereaux, T. P. Tue . "Light-Enhanced Spin Fluctuations and d -Wave Superconductivity at a Phase Boundary". United States. doi:10.1103/physrevlett.120.246402. https://www.osti.gov/servlets/purl/1457780.
@article{osti_1457780,
title = {Light-Enhanced Spin Fluctuations and d -Wave Superconductivity at a Phase Boundary},
author = {Wang, Yao and Chen, Cheng-Chien and Moritz, B. and Devereaux, T. P.},
abstractNote = {Time-domain techniques have shown the potential of photomanipulating existing orders and inducing new states of matter in strongly correlated materials. Using time-resolved exact diagonalization, we perform in this paper numerical studies of pump dynamics in a Mott-Peierls system with competing charge and spin density waves. A light-enhanced d-wave superconductivity is observed when the system resides near a quantum phase boundary. By examining the evolution of spin, charge, and superconducting susceptibilities, we show that a subdominant state in equilibrium can be stabilized by photomanipulating the charge order to allow superconductivity to appear and dominate. Finally, this work provides an interpretation of light-induced superconductivity from the perspective of order competition and offers a promising approach for designing novel emergent states out of equilibrium.},
doi = {10.1103/physrevlett.120.246402},
journal = {Physical Review Letters},
number = 24,
volume = 120,
place = {United States},
year = {2018},
month = {6}
}

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Cited by: 3 works
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