Theoretical description of pump/probe experiments in nesting induced charge density wave insulators

Freericks, James K.; Matveev, O. P.; Shvaika, A. M.; Devereaux, T. P.

doi:10.1117/12.2223335

Theoretical description of pump/probe experiments in nesting induced charge density wave insulators

Journal Article · Fri May 13 00:00:00 EDT 2016 · Proceedings of SPIE - The International Society for Optical Engineering

DOI:https://doi.org/10.1117/12.2223335· OSTI ID:1783721

Freericks, James K. ^[1]; Matveev, O. P. ^[2]; Shvaika, A. M. ^[3]; Devereaux, T. P. ^[4]

Georgetown Univ., Washington, DC (United States); Georgetown University
Georgetown Univ., Washington, DC (United States); Inst. for Condensed Matter Physics of National Academy of Sciences of Ukraine, Lviv (Ukraine)
Inst. for Condensed Matter Physics of National Academy of Sciences of Ukraine, Lviv (Ukraine)
Geballe Lab. for Advanced Materials, Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)

We present a theoretical description of time-resolved photoemission in charge-density-wave insulators that derive their ordering from electron nesting effects. In these pump/probe experiments, a large amplitude (but short duration) pump pulse excites the system into nonequilibrium and then a higher frequency low amplitude probe pulse photoexcites electrons, which are measured at the detector. We describe effects of electron correlations on the photoelectron spectroscopy and provide details for the theoretical techniques used to solve these problems. Here, we also show how the gap fills in as the system is excited, even though the order parameter does not go to zero. The theory is developed for the Falicov-Kimball model, which can be solved exactly with nonequilibrium dynamical mean-field theory.

View Accepted Manuscript (DOE)

Research Organization:: Georgetown Univ., Washington, DC (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division

Grant/Contract Number:: FG02-08ER46542

OSTI ID:: 1783721

Journal Information:: Proceedings of SPIE - The International Society for Optical Engineering, Journal Name: Proceedings of SPIE - The International Society for Optical Engineering Vol. 9835; ISSN 0277-786X

Publisher:: SPIECopyright Statement

Country of Publication:: United States

Language:: English

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Cited By (2)

Theoretical description of pump/probe experiments in electron-mediated charge-density-wave insulators Freericks, J. K.; Matveev, O. P.; Shen, Wen Physica Scripta, Vol. 92, Issue 3 https://doi.org/10.1088/1402-4896/aa5b6c	journal	February 2017
Time-domain pumping a quantum-critical charge density wave ordered material Matveev, O. P.; Shvaika, A. M.; Devereaux, T. P. Physical Review B, Vol. 94, Issue 11 https://doi.org/10.1103/physrevb.94.115167	journal	September 2016

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Charge-density-wave ordered phase
Falicov-Kimball model
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Pump-probe spectroscopy
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Theoretical description of pump/probe experiments in nesting induced charge density wave insulators

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References (24)

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