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Title: Photoinduced Enhancement of the Charge Density Wave Amplitude

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1271474
Grant/Contract Number:
SC0001805; SC0003678; AC02-76SF00515
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 117; Journal Issue: 5; Related Information: CHORUS Timestamp: 2016-07-25 18:09:27; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Singer, A., Patel, S. K. K., Kukreja, R., Uhlíř, V., Wingert, J., Festersen, S., Zhu, D., Glownia, J. M., Lemke, H. T., Nelson, S., Kozina, M., Rossnagel, K., Bauer, M., Murphy, B. M., Magnussen, O. M., Fullerton, E. E., and Shpyrko, O. G. Photoinduced Enhancement of the Charge Density Wave Amplitude. United States: N. p., 2016. Web. doi:10.1103/PhysRevLett.117.056401.
Singer, A., Patel, S. K. K., Kukreja, R., Uhlíř, V., Wingert, J., Festersen, S., Zhu, D., Glownia, J. M., Lemke, H. T., Nelson, S., Kozina, M., Rossnagel, K., Bauer, M., Murphy, B. M., Magnussen, O. M., Fullerton, E. E., & Shpyrko, O. G. Photoinduced Enhancement of the Charge Density Wave Amplitude. United States. doi:10.1103/PhysRevLett.117.056401.
Singer, A., Patel, S. K. K., Kukreja, R., Uhlíř, V., Wingert, J., Festersen, S., Zhu, D., Glownia, J. M., Lemke, H. T., Nelson, S., Kozina, M., Rossnagel, K., Bauer, M., Murphy, B. M., Magnussen, O. M., Fullerton, E. E., and Shpyrko, O. G. Mon . "Photoinduced Enhancement of the Charge Density Wave Amplitude". United States. doi:10.1103/PhysRevLett.117.056401.
@article{osti_1271474,
title = {Photoinduced Enhancement of the Charge Density Wave Amplitude},
author = {Singer, A. and Patel, S. K. K. and Kukreja, R. and Uhlíř, V. and Wingert, J. and Festersen, S. and Zhu, D. and Glownia, J. M. and Lemke, H. T. and Nelson, S. and Kozina, M. and Rossnagel, K. and Bauer, M. and Murphy, B. M. and Magnussen, O. M. and Fullerton, E. E. and Shpyrko, O. G.},
abstractNote = {},
doi = {10.1103/PhysRevLett.117.056401},
journal = {Physical Review Letters},
number = 5,
volume = 117,
place = {United States},
year = {Mon Jul 25 00:00:00 EDT 2016},
month = {Mon Jul 25 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevLett.117.056401

Citation Metrics:
Cited by: 11works
Citation information provided by
Web of Science

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  • Measurements of the charge-density-wave (CDW) amplitude modulation in 1{ital T}-TaS{sub 2} at room temperature has been made using a scanning tunneling microscope operating in the constant-current mode. The amplitude profiles are in good agreement with the profile predicted by the CDW domain model of Nakanishi and Shiba. Interference effects between the atomic and CDW lattices have been analyzed and do not modify these profiles significantly.
  • We performed resonant soft X-ray diffraction on known charge density wave (CDW) compounds, rare earth tri-tellurides. Near the M{sub 5} (3d - 4f) absorption edge of rare earth ions, an intense diffraction peak is detected at a wavevector identical to that of CDW state hosted on Te{sub 2} planes, indicating a CDW-induced modulation on the rare earth ions. Surprisingly, the temperature dependence of the diffraction peak intensity demonstrates an exponential increase at low temperatures, vastly different than that of the CDW order parameter. Assuming 4f multiplet splitting due to the CDW states, we present a model to calculate X-ray absorptionmore » spectrum and resonant profile of the diffraction peak, agreeing well with experimental observations. Our results demonstrate a situation where the temperature dependence of resonant X-ray diffraction peak intensity is not directly related to the intrinsic behavior of the order parameter associated with the electronic order, but is dominated by the thermal occupancy of the valence states.« less
  • Cited by 6
  • We describe a series of {sup 93}Nb NMR studies of the charge-density-wave (CDW) conductor NbSe{sub 3}. Using an aligned, multicrystalline sample, we have measured the complete shift tensors for the three Nb sites in the normal state. The results confirm a picture in which one chain is essentially insulating, and the other two are conducting. Studies below the 144-K CDW transition give well-resolved CDW-broadened line shapes, which indicate that the CDW is incommensurate with little or no lock-in to the lattice. Further NMR measurements performed with the CDW driven by electrical currents give information about the moving CDW. Motional narrowingmore » of the NMR line indicates that the CDW conduction phenomena are associated with bulk motion of the NbSe{sub 3} CDW. On the other hand, the motion is irregular at all voltages, as indicated by the large voltage required for motional narrowing, the short {ital T}{sub 2}, and the behavior of the magnetization under current-induced saturation. Furthermore, NMR spin-echo measurements of the low-voltage dielectric response indicate a spatially nonuniform response of the CDW under its pinning barriers.« less
  • Experimental evidence on high-T c cuprates reveals ubiquitous charge density wave (CDW) modulations, which coexist with superconductivity. Although the CDW had been predicted by theory, important questions remain about the extent to which the CDW influences lattice and charge degrees of freedom and its characteristics as functions of doping and temperature. These questions are intimately connected to the origin of the CDW and its relation to the mysterious cuprate pseudogap. We use ultrahigh-resolution resonant inelastic X-ray scattering to reveal new CDW character in underdoped Bi 2.2Sr 1.8Ca 0.8Dy 0.2Cu 2O 8+δ. At low temperature, we observe dispersive excitations from anmore » incommensurate CDW that induces anomalously enhanced phonon intensity, unseen using other techniques. Furthermore, near the pseudogap temperature T*, the CDW persists, but the associated excitations significantly weaken with an indication of CDW wavevector shift. The dispersive CDW excitations, phonon anomaly, and analysis of the CDW wavevector provide a comprehensive momentum-space picture of complex CDW behaviour and point to a closer relationship with the pseudogap state.« less