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Characterization of the torsional piezoelectriclike response of tantalum trisulfide associated with charge-density-wave depinning


Nichols, John; Dominko, Damir; Ladino, Luis; Zhou, Jun; Brill, Joseph
Characterization of the torsional piezoelectriclike response of tantalum trisulfide associated with charge-density-wave depinning // Physical Review B - Condensed Matter and Materials Physics, 79 (2009), 24; 241110-1 doi:10.1103/PhysRevB.79.241110 (međunarodna recenzija, članak, znanstveni)


Naslov
Characterization of the torsional piezoelectriclike response of tantalum trisulfide associated with charge-density-wave depinning

Autori
Nichols, John ; Dominko, Damir ; Ladino, Luis ; Zhou, Jun ; Brill, Joseph

Izvornik
Physical Review B - Condensed Matter and Materials Physics (1098-0121) 79 (2009), 24; 241110-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Charge density waves; piezoresistance; tantalum compounds; torsion

Sažetak
We have studied the frequency and voltage dependences of voltage-induced torsional strains in orthorhombic TaS3 [V. Y. Pokrovskii, S. G. Zybtsev, and I. G. Gorlova, Phys. Rev. Lett. 98, 206404 (2007)] by measuring the modulation of the resonant frequency of an rf cavity containing the sample. The strain has an onset voltage below the charge-density-wave (CDW) threshold voltages associated with changes in shear compliance and resistance, suggesting that the strain is associated with polarization of the CDW rather than CDW current. Measurements with square-wave voltages show that the strain is very sluggish, not even reaching its dc value at a frequency of 0.1 Hz, but the dynamics appears to be very sample dependent. By applying oscillating torque while biasing the sample with a dc current, we have also looked for strain-induced voltage in the sample ; none is observed at the low biases where the voltage-induced strains first occur, but an induced voltage is observed at higher biases, probably associated with a strain-dependent CDW conductance.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
035-0352827-2842 - Kompleksni modulirani sistemi: nova osnovna stanja, defekti i magnetski efekti (Katica Biljaković, )

Ustanove
Institut za fiziku, Zagreb

Autor s matičnim brojem:
Damir Dominko, (285600)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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