The surface structure and charge distribution of ZrSe3 and ZrTe3

Prodan, A.; Marinković, V.; Jug, N.; Midden, H. J. P. van; Böhm, Horst; Boswell, F.W.; Bennett, J.C.

doi:10.1016/s0039-6028(01)00840-8

Cited by 12 publications

(9 citation statements)

References 10 publications

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“…32 Previous scanning tunneling microscopy work reported charge instability between various selenium and/or tellurium chains forming at the surface and possibly related to excess chalcogenide concentration. 33 The Lorentz model is a rather common tool for getting further insight on the spectra and particularly for extracting the characteristic absorption energy scales. For all compounds, we account for the spectral range above 600 cm −1 with a broad Lorentz h.o., describing the midinfrared tail of the interband transitions, and three h.o.…”

Section: B Electronic Interband Transitionsmentioning

confidence: 99%

Photoemission and optical studies ofZrSe3,HfSe3, and
Pacilé
¹
,
Papagno
²
,
Lavagnini
³

et al. 2007
Phys. Rev. B
18
2
11
2
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Angle-resolved photoemission spectroscopy ͑ARPES͒ and optical measurements were performed on single crystal samples of ZrSe 3 , HfSe 3 , and ZrS 3 , which belong to the class of low-dimensional band insulators. By ARPES, we traced the dispersion of the ͑S 3p, Se 4p͒ p-derived valence states. In all cases, the topmost band exhibits energy splitting increasing from S to Se, which we attribute to the spin-orbit interaction, similar to recent observations in the related layered dichalcogenides. The combination of optical and photoemission results allows us to address the issue of the gap feature in the absorption spectra and to characterize the electronic and vibrational properties of ZrSe 3 , HfSe 3 , and ZrS 3 .

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Section: B Electronic Interband Transitionsmentioning

confidence: 99%

Photoemission and optical studies ofZrSe3,HfSe3, and
Pacilé
¹
,
Papagno
²
,
Lavagnini
³

et al. 2007
Phys. Rev. B
18
2
11
2
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“…A detailed study of the valence band by synchrotron radiation photoemission spectroscopy and the existence of paired-anion ligands in zirconium trichalcogenides had been demonstrated (Margaritondo et al 1980). The direct band gap between occupied and unoccupied states at t is 2⋅7 eV and at A 1⋅8 eV, however, an indirect band gap is present from the top of the valence band at t to the bottom of the conduction band at A 1⋅3 eV (Prodam et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Crystal growth and structural analysis of zirconium sulphoselenide single crystals

Patel¹,

Vaidya²,

Dave

et al. 2008

Bull Mater Sci

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A series of zirconium sulphoselenide (ZrS x Se 3-x , where x = 0, 0⋅5, 1, 1⋅5, 2, 2⋅5, 3) single crystals have been grown by chemical vapour transport technique using iodine as a transporting agent. The optimum condition for the growth of these crystals is given. The stoichiometry of the grown crystals were confirmed on the basis of energy dispersive analysis by X-ray (EDAX) and the structural characterization was accomplished by X-ray diffraction (XRD) studies. The crystals are found to possess monoclinic structure. The lattice parameters, volume, particle size and X-ray density have been carried out for these crystals. The effect of sulphur proportion on the lattice parameter, unit cell volume and X-ray density in the series of ZrS x Se 3-x single crystals have been studied and found to decrease in all these parameters with rise in sulphur proportion. The grown crystals were examined under optical zoom microscope for their surface topography study. Hall effect measurements were carried out on grown crystals at room temperature. The negative value of Hall coefficient implies that these crystals are n-type in nature. The conductivity is found to decrease with increase of sulphur content in the ZrS x Se 3-x series. The electrical resistivity parallel to c-axis as well as perpendicular to c-axis have been carried out in the temperature range 303-423 K. The results obtained are discussed in detail.

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“…Niobium triselenide (NbSe 3 ) is a low-dimensional inorganic conductor, which shows a variety of nonlinear transport properties associated with charge-density-wave (CDW) phase transitions at 59 and 145 K. − NbSe 3 crystals possess a pseudo one-dimensional structure with infinite chains of triangular prismatic units parallel to the b -axis. , The chains with strong bonding are separated by relatively large distances. As a result, the compound exhibits remarkable anisotropy in most of its physical properties and has been a model system for quasi-one-dimensional CDW studies.…”

mentioning

confidence: 99%

Nanowires and Nanoribbons of Charge-Density-Wave Conductor NbSe₃

et al. 2005

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We report synthesis of nanowires and nanoribbons of the charge-density-wave conductor NbSe(3) through direct reaction of Nb and Se powders. The transverse dimension of the obtained nanostructures, as identified with scanning/transmission electron microscopy, ranges from 20 to 700 nm. X-ray and selected area electron diffraction analyses indicate that these nanowires and nanoribbons are single crystalline. Four-probe resistivity measurements confirm the expected charge-density-wave transitions, and furthermore, we find significant enhancement in the depinning threshold fields, which we attribute to a confinement effect.

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The surface structure and charge distribution of ZrSe3 and ZrTe3

Cited by 12 publications

References 10 publications

Photoemission and optical studies ofZrSe3,HfSe3, and
Pacilé
¹
,
Papagno
²
,
Lavagnini
³

et al. 2007
Phys. Rev. B
18
2
11
2
View full text Add to dashboard Cite

Photoemission and optical studies ofZrSe3,HfSe3, and
Pacilé
¹
,
Papagno
²
,
Lavagnini
³

et al. 2007
Phys. Rev. B
18
2
11
2
View full text Add to dashboard Cite

Crystal growth and structural analysis of zirconium sulphoselenide single crystals

Nanowires and Nanoribbons of Charge-Density-Wave Conductor NbSe₃

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The surface structure and charge distribution of ZrSe3 and ZrTe3

Cited by 12 publications

References 10 publications

Photoemission and optical studies ofZrSe3,HfSe3, andPacilé1, Papagno2, Lavagnini3 et al. 2007Phys. Rev. B182112View full textAdd to dashboardCite

Photoemission and optical studies ofZrSe3,HfSe3, andPacilé1, Papagno2, Lavagnini3 et al. 2007Phys. Rev. B182112View full textAdd to dashboardCite

Crystal growth and structural analysis of zirconium sulphoselenide single crystals

Nanowires and Nanoribbons of Charge-Density-Wave Conductor NbSe3

Contact Info

Product

Resources

About

Photoemission and optical studies ofZrSe3,HfSe3, and
Pacilé
¹
,
Papagno
²
,
Lavagnini
³

et al. 2007
Phys. Rev. B
18
2
11
2
View full text Add to dashboard Cite

Photoemission and optical studies ofZrSe3,HfSe3, and
Pacilé
¹
,
Papagno
²
,
Lavagnini
³

et al. 2007
Phys. Rev. B
18
2
11
2
View full text Add to dashboard Cite

Nanowires and Nanoribbons of Charge-Density-Wave Conductor NbSe₃