Monoclinic optical constants, birefringence, and dichroism of slanted titanium nanocolumns determined by generalized ellipsometry

Daniel Schmidt; Benjamin Booso; Tino Hofmann; Eva Schubert; Andrew Sarangan; Mathias Schubert

doi:10.1063/1.3062996

Monoclinic optical constants, birefringence, and dichroism of slanted titanium nanocolumns determined by generalized ellipsometry

Daniel Schmidt, Benjamin Booso, Tino Hofmann, Eva Schubert, Andrew Sarangan, Mathias Schubert

Electrical & Computer Engineering

Research output: Contribution to journal › Article › peer-review

72 Scopus citations

Abstract

Generalized spectroscopic ellipsometry determines the principal monoclinic optical constants of thin films consisting of slanted titanium nanocolumns deposited by glancing angle deposition under 85° incidence and tilted from the surface normal by 47°. Form birefringence measured for wavelengths from 500 to 1000 nm renders the Ti nanocolumns monoclinic absorbing crystals with c -axis along the nanocolumns, b -axis parallel to the film interface, and 67.5° monoclinic angle between the a - and c -axes. The columnar thin film reveals anomalous optical dispersion, extreme birefringence, strong dichroism, and differs completely from bulk titanium. Characteristic bulk interband transitions are absent in the spectral range investigated.

Original language	English (US)
Article number	011914
Journal	Applied Physics Letters
Volume	94
Issue number	1
DOIs	https://doi.org/10.1063/1.3062996
State	Published - 2009

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.3062996

Cite this

@article{13b94a414b2842e49f36244fa9dcaa7b,

title = "Monoclinic optical constants, birefringence, and dichroism of slanted titanium nanocolumns determined by generalized ellipsometry",

abstract = "Generalized spectroscopic ellipsometry determines the principal monoclinic optical constants of thin films consisting of slanted titanium nanocolumns deposited by glancing angle deposition under 85° incidence and tilted from the surface normal by 47°. Form birefringence measured for wavelengths from 500 to 1000 nm renders the Ti nanocolumns monoclinic absorbing crystals with c -axis along the nanocolumns, b -axis parallel to the film interface, and 67.5° monoclinic angle between the a - and c -axes. The columnar thin film reveals anomalous optical dispersion, extreme birefringence, strong dichroism, and differs completely from bulk titanium. Characteristic bulk interband transitions are absent in the spectral range investigated.",

author = "Daniel Schmidt and Benjamin Booso and Tino Hofmann and Eva Schubert and Andrew Sarangan and Mathias Schubert",

note = "Funding Information: The authors acknowledge financial support from Ohio Department of Development, NSF in MRSEC QSPIN, CoE, UNL, and J.A. Woollam Foundation as well as fruitful discussions with Qiwen Zhan. ",

year = "2009",

doi = "10.1063/1.3062996",

language = "English (US)",

volume = "94",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "1",

}

TY - JOUR

T1 - Monoclinic optical constants, birefringence, and dichroism of slanted titanium nanocolumns determined by generalized ellipsometry

AU - Schmidt, Daniel

AU - Booso, Benjamin

AU - Hofmann, Tino

AU - Schubert, Eva

AU - Sarangan, Andrew

AU - Schubert, Mathias

N1 - Funding Information: The authors acknowledge financial support from Ohio Department of Development, NSF in MRSEC QSPIN, CoE, UNL, and J.A. Woollam Foundation as well as fruitful discussions with Qiwen Zhan.

PY - 2009

Y1 - 2009

N2 - Generalized spectroscopic ellipsometry determines the principal monoclinic optical constants of thin films consisting of slanted titanium nanocolumns deposited by glancing angle deposition under 85° incidence and tilted from the surface normal by 47°. Form birefringence measured for wavelengths from 500 to 1000 nm renders the Ti nanocolumns monoclinic absorbing crystals with c -axis along the nanocolumns, b -axis parallel to the film interface, and 67.5° monoclinic angle between the a - and c -axes. The columnar thin film reveals anomalous optical dispersion, extreme birefringence, strong dichroism, and differs completely from bulk titanium. Characteristic bulk interband transitions are absent in the spectral range investigated.

AB - Generalized spectroscopic ellipsometry determines the principal monoclinic optical constants of thin films consisting of slanted titanium nanocolumns deposited by glancing angle deposition under 85° incidence and tilted from the surface normal by 47°. Form birefringence measured for wavelengths from 500 to 1000 nm renders the Ti nanocolumns monoclinic absorbing crystals with c -axis along the nanocolumns, b -axis parallel to the film interface, and 67.5° monoclinic angle between the a - and c -axes. The columnar thin film reveals anomalous optical dispersion, extreme birefringence, strong dichroism, and differs completely from bulk titanium. Characteristic bulk interband transitions are absent in the spectral range investigated.

UR - http://www.scopus.com/inward/record.url?scp=58149508169&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=58149508169&partnerID=8YFLogxK

U2 - 10.1063/1.3062996

DO - 10.1063/1.3062996

M3 - Article

AN - SCOPUS:58149508169

SN - 0003-6951

VL - 94

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 1

M1 - 011914

ER -

Monoclinic optical constants, birefringence, and dichroism of slanted titanium nanocolumns determined by generalized ellipsometry

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this