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Featured researches published by H. Krenn.


Applied Optics | 1984

Dual-beam interferometer for optical difference measurements.

H. Krenn; Ingo Roschger; G. Bauer

A dual-beam interferometer system is presented for performing reflectivity and absorption measurements in the 10–400-cm−1 far-infrared region. This system is designed for cryogenic applications intended for solid state spectroscopy. It consists of two coupled interferometers for optical difference measurements. Dual-beam interferometry is useful when conventional interferograms are digitization noise limited. The method of optical subtraction is presented and compared with methods based on electronic subtraction. The enhancement of dynamic range by this method increases the photometric accuracy (≥0.1%). Possible sources of errors such as offset of simultaneously recorded interferograms are discussed and analytical methods for their correction are presented.


Physical Review B | 1993

Dispersion of absorption and refractive index of PbTe and Pb1-xEuxTe (x<0.05) below and above the fundamental gap.

Shu Yuan; H. Krenn; G. Springholz; G. Bauer


Physical Review B | 1999

INTERBAND FARADAY AND KERR ROTATION AND MAGNETIZATION OF PB1-XEUXTE IN THECONCENTRATION RANGE 0<X1

H. Krenn; W. Herbst; H. Pascher; Yukio Ueta; G. Springholz; G. Bauer


Physical Review B | 1997

Magnetoreflectivity of Pb 1 − x Eu x Te epilayers and PbTe/ Pb 1 − x Eu x Te multiple quantum wells

Shu Yuan; H. Krenn; G. Springholz; Yukio Ueta; G. Bauer; Patrick J. McCann


Physical Review B | 1998

INFLUENCE OF NONPARABOLIC-ENERGY-BAND DISPERSION ON THE OPTICAL CONSTANTS CLOSE TO THE FUNDAMENTAL ABSORPTION IN PBSE AND PB1-XMNXSE EPITAXIAL FILMS

H. Krenn; Shu Yuan; Norbert Frank; G. Bauer


Physical Review B | 1997

Magnetoreflectivity of Pb{sub 1{minus}x}Eu{sub x}Te epilayers and PbTe/Pb{sub 1{minus}x}Eu{sub x}Te multiple quantum wells

Shu Yuan; H. Krenn; G. Springholz; Yukio Ueta; G. Bauer; Patrick J. McCann


Physica E-low-dimensional Systems & Nanostructures | 1998

Antiferromagnetic phase transition and interlayer spin correlations in short-period EuTe/PbTe superlattices

H. Kępa; K.I. Goldman; T.M. Giebultowicz; C.F. Majkrzak; G. Springholz; H. Krenn; S. Holl; F. Schinagl; G. Bauer


Physical Review B | 2003

Magnetic interactions in EuTe epitaxial layers and EuTe/PbTe superlattices

Henryk Kepa; G. Springholz; T.M. Giebultowicz; K. I. Goldman; C.F. Majkrzak; P. Kacman; J. Blinowski; S. Holl; H. Krenn; G. Bauer


Journal of Magnetism and Magnetic Materials | 2000

Monte Carlo study of fractional (111) monolayers of EuTe

S. Holl; F. Schinagl; T.M. Giebultowicz; H. Krenn


Physical Review B | 2001

Coherent Raman spectroscopy of CdTe/MnTe short-period superlattices

R. Rupprecht; H. Pascher; H. Krenn; W. Faschinger; G. Bauer

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G. Bauer

Johannes Kepler University of Linz

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G. Springholz

Johannes Kepler University of Linz

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Shu Yuan

Johannes Kepler University of Linz

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Yukio Ueta

Johannes Kepler University of Linz

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F. Schinagl

Johannes Kepler University of Linz

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S. Holl

Johannes Kepler University of Linz

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C.F. Majkrzak

National Institute of Standards and Technology

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H. Pascher

University of Bayreuth

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