Universität zu Köln

Manzoni, G., Gragnaniello, L., Autes, G., Kuhn, T., Sterzi, A., Cilento, F., Zacchigna, M., Enenkel, V., Vobornik, I., Barba, L., Bisti, F., Bugnon, Ph., Magrez, A., Strocov, V. N., Berger, H., Yazyev, O. V., Fonin, M., Parmigiani, F. and Crepaldi, A. (2016). Evidence for a Strong Topological Insulator Phase in ZrTe5. Phys. Rev. Lett., 117 (23). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

Full text not available from this repository.

Abstract

The complex electronic properties of ZrTe5 have recently stimulated in-depth investigations that assigned this material to either a topological insulator or a 3D Dirac semimetal phase. Here we report a comprehensive experimental and theoretical study of both electronic and structural properties of ZrTe5, revealing that the bulk material is a strong topological insulator (STI). By means of angle-resolved photoelectron spectroscopy, we identify at the top of the valence band both a surface and a bulk state. The dispersion of these bands is well captured by ab initio calculations for the STI case, for the specific interlayer distance measured in our x-ray diffraction study. Furthermore, these findings are supported by scanning tunneling spectroscopy revealing the metallic character of the sample surface, thus confirming the strong topological nature of ZrTe5.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Manzoni, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gragnaniello, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Autes, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kuhn, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sterzi, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cilento, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zacchigna, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Enenkel, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Vobornik, I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Barba, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bisti, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bugnon, Ph. UNSPECIFIED UNSPECIFIED UNSPECIFIED Magrez, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Strocov, V. N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Berger, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Yazyev, O. V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fonin, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Parmigiani, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Crepaldi, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-255335
DOI:	10.1103/PhysRevLett.117.237601
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	117
Number:	23
Date:	2016
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ELECTRONIC-STRUCTURE; GIANT RESISTIVITY; SURFACE-STATES; HFTE5; DIFFRACTION; TRANSITION; ARPES; METAL Multiple languages Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/25533