Universität zu Köln

Nikonov, Konstantin, Ehlen, Niels, Senkovskiy, Boris, Saigal, Nihit, Fedorov, Alexander, Nefedov, Alexei, Wöll, Christoph, di Santo, Giovanni, Petaccia, Luca and Grüneis, Alexander (2017). Synthesis and spectroscopic characterization of alkali-metal intercalated ZrSe2. Dalton Transactions, 47. pp. 2986-2991. RSC publishing. ISSN 1477-9226

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Abstract

We report on the synthesis and spectroscopic characterization of alkali metal intercalated ZrSe2 single crystals. ZrSe2 is produced by chemical vapour transport and then Li intercalated. Intercalation is performed from the liquid phase (via butyllithium) and from the vapour phase. Raman spectroscopy of intercalated ZrSe2 reveals phonon energy shifts of the Raman active A1g and Eg phonon modes, the disappearance of two-phonon modes and new low wavenumber Raman modes. Angle-resolved photoemission spectroscopy is used to perform a mapping of the Fermi surface revealing an electron concentration of 4.7 × 1014 cm−2. We also perform vapour phase intercalation of K and Cs into ZrSe2 and observe similar changes in the Raman modes as for the Li case.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Nikonov, Konstantin UNSPECIFIED UNSPECIFIED UNSPECIFIED Ehlen, Niels UNSPECIFIED UNSPECIFIED UNSPECIFIED Senkovskiy, Boris UNSPECIFIED UNSPECIFIED UNSPECIFIED Saigal, Nihit UNSPECIFIED UNSPECIFIED UNSPECIFIED Fedorov, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED Nefedov, Alexei UNSPECIFIED UNSPECIFIED UNSPECIFIED Wöll, Christoph UNSPECIFIED UNSPECIFIED UNSPECIFIED di Santo, Giovanni UNSPECIFIED UNSPECIFIED UNSPECIFIED Petaccia, Luca UNSPECIFIED UNSPECIFIED UNSPECIFIED Grüneis, Alexander UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-81551
DOI:	10.1039/C7DT03756B
Journal or Publication Title:	Dalton Transactions
Volume:	47
Page Range:	pp. 2986-2991
Date:	28 November 2017
Publisher:	RSC publishing
ISSN:	1477-9226
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II
Subjects:	Natural sciences and mathematics Physics
Funders:	ERC grant no. 648589 ’SUPER-2D’, DFG project CRC 1238, DFG project GR 3708/2-1, European Community’s Horizon 2020 Programme under grant agreement n. 730872 (CALIPSOplus)
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/8155