%0 Journal Article
%A Mahatha, Sanjoy Kr
%A Phillips, Jan
%A Corral-Sertal, Javier
%A Subires, David
%A Korshunov, Artem
%A Kar, Arunava
%A Buck, Jens
%A Diekmann, Florian
%A Garbarino, Gaston
%A Ivanov, Yurii P.
%A Chuvilin, Andrey
%A Mondal, Debashis
%A Vobornik, Ivana
%A Bosak, Alexei
%A Rossnagel, Kai
%A Pardo, Victor
%A Fumega, Adolfo O.
%A Blanco-Canosa, Santiago
%T Self-Stacked 1T-1H Layers in 6R-NbSeTe and the Emergence of Charge and Magnetic Correlations Due to Ligand Disorder
%J ACS nano
%V 18
%N 32
%@ 1936-0851
%C Washington, DC
%I Soc.
%M PUBDB-2024-05620
%P 21052-21060
%D 2024
%Z restricted document, copyright restrictions
%X The emergence of correlated phenomena arising from the combination of 1T and 1H van der Waals layers is the focus of intense research. Here, we synthesize a self-stacked 6R phase in NbSeTe, showing perfect alternating 1T and 1H layers that grow coherently along the c-direction, as revealed by scanning transmission electron microscopy. Angle-resolved photoemission spectroscopy shows a mixed contribution of the trigonal and octahedral Nb bands to the Fermi level. Diffuse scattering reveals temperature-independent short-range charge fluctuations with propagation vector qCO = (0.25 0), derived from the condensation of a longitudinal mode in the 1T layer, while the long-range charge density wave is quenched by ligand disorder. Magnetization measurements suggest the presence of an inhomogeneous, short-range magnetic order, further supported by the absence of a clear phase transition in the specific heat. These experimental analyses in combination with ab initio calculations indicate that the ground state of 6R-NbSeTe is described by a statistical distribution of short-range charge-modulated and spin-correlated regions driven by ligand disorder. Our results demonstrate how natural 1T-1H self-stacked bulk heterostructures can be used to engineer emergent phases of matter.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:39086092
%U <Go to ISI:>//WOS:001282968100001
%R 10.1021/acsnano.4c02005
%U https://bib-pubdb1.desy.de/record/613732