Orbital-and kz-Selective Hybridization of Se 4p and Ti 3d States in the Charge 
Density Wave Phase of TiSe2

Watson, Matthew D.; Clark, Oliver J.; Mazzola, Federico; Markovic, Igor; Sunko, Veronika; Kim, Timur K.; Rossnagel, Kai; King, Philip D. C.

doi:10.1103/PhysRevLett.122.076404

Item

ITEM ACTIONSEXPORT

Add to Basket

Please note that a newer version of this item is available:
https://pure.mpg.de/pubman/item/item_3033790_5

DetailsSummary

Released

Journal Article

Orbital-and k_z-Selective Hybridization of Se 4p and Ti 3d States in the Charge Density Wave Phase of TiSe₂

MPS-Authors

/persons/resource/persons186140

Sunko, Veronika
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Watson, M. D., Clark, O. J., Mazzola, F., Markovic, I., Sunko, V., Kim, T. K., et al. (2019). Orbital-and k_z-Selective Hybridization of Se 4p and Ti 3d States in the Charge Density Wave Phase of TiSe₂. Physical Review Letters, 122(7): 076404, pp. 1-6. doi:10.1103/PhysRevLett.122.076404.

Cite as: https://hdl.handle.net/21.11116/0000-0003-31D1-9

Abstract

We revisit the enduring problem of the 2 x 2 x 2 charge density wave (CDW) order in TiSe2, utilizing photon energy-dependent angle-resolved photoemission spectroscopy to probe the full three-dimensional high- and low-temperature electronic structure. Our measurements demonstrate how a mismatch of dimensionality between the 3D conduction bands and the quasi-2D valence bands in this system leads to a hybridization that is strongly k(z) dependent. While such a momentum-selective coupling can provide the energy gain required to form the CDW, we show how additional "passenger" states remain, which couple only weakly to the CDW and thus dominate the low-energy physics in the ordered phase of TiSe2.