Experimental determination of the Fermi surface of the spin spiral compound TlCo2Se2
2007 (English)In: Europhysics letters, ISSN 0295-5075, E-ISSN 1286-4854, Vol. 77, no 2, 27001- p.Article in journal (Refereed) Published
The electronic structure of TlCo2Se2 has been measured using high resolution angle resolved photoemission spectroscopy. TlCo2Se2 is thought to be an example of an incommensurate spin spiral system, where the magnetic moments of the cobalt layers are aligned ferromagnetically in the ab plane, but the magnetic moments are rotated by ~121° along the c-axis. However, experimental evidence in the electronic structure supporting spin spiral states has been lacking. Our experimental results clearly show the existence of band crossings near the Fermi level that are consistent with such states. Our data also reveal a remarkably heavily nested square Fermi surface in the plane perpendicular to the spin spiral, confirming the predicted quasi–two-dimensional electronic structure.
Place, publisher, year, edition, pages
2007. Vol. 77, no 2, 27001- p.
IdentifiersURN: urn:nbn:se:uu:diva-23479DOI: 10.1209/0295-5075/77/27001ISI: 000245671500021OAI: oai:DiVA.org:uu-23479DiVA: diva2:51253