English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Tracing the localization of 4f electrons: Angle-resolved photoemission on YbCo2Si2, the stable trivalent counterpart of the heavy-fermion YbRh2Si2

Güttler, M., Kummer, K., Patil, S., Höppner, M., Hannaske, A., Danzenbächer, S., et al. (2014). Tracing the localization of 4f electrons: Angle-resolved photoemission on YbCo2Si2, the stable trivalent counterpart of the heavy-fermion YbRh2Si2. Physical Review B, 90(19): 195138, pp. 1-5. doi:10.1103/PhysRevB.90.195138.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-9C49-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-9C4A-4
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Güttler, M.1, Author
Kummer, K.1, Author
Patil, S.1, Author
Höppner, M.1, Author
Hannaske, A.2, Author              
Danzenbächer, S.1, Author
Shi, M.1, Author
Radovic, M.1, Author
Rienks, E.1, Author
Laubschat, C.1, Author
Geibel, C.3, Author              
Vyalikh, D. V.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
3Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863465              

Content

show
hide
Free keywords: -
 Abstract: YbCo2Si2 is considered to serve as a stable-valent, isoelectronic reference for the extensively studied heavy-fermion system YbRh2Si2 which is situated very close to an antiferromagnetic quantum critical point (QCP). The investigation of the Fermi surface (FS) topology of YbCo2Si2 and its comparison to YbRh2Si2 could help to unravel the strongly disputed nature of this quantum phase transition, whether it originates from a "local" or "itinerant" QCP. Here we study the electronic structure and FS of YbCo2Si2 by means of angle-resolved photoelectron spectroscopy (ARPES) and compare it to ab initio band structure calculations and FS modeling. Our approach allows the electronic structure at the surface and in the bulk to be disentangled. Identifying the bulk contribution, we demonstrate that YbCo2Si2 exhibits a "small" FS, confirming the formation of a "large" FS in YbRh2Si2. This favors an itinerant QCP, instead of the widely discussed local scenario. Our study demonstrates that ARPES is a reliable tool for the study of bulk electronic states in intermetallic Kondo lattice systems despite the complexity induced by their three-dimensional character and the presence of pronounced surface states.

Details

show
hide
Language(s): eng - English
 Dates: 2014-11-20
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Physical Review B
  Other : Phys. Rev. B
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 90 (19) Sequence Number: 195138 Start / End Page: 1 - 5 Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008