Sökning: WFRF:(Kawasaki Jason K.)
> (2018) >
A simple electron c...
A simple electron counting model for half-Heusler surfaces
-
- Kawasaki, Jason K. (författare)
- University of Wisconsin-Madison,University of California, Santa Barbara
-
- Sharan, Abhishek (författare)
- University of Delaware
-
- Johansson, Linda I. M. (författare)
- University of California, Santa Barbara,Lund University
-
visa fler...
-
- Hjort, Martin (författare)
- Lund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
-
- Timm, Rainer (författare)
- Lund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
-
- Thiagarajan, Balasubramanian (författare)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
-
- Schultz, Brian D. (författare)
- University of California, Santa Barbara
-
- Mikkelsen, Anders (författare)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
-
- Janotti, Anderson (författare)
- University of Delaware
-
- Palmstrøm, Chris J. (författare)
- University of California, Santa Barbara
-
visa färre...
-
(creator_code:org_t)
- American Association for the Advancement of Science (AAAS), 2018
- 2018
- Engelska.
-
Ingår i: Science Advances. - : American Association for the Advancement of Science (AAAS). - 2375-2548. ; 4
- Relaterad länk:
-
http://dx.doi.org/10... (free)
-
visa fler...
-
https://advances.sci...
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Heusler compounds are a ripe platform for discovery and manipulation of emergent properties in topological and magnetic heterostructures. In these applications, the surfaces and interfaces are critical to performance; however, little is known about the atomic-scale structure of Heusler surfaces and interfaces or why they reconstruct. Using a combination of molecular beam epitaxy, core-level and angle-resolved photoemission, scanning tunneling microscopy, and density functional theory, we map the phase diagram and determine the atomic and electronic structures for several surface reconstructions of CoTiSb (001), a prototypical semiconducting half-Heusler. At low Sb coverage, the surface is characterized by Sb-Sb dimers and Ti vacancies, while, at high Sb coverage, an adlayer of Sb forms. The driving forces for reconstruction are charge neutrality and minimizing the number of Sb dangling bonds, which form metallic surface states within the bulk bandgap. We develop a simple electron counting model that explains the atomic and electronic structure, as benchmarked against experiments and first-principles calculations. We then apply the model to explain previous experimental observations at otherhalf-Heusler surfaces, including the topological semimetal PtLuSb and the half-metallic ferromagnet NiMnSb. The model provides a simple framework for understanding and predicting the surface structure and propertiesof these novel quantum materials.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Kawasaki, Jason ...
-
Sharan, Abhishek
-
Johansson, Linda ...
-
Hjort, Martin
-
Timm, Rainer
-
Thiagarajan, Bal ...
-
visa fler...
-
Schultz, Brian D ...
-
Mikkelsen, Ander ...
-
Janotti, Anderso ...
-
Palmstrøm, Chris ...
-
visa färre...
- Om ämnet
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Fysik
-
och Atom och molekyl ...
- Artiklar i publikationen
-
Science Advances
- Av lärosätet
-
Lunds universitet