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Völkl, Tobias ; Kochan, Denis ; Ebnet, Thomas ; Ringer, Sebastian ; Schiermeier, Daniel ; Nagler, Philipp ; Korn, Tobias ; Schüller, Christian ; Fabian, Jaroslav ; Weiss, Dieter ; Eroms, Jonathan

Absence of a giant spin Hall effect in plasma-hydrogenated graphene

Völkl, Tobias, Kochan, Denis, Ebnet, Thomas, Ringer, Sebastian, Schiermeier, Daniel, Nagler, Philipp, Korn, Tobias , Schüller, Christian, Fabian, Jaroslav , Weiss, Dieter and Eroms, Jonathan (2019) Absence of a giant spin Hall effect in plasma-hydrogenated graphene. Physical Review B 99 (8), 0854011-0854018.

Date of publication of this fulltext: 05 Feb 2019 09:36
Article
DOI to cite this document: 10.5283/epub.38298


Abstract

The weak spin-orbit interaction in graphene was predicted to be increased, e.g., by hydrogenation. This should result in a sizable spin Hall effect (SHE). We employ two different methods to examine the spin Hall effect in weakly hydrogenated graphene. For hydrogenation we expose graphene to a hydrogen plasma and use Raman spectroscopy to characterize this method. We then investigate the SHE of ...

The weak spin-orbit interaction in graphene was predicted to be increased, e.g., by hydrogenation. This should result in a sizable spin Hall effect (SHE). We employ two different methods to examine the spin Hall effect in weakly hydrogenated graphene. For hydrogenation we expose graphene to a hydrogen plasma and use Raman spectroscopy to characterize this method. We then investigate the SHE of hydrogenated graphene in the H-bar method and by direct measurements of the inverse SHE. Although a large nonlocal resistance can be observed in the H-bar structure, comparison with the results of the other method indicate that this nonlocal resistance has a non-spin-related origin.



Involved Institutions


Details

Item typeArticle
Journal or Publication TitlePhysical Review B
Publisher:AMER PHYSICAL SOC
Open Access Type:Due to SHERPA/RoMEO
Place of Publication:COLLEGE PK
Volume:99
Number of Issue or Book Chapter:8
Page Range:0854011-0854018
Date1 February 2019
InstitutionsPhysics > Institute of Theroretical Physics
Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian
Physics > Institute of Experimental and Applied Physics
Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss
Identification Number
ValueType
10.1103/PhysRevB.99.085401DOI
KeywordsRAMAN-SPECTROSCOPY; GRAPHITE; CHARGE;
Dewey Decimal Classification500 Science > 530 Physics
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgYes
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-382987
Item ID38298

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