About: Transport and optical properties of the gapless topological Heusler compound PtYSb

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This work presents a systematic study on the optical and transport properties of the Heusler compound PtYSb. The optical properties were investigated in a wide spectral range from 10 meV to 6.5 eV, and compared to ab-initio calculations. For photon energies below 2.5 eV, the optical absorption increases linearly with photon energy. This is related with the conical shape of the electronic structure in the vicinity of the Fermi energy. The optical spectra reveal a maximum band gap of about 60 meV. Furthermore, the temperature dependence of thermal conductivity, electrical resistivity, Seebeck coefficient and Hall mobility were investigated. PtYSb exhibits very good thermoelectric properties with a high figure of merit ZT of 0.2 and a Hall mobility μh of 300 cm2 /Vs at 350 K, which is the highest value obtained for Heusler compounds up to now. The carrier concentration ranges from 5 x 1018 at low temperature to 1019 cm - 3 at 400 K. This work presents a systematic study on the optical and transport properties of the Heusler compound PtYSb. The optical properties were investigated in a wide spectral range from 10 meV to 6.5 eV, and compared to ab-initio calculations. For photon energies below 2.5 eV, the optical absorption increases linearly with photon energy. This is related with the conical shape of the electronic structure in the vicinity of the Fermi energy. The optical spectra reveal a maximum band gap of about 60 meV. Furthermore, the temperature dependence of thermal conductivity, electrical resistivity, Seebeck coefficient and Hall mobility were investigated. PtYSb exhibits very good thermoelectric properties with a high figure of merit ZT of 0.2 and a Hall mobility μh of 300 cm2 /Vs at 350 K, which is the highest value obtained for Heusler compounds up to now. The carrier concentration ranges from 5 x 1018 at low temperature to 1019 cm - 3 at 400 K. (en)
Title	Transport and optical properties of the gapless topological Heusler compound PtYSb Transport and optical properties of the gapless topological Heusler compound PtYSb (en)
skos:prefLabel	Transport and optical properties of the gapless topological Heusler compound PtYSb Transport and optical properties of the gapless topological Heusler compound PtYSb (en)
skos:notation	RIV/61989100:27350/11:86078882!RIV12-MSM-27350___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(ED0040/01/01), Z(MSM6198910016)
http://linked.open...iv/cisloPeriodika	21
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Postava, Kamil Hamrle, Jaroslav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola báňská - Technická univerzita Ostrava / Hornicko-geologická fakulta
http://linked.open...dnocenehoVysledku	235898
http://linked.open...ai/riv/idVysledku	RIV/61989100:27350/11:86078882
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	carrier density, electrical resistivity, electronic structure, energy gap, Fermi level (en)
http://linked.open.../riv/klicoveSlovo	electronic structure Fermi level carrier density energy gap electrical resistivity
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[4CFEC0ED0179]
http://linked.open...i/riv/nazevZdroje	Applied Physics Letters
http://linked.open...in/vavai/riv/obor	BH
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Regional materials science and technology centre
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	99
http://linked.open...iv/tvurceVysledku	Pištora, Jaromír Postava, Kamil Hamrle, Jaroslav Fecher, Gerhard Felser, Claudia Ouardi, Siham
http://linked.open...ain/vavai/riv/wos	000297471000012
http://linked.open...n/vavai/riv/zamer	Syntéza, struktura a vlastnosti nanomateriálů založených na bázi interkalovaných fylosylikátů
issn	0003-6951
number of pages	3 (xsd:int)
http://localhost/t...ganizacniJednotka	27350

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