Ar antimonu un alvu leģētu Bi2Se3 plānu kārtiņu un nanovadu sintēze un īpašības

6533b857fe1ef96bd12b4931

RESEARCH PRODUCT

Ar antimonu un alvu leģētu Bi2Se3 plānu kārtiņu un nanovadu sintēze un īpašības

Malvīne Nelda Strakova

subject

termoelektriskās īpašības nanostruktūras bismuta selenīds leģēšana Fizika topoloģiskais izolators

description

Pēdējos gados augusi interese par materiāliem ar topoloģiskā izolatora (TI) īpašībām. TI ir tilpumā nevadoši, bet to virsmai piemīt metāliskas īpašības. Lielākā daļa TI ir labi termoelektriski (TE) materiāli istabas temperatūrā. Lai panāktu to, ka virsmas vadītspēja ir dominējoša, vajadzīgs nomākt tilpuma vadītspēju, kas rodas no defektiem. Pirmkārt, tilpuma vadītspēju var samazināt, samazinot vismaz vienu no TI struktūras dimensijām līdz nanoizmēram, kas būtiski palielina virsmas – tilpuma attiecību, kā arī veicot materiāla vakanču kompensējošu leģēšanu. Leģēšana var tikt izmantota arī materiālu TE īpašību uzlabošanai, tā optimizējot lādiņnesēju koncentrāciju un saglabājot to kustīgumu. Darbā tiek pētītas TI īpašību izmaiņas dažādās koncentrācijās ar antimonu leģētās Bi2Se3 nanolentāēs. TE īpašības pēta dažādās koncentrācijās ar alvu un antimonu leģētām plānām kārtiņām.

year	journal	country	edition	language
2018-01-01

https://dspace.lu.lv/dspace/handle/7/38910

PEPhysical Sciences and Engineering
- PE2Fundamental Constituents of Matter
  - PE2_1Theory of fundamental interactions
  - PE2_2 Phenomenology of fundamental interactions
  - PE2_3Experimental particle physics with accelerators
  - PE2_4Experimental particle physics without accelerators
  - PE2_6Nuclear, hadron and heavy ion physics
  - PE2_8Gas and plasma physics
  - PE2_5Classical and quantum physics of gravitational interactions
  - PE2_7Nuclear and particle astrophysics
  - PE2_9 Electromagnetism
  - PE2_10Atomic, molecular physics
  - PE2_11Ultra-cold atoms and molecules
  - PE2_18Equilibrium and non-equilibrium statistical mechanics: steady states and dynamics
  - PE2_14Lasers, ultra-short lasers and laser physics
  - PE2_17Metrology and measurement
  - PE2_16Non-linear physics
  - PE2_12Optics, non-linear optics and nano-optics
  - PE2_13Quantum optics and quantum information
  - PE2_15Thermodynamics
- PE1Mathematics
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  - PE1_11Theoretical aspects of partial differential equations
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  - PE11_7Engineering of metal oxides
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LSLife Sciences
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- LS4Physiology in Health, Disease and Ageing
  - LS4_1Organ and tissue physiology and pathophysiology
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SHSocial Sciences and Humanities
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