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Probing unconventional transport reg...

McGuinness, Philippa H.

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Probing unconventional transport regimes in delafossite metals

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Probing unconventional transport regimes in delafossite metals/ by Philippa H. McGuinness.
作者:	McGuinness, Philippa H.
出版者:	Cham :Springer International Publishing : : 2022.,
面頁冊數:	xvii, 140 p. :ill. (some col.), digital ;24 cm.
附註:	"Doctoral Thesis accepted by the University of St Andrews, St Andrews, Scotland."
內容註:	Introduction -- The Ultrapure Delafossite Metals PdCoO2 and PtCoO2 -- Creation and Measurement of Microstructures of Ultrapure Materials -- High Energy Electron Irradiation of Delafossite Metals -- Ballistic Transport in Square Junctions of Delafossite Metals -- Conclusions and outlook.
Contained By:	Springer Nature eBook
標題:	Copper alloys - Microstructure. -
電子資源:	https://doi.org/10.1007/978-3-031-14244-4
ISBN:	9783031142444

Probing unconventional transport regimes in delafossite metals
McGuinness, Philippa H.

Probing unconventional transport regimes in delafossite metals[electronic resource] /by Philippa H. McGuinness. - Cham :Springer International Publishing :2022. - xvii, 140 p. :ill. (some col.), digital ;24 cm. - Springer theses,2190-5061. - Springer theses..

"Doctoral Thesis accepted by the University of St Andrews, St Andrews, Scotland."

Introduction -- The Ultrapure Delafossite Metals PdCoO2 and PtCoO2 -- Creation and Measurement of Microstructures of Ultrapure Materials -- High Energy Electron Irradiation of Delafossite Metals -- Ballistic Transport in Square Junctions of Delafossite Metals -- Conclusions and outlook.

This thesis describes in-depth studies of the remarkable electronic transport within the ultrahigh conductivity delafossite metals PtCoO_2 and PdCoO_2 using the tool of focused ion beam (FIB) microstucturing. Despite being first synthesised over 50 years ago, important questions remain regarding both the origin of the unusually high conductivity of these compounds and the consequences of their unique properties for unconventional electronic transport, such as that within the ballistic regime. The thesis explores both these areas. High-energy electron irradiation is used to examine the effects of deliberately introducing point defects into PdCoO_2 and PtCoO_2, demonstrating that the extremely low resistivity of these materials stems from an extreme purity as high as 1 defect in 120,000 atoms, rather than a novel scattering suppression mechanism. In addition, studies of the electronic transport in micron-scale squares of these metals show that their broadly hexagonal Fermi surfaces lead not only to long range ballistic behaviour but novel ballistic regime phenomena which cannot be observed in materials with a higher-symmetry Fermi surface.

ISBN: 9783031142444

Standard No.: 10.1007/978-3-031-14244-4doiSubjects--Topical Terms:

3606558
Copper alloys
--Microstructure.

LC Class. No.: TN780

Dewey Class. No.: 620.182

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520 $a This thesis describes in-depth studies of the remarkable electronic transport within the ultrahigh conductivity delafossite metals PtCoO_2 and PdCoO_2 using the tool of focused ion beam (FIB) microstucturing. Despite being first synthesised over 50 years ago, important questions remain regarding both the origin of the unusually high conductivity of these compounds and the consequences of their unique properties for unconventional electronic transport, such as that within the ballistic regime. The thesis explores both these areas. High-energy electron irradiation is used to examine the effects of deliberately introducing point defects into PdCoO_2 and PtCoO_2, demonstrating that the extremely low resistivity of these materials stems from an extreme purity as high as 1 defect in 120,000 atoms, rather than a novel scattering suppression mechanism. In addition, studies of the electronic transport in micron-scale squares of these metals show that their broadly hexagonal Fermi surfaces lead not only to long range ballistic behaviour but novel ballistic regime phenomena which cannot be observed in materials with a higher-symmetry Fermi surface.
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