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Proximity effect and tunneling spect...

Zareapour, Parisa.

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Proximity effect and tunneling spectroscopy of high-temperature superconductor-semiconductor hybrid structures.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Proximity effect and tunneling spectroscopy of high-temperature superconductor-semiconductor hybrid structures./
Author:	Zareapour, Parisa.
Description:	103 p.
Notes:	Source: Dissertation Abstracts International, Volume: 77-07(E), Section: B.
Contained By:	Dissertation Abstracts International77-07B(E).
Subject:	Condensed matter physics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10020579
ISBN:	9781339513607

Proximity effect and tunneling spectroscopy of high-temperature superconductor-semiconductor hybrid structures.
Zareapour, Parisa.

Proximity effect and tunneling spectroscopy of high-temperature superconductor-semiconductor hybrid structures. - 103 p.

Source: Dissertation Abstracts International, Volume: 77-07(E), Section: B.

Thesis (Ph.D.)--University of Toronto (Canada), 2015.

This thesis presents Andreev scattering studies of a variety of high-temperature superconductor Bi2Sr2CaCu2O8+delta -normal material (SN) junctions. The SN devices were fabricated with our newly-developed technique, called the mechanical-bonding method. High-temperature superconductivity was observed in topological insulators Bi2Se3 and Bi 2Te3 (as well as graphite) by proximity to the high-temperature superconductor Bi2Sr2CaCu2O8+delta . This proximity effect was further confirmed by the application of a magnetic field and observation of a shifting in the energy of the Andreev-reflected quasiparticles as a result of diamagnetic screening supercurrents. However, the ability to probe the topological surface states in Bi2Se3 and Bi2Te3 was limited, due to the Fermi energy being deep in the bulk conduction band. Thus we turned to Bi2Te2Se, which is quite insulating in the bulk. The differential conductance measurements on Bi2Sr2CaCu2O 8+delta/Bi2Te2Se devices demonstrated a zero-bias conductance peak, suggesting evidences of a new excitation emerging at the interface between the two materials. Furthermore, the mechanical bonding method was employed as a technique to probe the density of states of Bi2Sr 2CaCu2O8+delta at various doping levels, observing the superconducting gap and the pseudogap of Bi2Sr2CaCu 2O8+delta at various temperatures.

ISBN: 9781339513607Subjects--Topical Terms:

3173567
Condensed matter physics.

Proximity effect and tunneling spectroscopy of high-temperature superconductor-semiconductor hybrid structures.
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100 1 $a Zareapour, Parisa. $3 3192622
245 1 0 $a Proximity effect and tunneling spectroscopy of high-temperature superconductor-semiconductor hybrid structures.
300 $a 103 p.
500 $a Source: Dissertation Abstracts International, Volume: 77-07(E), Section: B.
500 $a Adviser: Kenneth S. Burch.
502 $a Thesis (Ph.D.)--University of Toronto (Canada), 2015.
520 $a This thesis presents Andreev scattering studies of a variety of high-temperature superconductor Bi2Sr2CaCu2O8+delta -normal material (SN) junctions. The SN devices were fabricated with our newly-developed technique, called the mechanical-bonding method. High-temperature superconductivity was observed in topological insulators Bi2Se3 and Bi 2Te3 (as well as graphite) by proximity to the high-temperature superconductor Bi2Sr2CaCu2O8+delta . This proximity effect was further confirmed by the application of a magnetic field and observation of a shifting in the energy of the Andreev-reflected quasiparticles as a result of diamagnetic screening supercurrents. However, the ability to probe the topological surface states in Bi2Se3 and Bi2Te3 was limited, due to the Fermi energy being deep in the bulk conduction band. Thus we turned to Bi2Te2Se, which is quite insulating in the bulk. The differential conductance measurements on Bi2Sr2CaCu2O 8+delta/Bi2Te2Se devices demonstrated a zero-bias conductance peak, suggesting evidences of a new excitation emerging at the interface between the two materials. Furthermore, the mechanical bonding method was employed as a technique to probe the density of states of Bi2Sr 2CaCu2O8+delta at various doping levels, observing the superconducting gap and the pseudogap of Bi2Sr2CaCu 2O8+delta at various temperatures.
590 $a School code: 0779.
650 4 $a Condensed matter physics. $3 3173567
690 $a 0611
710 2 $a University of Toronto (Canada). $b Physics. $3 3171865
773 0 $t Dissertation Abstracts International $g 77-07B(E).
790 $a 0779
791 $a Ph.D.
792 $a 2015
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10020579