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Characterization and Manipulation of...

Samarawickrama, Piumi Indrachapa,

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Characterization and Manipulation of Electron Transport in Two-Dimensional Superconductor 2M-WS2 /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Characterization and Manipulation of Electron Transport in Two-Dimensional Superconductor 2M-WS2 // Piumi Indrachapa Samarawickrama.
Author:	Samarawickrama, Piumi Indrachapa,
Description:	1 electronic resource (139 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 86-02, Section: B.
Contained By:	Dissertations Abstracts International86-02B.
Subject:	Physics. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31491043
ISBN:	9798383694503

Characterization and Manipulation of Electron Transport in Two-Dimensional Superconductor 2M-WS2 /
Samarawickrama, Piumi Indrachapa,

Characterization and Manipulation of Electron Transport in Two-Dimensional Superconductor 2M-WS2 /Piumi Indrachapa Samarawickrama. - 1 electronic resource (139 pages)

Source: Dissertations Abstracts International, Volume: 86-02, Section: B.

At the forefront of endeavors to achieve fault-tolerant quantum computing lie topological superconductors, which harbor non-trivial topological states. In this study, our focus was on 2M phase WS2, a material recently recognized as a promising candidate for topological superconductivity. Herein, we present groundbreaking evidence of synthesizing high-quality crystals and inducing a thickness-dependent transition from conventional to unconventional superconductivity in thin layers of 2M-WS2.We note a significant alteration in superconducting characteristics correlated with the thickness of the sample. The distinct anisotropy and two-dimensional (2D) behavior of superconductivity in our samples are confirmed by the observation of the Berezinskii-Kosterlitz-Thouless (BKT) transition. Significantly, thinner 2M-WS2 exhibits a transition to unconventional superconductivity, characterized by a notable increase in the upper critical field. This enhancement inversely corresponds with the material's two-dimensional (2D) carrier density, consistent with expectations based on spin-orbit-parity coupling (SOPC) theory. Furthermore, we note the presence of anomalous metallic states (AMS), resembling Bose metal characteristics, under out-of-plane magnetic fields and at temperatures below the transition point. Finally, our attempts to manipulate the superconductivity of thin 2M-WS2 layers through the application of strain resulted in a notable phase change, accompanied by minor alterations in superconducting properties.We believe these findings significantly advance the understanding of superconductivity in 2M-WS2 thin layers and illuminate the complex interplay between superconductivity, layer thickness, and topological states, setting the stage for future explorations in this promising field.

English

ISBN: 9798383694503Subjects--Topical Terms:

516296
Physics.
Subjects--Index Terms:

Anomalous metallic states

Characterization and Manipulation of Electron Transport in Two-Dimensional Superconductor 2M-WS2 /
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520 $a At the forefront of endeavors to achieve fault-tolerant quantum computing lie topological superconductors, which harbor non-trivial topological states. In this study, our focus was on 2M phase WS2, a material recently recognized as a promising candidate for topological superconductivity. Herein, we present groundbreaking evidence of synthesizing high-quality crystals and inducing a thickness-dependent transition from conventional to unconventional superconductivity in thin layers of 2M-WS2.We note a significant alteration in superconducting characteristics correlated with the thickness of the sample. The distinct anisotropy and two-dimensional (2D) behavior of superconductivity in our samples are confirmed by the observation of the Berezinskii-Kosterlitz-Thouless (BKT) transition. Significantly, thinner 2M-WS2 exhibits a transition to unconventional superconductivity, characterized by a notable increase in the upper critical field. This enhancement inversely corresponds with the material's two-dimensional (2D) carrier density, consistent with expectations based on spin-orbit-parity coupling (SOPC) theory. Furthermore, we note the presence of anomalous metallic states (AMS), resembling Bose metal characteristics, under out-of-plane magnetic fields and at temperatures below the transition point. Finally, our attempts to manipulate the superconductivity of thin 2M-WS2 layers through the application of strain resulted in a notable phase change, accompanied by minor alterations in superconducting properties.We believe these findings significantly advance the understanding of superconductivity in 2M-WS2 thin layers and illuminate the complex interplay between superconductivity, layer thickness, and topological states, setting the stage for future explorations in this promising field.
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650 4 $a Applied physics. $3 3343996
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653 $a Anomalous metallic states
653 $a Superconductivity
653 $a Transition metal dichalcogenides
653 $a Two dimensional
653 $a Spin-orbit-parity coupling
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690 $a 0215
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