Quantum-interference origin and magnitude of 1/<i>f</i> noise in Dirac nodal line IrO2 nanowires at low temperatures-Reference-Cited by-同舟云学术

Quantum-interference origin and magnitude of 1/f noise in Dirac nodal line IrO2 nanowires at low temperatures

Published:2023-04-03 Issue:14 Volume:122 Page:
ISSN:0003-6951
Container-title:Applied Physics Letters
language:en
Short-container-title:

Author:

Chien Po-Yu¹^ORCID,Wu Chih-Yuan²^ORCID,Wang Ruey-Tay¹^ORCID,Chiu Shao-Pin¹^ORCID,Kirchner Stefan¹³^ORCID,Yeh Sheng-Shiuan³⁴^ORCID,Lin Juhn-Jong¹^ORCID

Affiliation:

1. Department of Electrophysics, National Yang Ming Chiao Tung University 1 , Hsinchu 30010, Taiwan

2. Department of Physics, Fu Jen Catholic University 2 , Taipei 24205, Taiwan

3. Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University 3 , Hsinchu 30010, Taiwan

4. International College of Semiconductor Technology, National Yang Ming Chiao Tung University 4 , Hsinchu 30010, Taiwan

Abstract

We present 1/f noise measurements of IrO2 nanowires from 1.7 to 350 K. Results reveal that the noise magnitude (represented by Hooge parameter γ) increases at low temperatures, indicating low-frequency resistance noise from universal conductance fluctuations. The cause of this noise is determined to be due to oxygen vacancies in the rutile structure of IrO2. Additionally, the number density of these mobile defects can be calculated from the T resistance rise caused by the two-channel Kondo effect in the Dirac nodal line metal IrO2.

Funder

National Science and Technolgy Council of Taiwan

National Science and Technology Council of Taiwan

Ministry of Education of Taiwan

Publisher

AIP Publishing

Subject

Physics and Astronomy (miscellaneous)

Link

https://pubs.aip.org/aip/apl/article-pdf/doi/10.1063/5.0147131/16820626/143102_1_5.0147131.pdf

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