Joel Davidsson's Books

Color Centers in Semiconductors for Quantum Applications

A High-Throughput Search of Point Defects in SiC

By: Joel Davidsson

Write a review Read reviews Take a Quiz Solve Book Puzzle

Color Centers in Semiconductors for Quantum Applications

A High-Throughput Search of Point Defects in SiC

By: Joel Davidsson

Point defects in semiconductors have been and will continue to be relevant for applications. Shallow defects realize transistors, which power the modern age of information, and in the not-too-distant future, deep-level defects could provide the foundation for a revolution in quantum information processing. Deep-level defects (in particular color centers) are also of interest for other applications such as a single photon emitter, especially one that emits at 1550 nm, which is the optimal frequency for long-range communication via fiber optics. First-principle calculations can predict the energies and optical properties of point defects. I performed extensive convergence tests for magneto-optical properties, such as zero phonon lines, hyperfine coupling parameters, and zero-field splitting for the four different configurations of the divacancy in 4H-SiC. Comparing the converged results with experimental measurements, a clear identification of the different configurations was made. With this approach, I also identified all configurations for the silicon vacancy in 4H-SiC as well as the divacancy and silicon vacancy in 6H-SiC. The same method was further used to identify two additional configurations belonging to the divacancy present in a 3C stacking fault inclusion in 4H-SiC. I extended the calculated properties to include the transition dipole moment which provides the polarization, intensity, and lifetime of the zero phonon lines. When calculating the transition dipole moment, I show that it is crucial to include the self-consistent change of the electronic orbitals in the excited state due to the geometry relaxation. I tested the method on the divacancy in 4H-SiC, further strengthening the previous identification and providing accurate photoluminescence intensities and lifetimes. Finding stable point defects with the right properties for a given application is a challenging task. Due to the vast number of possible point defects present in bulk semiconductor materials, I designed and implemented a collection of automatic workflows to systematically investigate any point defects. This collection is called ADAQ (Automatic Defect Analysis and Qualification) and automates every step of the theoretical process, from creating defects to predicting their properties. Using ADAQ, I screened about 8000 intrinsic point defect clusters in 4H-SiC. This thesis presents an overview of the formation energy and the most relevant optical properties for these single and double point defects. These results show great promise for finding new color centers suitable for various quantum applications.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

Publisher

Linköping University Electronic Press

Published Date

ISBN 10

9179297307

ISBN 13

9789179297305

Pentecostal Politics in a Secular World

The Life and Leadership of Lewi Pethrus

By: Joel Halldorf

Write a review Read reviews Take a Quiz Solve Book Puzzle

Pentecostal Politics in a Secular World

The Life and Leadership of Lewi Pethrus

By: Joel Halldorf

This book investigates the life and leadership of Lewi Pethrus, a monumental figure in Swedish and international Pentecostalism. Joel Halldorf describes Pethrus’ role in the emergence of Pentecostalism in Sweden, the ideals and practices of Swedish Pentecostalism, and the movement’s turn to professional party politics. When Pentecostals in the USA ventured into politics, they became allied with the Republican party, and later Donald Trump. The Swedish Pentecostals took another route: while culturally conservative, they embraced the progressive economic politics of the Social Democratic party. During the 2010s, they have also rejected the nationalism of the growing populist movement. Halldorf analyzes and explains these differences between Swedish evangelicals and Pentecostals on the one hand, and the Religious Right in the USA on the other.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

299

Publisher

Springer Nature

Published Date

ISBN 10

3030470512

ISBN 13

9783030470517

Conn's Current Therapy 2024 - E-Book

By: Rick D. Kellerman,David P. Rakel,Joel J. Heidelbaugh

Write a review Read reviews Take a Quiz Solve Book Puzzle

Conn's Current Therapy 2024 - E-Book

By: Rick D. Kellerman,David P. Rakel,Joel J. Heidelbaugh

**Selected for Doody's Core Titles® 2024 with "Essential Purchase" designation in Family Medicine**Trusted by clinicians for more than 75 years, Conn's Current Therapy presents today's evidence-based information along with the personal experience and discernment of expert physicians. The 2024 edition is a helpful resource for a wide range of healthcare providers, including primary care physicians, subspecialists, and allied health professionals, providing current treatment information in a concise yet in-depth format. Nearly 350 topics have been carefully reviewed and updated to bring you state-of-the-art content in even the most rapidly changing areas of medicine. - Offers personal approaches from recognized leaders in the field, covering common complaints, acute diseases, and chronic illnesses along with the most current evidence-based clinical management options. - Follows a consistent, easy-to-use format throughout, with diagnosis, therapy, drug protocols, and treatment pearls presented in quick-reference boxes and tables for point-of-care answers to common clinical questions. - Incorporates electronic links throughout the text that connect the reader to apps and clinical prediction tools that can easily be accessed in practice. - Features thoroughly reviewed and updated information from multiple expert authors and editors, who offer a fresh perspective and their unique personal experience and judgment. - Provides current drug information thoroughly reviewed by PharmDs. - Features nearly 300 images, including algorithms, anatomical illustrations, and photographs, that provide useful information for diagnosis.

Average ratings

N/A

Write a review

Solve jigsaw puzzle

Age

Page Count

1645

Publisher

Elsevier Health Sciences

Published Date

ISBN 10

0443121524

ISBN 13

9780443121524

Book's by Joel Davidsson

Color Centers in Semiconductors for Quantum Applications

Color Centers in Semiconductors for Quantum Applications

Pentecostal Politics in a Secular World

Pentecostal Politics in a Secular World

Conn's Current Therapy 2024 - E-Book

Conn's Current Therapy 2024 - E-Book

Username

Password

Username

Password

Password again

Birthday

Email