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Work19

Resource type

Dissertation19

Creator

Avers, Keenan Edward1
Barrows, Frank1
Collins, Kelsey Ann1
Fauvell, Thomas James1
Griesemer, Sean Darius1
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Keyword

Density functional theory2
Superconductivity2
Aggregation1
Big data1
Complex Oxide1
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Subject

Condensed matter physics[remove]19
Materials Science4
Chemistry2
Computational physics2
Inorganic chemistry2
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Language

en19

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Colloidal superionics

Description:

This dissertation focuses on the study of the superionic state in multicomponent systems, where the smaller component exhibits delocalization and mobility while still maintaining system compactness through component attractions. Superionic behavior is widely observed in various systems and plays a crucial role in ceramic superionic conductors, which offer high ion...

Keyword:

electrostatics, charge transport, sublattice melting, phase transition, superionic behaviors, and colloidal crystals

Subject:

Physical chemistry, Chemistry, and Condensed matter physics

Creator:

Lin, Yange

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

08/23/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16697 and etdadmin_upload_1009942
Topological classification of time-reversal invariant quantum materials

Description:

In recent years, the understanding and identification of quantum materials supporting non-trivial band topology has progressed rapidly. This progress has been motivated in part by the potential application of topological quantum materials in quantum computers, sensors, and other next-generation devices. Despite this progress, the computation of bulk topological invariants in...

Keyword:

Materials science, Topology, Condensed matter, and Quantum matter

Subject:

Condensed matter physics

Creator:

Tyner, Alexander Conkey

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

08/23/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16689 and etdadmin_upload_1009644
Low Temperature Electrical Transport Behavior of AlOx / KTaO3 Based Two Dimensional Electron Gases

Description:

Necessity is the mother of innovation. In the wake of the pandemic, with no flow of samples and limited fabrication techniques available, necessity demanded a new material platform and adaptable methods to make complex oxide samples worth measuring. The material platform was KTaO3 , the younger successor to the mainstay...

Keyword:

Magnetism, Complex Oxide, KTaO3, Superconductivity, Electrical Transport, and Cryogenic

Subject:

Condensed matter physics

Creator:

Krantz, Patrick Wallace

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

08/23/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_1009434 and http://dissertations.umi.com/northwestern:16686
Controlling Magneto-optical Properties in 2D InSe

Description:

Light is a powerful tool for manipulating and probing magnetic states in solid state systems. In particular, optically-induced spin orientation, the ability to orient spin with polarized light, has been extensively utilized in low-dimensional III-V and II-VI semiconductors to pioneer spintronic research. Even though traditional semiconductors have found a wide...

Keyword:

Layered Semiconductors, Optical Spin Dynamics, Monochalcogenides, van der Waals Systems, and Magneto-optics

Subject:

Physics and Condensed matter physics

Creator:

Nelson, Jovan Julius

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

05/31/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_982678 and http://dissertations.umi.com/northwestern:16502
High Throughput Computational Materials Discovery

Description:

The field of materials discovery is undergoing an unprecedented transition from laboratory tocomputer. Behind this transition is the new ability to accurately compute material properties, especially energetic stability, from first principles with density functional theory (DFT). However, DFT remains computationally expensive, and DFT-based materials discovery is intractable, especially in high...

Keyword:

High throughput, Inorganic compounds, Big data, Density functional theory, Materials discovery, and Machine learning

Subject:

Materials Science, Condensed matter physics, and Computational chemistry

Creator:

Griesemer, Sean Darius

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

05/31/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16606 and etdadmin_upload_986816
Control of spin geometry in metal organic materials for emergent phenomena

Description:

Emergent phenomena are phenomena that only arise from the bulk collective, not from individual pieces of that collective. The design of materials which host emergent phenomena can be achieved by controlling the interactions between constituent atoms, ions, or electronic spins in a material, and include materials such as permanent magnets...

Subject:

Inorganic chemistry and Condensed matter physics

Creator:

Collins, Kelsey Ann

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

06/22/2022

Date Created:

2022-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_874733 and http://dissertations.umi.com/northwestern:15902
Zero Sound in Liquid 3He near the Superfluid Transition

Description:

Fluctuations are ubiquitous in physics.For a system close to a phase transition, the order parameter fluctuations are strong. In this thesis we study the pair fluctuations in liquid 3He when it is close to the superfluid phase transition. Liquid 3He is a neutral Fermi liquid, which allows zero sound to...

Keyword:

pair fluctuations, liquid 3He, and zero sound

Subject:

Condensed matter physics

Creator:

Lin, Wei-Ting

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

02/02/2022

Date Created:

2021-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_863491 and http://dissertations.umi.com/northwestern:15872
Experimental Studies of Spin Waves in a Micrometer-Thick Yttrium Iron Garnet film, and Micromagnetic Simulations of Microwave Assisted Magnetic Reversal of Nanosized Magnets

Description:

Part I - Experimental Studies of Spin Waves in a Micrometer-Thick Yttrium Iron Garnet filmAn investigation of spin wave dispersion in a micrometer-thick ferrimagnetic yttrium iron garnet (YIG) film has been conducted in various regimes. In the linear excitation regime, the dispersion of spin waves was characterized in an yttrium...

Keyword:

Microwave assisted reversal, Micromagnetic simulation, YIG film, FMR, Spin wave instability, and Nano-size magnet

Subject:

Condensed matter physics and Computational physics

Creator:

Lim, Jinho

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

02/02/2022

Date Created:

2021-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:15798 and etdadmin_upload_851303
Nuclear magnetic resonance studies of under-doped HgBa$_2$CuO$_{4+\delta}$ single crystals

Description:

The cuprate superconductor HgBa$_2$CuO$_{4+\delta}$ (Hg1201) has one of the simplest physical structures of the cuprates making it an ideal candidate for nuclear magnetic resonance (NMR) measurements. Here we discuss our NMR experiments aimed at studying the mixed state of two under-doped single crystal Hg1201 samples at high magnetic fields.

Subject:

Condensed matter physics

Creator:

Stolt, Ingrid

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

02/02/2022

Date Created:

2021-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_846392 and http://dissertations.umi.com/northwestern:15782
Optical Stark shifts of hybrid light-matter states in two-dimensional semiconductors

Description:

Light provides a high-speed and coherent medium for controlling quantum states. In semiconductors, coherent optical effects have been used extensively to lift spin degeneracy on ultrafast timescales and demonstrate high-fidelity control of quantum spin states. Extending this approach to novel pseudospins in monolayer transition metal dichalcogenides (TMDs), in this thesis...

Keyword:

Polariton, ultrafast optics, exciton, Stark effect, valley, and two-dimensional materials

Subject:

Optics, Applied physics, and Condensed matter physics

Creator:

LaMountain, Trevor

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

10/07/2021

Date Created:

2021-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_838864 and http://dissertations.umi.com/northwestern:15680

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