Austin Kaczmarek
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View article: Signatures of quantum spin liquid state and unconventional transport in thin film TbInO3
Signatures of quantum spin liquid state and unconventional transport in thin film TbInO3 Open
View article: Unconventional polaronic ground state in superconducting LiTi$_2$O$_4$
Unconventional polaronic ground state in superconducting LiTi$_2$O$_4$ Open
Geometrically frustrated lattices can display a range of correlated phenomena, ranging from spin frustration and charge order to dispersionless flat bands due to quantum interference. One particularly compelling family of such materials is…
View article: Visualizing the breakdown of the quantum anomalous Hall effect
Visualizing the breakdown of the quantum anomalous Hall effect Open
The creation of topologically non-trivial matter across electronic, mechanical, cold-atom, and photonic platforms is advancing rapidly, yet understanding the breakdown of topological protection remains a major challenge. In this work, we u…
View article: Imaging signatures of edge currents in a magnetic topological insulator
Imaging signatures of edge currents in a magnetic topological insulator Open
Magnetic topological insulators (MTIs) host topologically protected edge states, but the role that these edge states play in electronic transport remains unclear. Using scanning superconducting quantum interference device (SQUID) microscop…
View article: Direct Comparison of Magnetic Penetration Depth in Kagome Superconductors AV$_3$Sb$_5$ (A = Cs, K, Rb)
Direct Comparison of Magnetic Penetration Depth in Kagome Superconductors AV$_3$Sb$_5$ (A = Cs, K, Rb) Open
We report measurements of the local temperature-dependent penetration depth, $λ(T)$, in the Kagome superconductors AV$_3$Sb$_5$ (A = Cs, K, Rb) using scanning superconducting quantum interference device (SQUID) microscopy. Our results sugg…
View article: Direct Imaging of Transition-Edge Sensors with Scanning SQUID Microscopy
Direct Imaging of Transition-Edge Sensors with Scanning SQUID Microscopy Open
Significant advancements have been made in understanding the physics of transition-edge sensors (TESs) over the past decade. However, key questions remain, particularly a detailed understanding of the current-dependent resistance of these …
View article: Ferrorotational domain walls revealed by electric quadrupole second harmonic generation microscopy
Ferrorotational domain walls revealed by electric quadrupole second harmonic generation microscopy Open
Domain walls are ubiquitous in materials that undergo phase transitions driven by spontaneous symmetry breaking. Domain walls in ferroics and multiferroics have received tremendous attention recently due to their emergent properties distin…
View article: Ferro-rotational domain walls revealed by electric quadrupole second harmonic generation microscopy
Ferro-rotational domain walls revealed by electric quadrupole second harmonic generation microscopy Open
Domain walls are ubiquitous in materials that undergo phase transitions driven by spontaneous symmetry breaking. Domain walls in ferroics and multiferroics have received tremendous attention recently due to their emergent properties distin…
View article: Second-order nonlinear optical and linear ultraviolet-visible absorption properties of the type-II multiferroic candidates <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>RbFe</mml:mi><mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mi>A</mml:mi><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow><mml:mo>)</mml:mo></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math> (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>A</mml:mi><mml:mo>=</mml:mo><mml:mi>Mo</mml:mi><mml:mo>,</mml:mo><mml:mi>Se</mml:mi><mml:mo>,</mml:mo><mml:mi mathvariant="normal">S</mml:mi></mml:mrow></mml:math>)
Second-order nonlinear optical and linear ultraviolet-visible absorption properties of the type-II multiferroic candidates () Open
Motivated by the search for type-II multiferroics, in this work, we present a comprehensive optical study of a complex oxide family of type-II multiferroic candidates: RbFe(MoO4)2, RbFe(SeO4)2, a…
View article: Exciton Transport under Periodic Potential in MoSe2/WSe2 Heterostructures
Exciton Transport under Periodic Potential in MoSe2/WSe2 Heterostructures Open
The predicted formation of moire superlattices leading to confined excitonic states in heterostructures formed by stacking two lattice mismatched transition metal dichalcogenide (TMD) monolayers was recently experimentally confirmed. Such …