64 citations · 210 across the 19 of their papers we have counts for
21 papers
Molecular Beam Epitaxy of AgTaO3
Tobias Schwaigert, Joshua Maile, Olivia Peek +6
We report the first synthesis of single-crystal AgTaO3 thin films using molecular-beam epitaxy (MBE). High-quality epitaxial AgTaO3 films were grown on both (001)- and (111)-orient…
Solid-State Dealloying Enables Local Symmetry Breaking in Ternary Intermetallic Thin Films
Mizuki Ohno, Reiley Dorrian, Veronica Show +2
Metastable quantum materials often occupy narrow composition windows with local symmetries distinct from competing equilibrium structures. These features open pathways for realizin…
Crystalline Germanium Josephson Junctions
Frederik H. Knudsen, Axel Leblanc, Yiliu Li +8
Conventional superconducting quantum electronics rely on well-established Josephson junctions made of Al/AlO where the weak link AlO is amorphous and is believed to hos…
Transport Evidence of Magnetic Polarization in the Altermagnetic Candidate MnTe
Younes Ghorbani, Nayana Devaraj, Joshua Maile +7
The ability to precisely control magnetic properties is central to the development of future spin-based electronics. In this work, we report the successful growth of epitaxial α-Mn…
Above Room Temperature Ferroelectricity in Epitaxially Strained KTaO3
Tobias Schwaigert, Salva Salmani-Rezaie, Sankalpa Hazra +9
Epitaxial strain is a powerful means to engineer emergent phenomena in thin films and heterostructures. Here, we demonstrate that KTaO3, a cubic perovskite in bulk form, can be epi…
Large phonon-drag thermopower polarity reversal in Ba-doped KTaO3
Mohamed Nawwar, Samuel Poage, Tobias Schwaigert +6
This study reports the observation of phonon-drag thermopower polarity reversal in Ba-doped KTaO3 thin films, mediated by electron-phonon Umklapp scattering. Epitaxial films with d…
Electrostatic control of quantum phases in KTaO3-based planar constrictions
Jordan T. McCourt, Ethan G. Arnault, Merve Baksi +5
Two-dimensional electron gases (2DEGs) formed at complex oxide interfaces offer a unique platform to engineer quantum nanostructures. However, scalable fabrication of locally addre…
Superconducting vacancy-ordered rock-salt NbO films
Jeong Rae Kim, Sandra Glotzer, Evan Krysko +5
We report molecular beam epitaxy synthesis of vacancy-ordered rocksalt NbO thin films which display superconductivity. A comparative study of substrates identifies AlO (000…
Superconductivity in tin telluride films grown by molecular beam epitaxy
Antonio Gonzalez, Samuel J. Poage, Bernardo Langa +7
The intersection of superconductivity and ferroelectricity hosts a wide range of exotic quantum phenomena. Here, we report on the observation of superconductivity in high-quality t…
Violation of Pauli Limit at KTaO3(110) Interfaces
Samuel J. Poage, Xueshi Gao, Merve Baksi +7
The superconducting order parameter at the KTaO3 interfaces and its dependence on interface orientation remains a subject of debate. The superconductivity at these interfaces exhib…
Surface and Bulk Two-Level System Losses in Lithium Niobate Acoustic Resonators
Rachel G. Gruenke-Freudenstein, Erik Szakiel, Gitanjali P. Multani +7
Lithium niobate (LN) is a promising material for building acoustic resonators used in quantum applications, but its performance is limited by poorly understood material defects cal…
Superconductivity in Substitutional Ga-Hyperdoped Ge Epitaxial Thin Films
Julian A. Steele, Patrick J. Strohbeen, Carla Verdi +12
Doping-induced superconductivity in group IV elements may enable quantum functionalities in material systems accessible with well-established semiconductor technologies. Non-equili…
High temperature diffusion enabled epitaxy of the Ti-O system
Jeong Rae Kim, Sandra Glotzer, Adrian Llanos +2
High temperatures promote kinetic processes which can drive crystal synthesis towards ideal thermodynamic conditions, thereby realizing samples of superior quality. While accessing…
Monoclinic LaSb Superconducting Thin Films
Adrian Llanos, Giovanna Campisi, Veronica Show +5
Rare-earth diantimondes exhibit coupling between structural and electronic orders which are tunable under pressure and temperature. Here we present the discovery of a new polymorph…
Supercell formation in epitaxial rare-earth ditelluride thin films
Adrian Llanos, Salva Salmani-Rezaie, Jinwoong Kim +3
Square net tellurides host an array of electronic ground states and commonly exhibit charge-density-wave ordering. Here we report the epitaxy of DyTe on atomically flat MgO…
Enhanced Critical Field of Superconductivity at an Oxide Interface
Athby H. Al-Tawhid, Samuel J. Poage, Salva Salmani-Rezaie +6
The nature of superconductivity and its interplay with strong spin-orbit coupling at the KTaO3(111) interfaces remains a subject of debate. To address this problem, we grew epitaxi…
Molecular Beam Epitaxy of KTaO
Tobias Schwaigert, Salva Salmani-Razaie, Matthew R. Barone +6
Strain-engineering is a powerful means to tune the polar, structural, and electronic instabilities of incipient ferroelectrics. KTaO3 is near a polar instability and shows anisotro…
Tracking ultrafast change of multiterahertz broadband response functions in a photoexcited Dirac semimetal CdAs thin film
Natsuki Kanda, Yuta Murotani, Takuya Matsuda +5
The electromagnetic response of Dirac semimetals in the infrared and terahertz frequency ranges is attracting growing interest for potential applications in optoelectronics and non…
Order-Disorder Ferroelectric Transition of Strained SrTiO3
Salva Salmani-Rezaie, Kaveh Ahadi, William M. Strickland +1
SrTiO3 is an incipient ferroelectric that is believed to exhibit a prototype displacive, soft mode ferroelectric transition when subjected to mechanical stress or alloying. We use…
Possible signatures of mixed-parity superconductivity in doped polar SrTiO3 films
Timo Schumann, Luca Galletti, Hanbyeol Jeong +4
Superconductors that possess both broken spatial inversion symmetry and spin-orbit interactions exhibit a mix of spin singlet and triplet pairing. Here, we report on measurements o…
Point group symmetry of cadmium arsenide thin films determined by convergent beam electron diffraction
Honggyu Kim, Manik Goyal, Salva Salmani-Rezaie +4
Cadmium arsenide (Cd3As2) is one of the first materials to be discovered to belong to the class of three-dimensional topological semimetals. Reported room temperature crystal struc…