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View article: Extensive hydrogen incorporation is not necessary for superconductivity in topotactically reduced nickelates
Extensive hydrogen incorporation is not necessary for superconductivity in topotactically reduced nickelates Open
A key open question in the study of layered superconducting nickelate films is the role that hydrogen incorporation into the lattice plays in the appearance of the superconducting state. Due to the challenges of stabilizing highly crystall…
View article: Interfacial magnetic characteristics of nearly compensated gadolinium iron garnet
Interfacial magnetic characteristics of nearly compensated gadolinium iron garnet Open
Reports on spin Hall magnetoresistance, magnonic spin currents from thermal gradients, and spin transfer-torque magnetic random-access memory using compensated ferrimagnets largely discuss bulk magnetization but lack consideration of depth…
View article: Hydrogen is not necessary for superconductivity in topotactically reduced nickelates
Hydrogen is not necessary for superconductivity in topotactically reduced nickelates Open
A key open question in the study of layered superconducting nickelate films is the role that hydrogen incorporation into the lattice plays in the appearance of the superconducting state. Due to the challenges of stabilizing highly crystall…
View article: First-order phase transition versus spin-state quantum-critical scenarios in strain-tuned epitaxial cobaltite thin films
First-order phase transition versus spin-state quantum-critical scenarios in strain-tuned epitaxial cobaltite thin films Open
Pr-containing perovskite cobaltites exhibit unusual valence transitions, coupled to coincident structural, spin-state, and metal-insulator transitions. Heteroepitaxial strain was recently used to control these phenomena in the model ${({\m…
View article: First-order phase transition vs. spin-state quantum-critical scenarios in strain-tuned epitaxial cobaltite thin films
First-order phase transition vs. spin-state quantum-critical scenarios in strain-tuned epitaxial cobaltite thin films Open
Pr-containing perovskite cobaltites exhibit unusual valence transitions, coupled to coincident structural, spin-state, and metal-insulator transitions. Heteroepitaxial strain was recently used to control these phenomena in the model (Pr$_{…
View article: Exchange‐Biased Quantum Anomalous Hall Effect
Exchange‐Biased Quantum Anomalous Hall Effect Open
The quantum anomalous Hall (QAH) effect is characterized by a dissipationless chiral edge state with a quantized Hall resistance at zero magnetic field. Manipulating the QAH state is of great importance in both the understanding of topolog…
View article: Nitrogen-Based Magneto-ionic Manipulation of Exchange Bias in CoFe/MnN Heterostructures
Nitrogen-Based Magneto-ionic Manipulation of Exchange Bias in CoFe/MnN Heterostructures Open
Electric field control of the exchange bias effect across ferromagnet/antiferromagnet (FM/AF) interfaces has offered exciting potentials for low-energy-dissipation spintronics. In particular, the solid-state magneto-ionic means is highly a…
Absence of magnetic interactions in Ni–Nb ferromagnet–superconductor bilayers Open
Studies of ferromagnet-superconductor hybrid systems have uncovered magnetic interactions between the competing electronic orderings. The electromagnetic (EM) proximity effect predicts the formation of a spontaneous vector potential inside…
View article: Nitrogen-Based Magneto-Ionic Manipulation of Exchange Bias in CoFe/MnN Heterostructures
Nitrogen-Based Magneto-Ionic Manipulation of Exchange Bias in CoFe/MnN Heterostructures Open
Electric field control of the exchange bias effect across ferromagnet/antiferromagnet (FM/AF) interfaces has offered exciting potentials for low-energy-dissipation spintronics. In particular, the solid state magneto-ionic means is highly a…
View article: Correction to Topological Surface State Annihilation and Creation in SnTe/Cr<sub><i>x</i></sub>(BiSb)<sub>2–<i>x</i></sub>Te<sub>3</sub> Heterostructures
Correction to Topological Surface State Annihilation and Creation in SnTe/Cr<sub><i>x</i></sub>(BiSb)<sub>2–<i>x</i></sub>Te<sub>3</sub> Heterostructures Open
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionCorrection to Topological Surface State Annihilation and Creation in SnTe/Crx(BiSb)2–xTe3 HeterostructuresPeng Deng*Peng DengDepartment of E…
View article: Exchange-biased quantum anomalous Hall effect
Exchange-biased quantum anomalous Hall effect Open
The quantum anomalous Hall (QAH) effect is characterized by a dissipationless chiral edge state with a quantized Hall resistance at zero magnetic field. Manipulating the QAH state is of great importance in both the understanding of topolog…
View article: Engineering Magnetic Anisotropy and Emergent Multidirectional Soft Ferromagnetism in Ultrathin Freestanding LaMnO<sub>3</sub> Films
Engineering Magnetic Anisotropy and Emergent Multidirectional Soft Ferromagnetism in Ultrathin Freestanding LaMnO<sub>3</sub> Films Open
We report the combination of small coercive fields and weak magnetic anisotropy makes soft ferromagnetic films extremely useful for nanoscale devices that need to easily switch spin directions. However, soft ferromagnets are relatively rar…
View article: Tailoring Magnetic Exchange Interactions in Ferromagnet-Intercalated MnBi2Te4 Superlattices
Tailoring Magnetic Exchange Interactions in Ferromagnet-Intercalated MnBi2Te4 Superlattices Open
The intrinsic magnetic topological insulator MnBi 2 Te 4 (MBT) has provided a platform for the successful realization of exotic quantum phenomena. To broaden the horizons of MBT-based material systems, we intercalate ferromagnetic MnTe lay…
View article: Room-Temperature Valence Transition in a Strain-Tuned Perovskite Oxide
Room-Temperature Valence Transition in a Strain-Tuned Perovskite Oxide Open
Cobalt oxides have long been understood to display intriguing phenomena known as spin-state crossovers, where the cobalt ion spin changes vs. temperature, pressure, etc. A very different situation was recently uncovered in praseodymium-con…
View article: Observation of anti-damping spin-orbit torques generated by in-plane and out-of-plane spin polarizations in MnPd3
Observation of anti-damping spin-orbit torques generated by in-plane and out-of-plane spin polarizations in MnPd3 Open
High spin-orbit torques (SOTs) generated by topological materials and heavy metals interfaced with a ferromagnetic layer show promise for next generation magnetic memory and logic devices. SOTs generated from the in-plane spin polarization…
Distortions to the penetration depth and coherence length of superconductor/normal-metal superlattices Open
Superconducting ($S$) thin film superlattices composed of Nb and a normal\nmetal spacer ($N$) have been extensively utilized in Josephson junctions given\ntheir favorable surface roughness compared to Nb films of comparable thickness.\nIn …
View article: Manipulation of Coupling and Magnon Transport in Magnetic Metal-Insulator Hybrid Structures
Manipulation of Coupling and Magnon Transport in Magnetic Metal-Insulator Hybrid Structures Open
Ferromagnetic metals and insulators are widely used for generation, control, and detection of magnon spin signals. Most magnonic structures are based primarily on either magnetic insulators or ferromagnetic metals, while heterostructures i…
Investigation on the structural property of the sputtered hcp-phase boron nitride tunnel barrier for spintronic applications Open
Recently, two-dimensional (2D) materials have attracted considerable interest for use in spintronic applications, especially hexagonal close-packed (hcp)-phase boron nitride (BN) as a tunnel barrier. In this paper, we experimentally invest…
Dysprosium Iron Garnet Thin Films with Perpendicular Magnetic Anisotropy on Silicon Open
Magnetic insulators, such as the rare‐earth iron garnets, are promising materials for energy‐efficient spintronic memory and logic devices, and their anisotropy, magnetization, and other properties can be tuned over a wide range through se…
Ferromagnetic van der Waals compound MnSb$_{1.8}$Bi$_{0.2}$Te$_4$ Open
The intersection of topology and magnetism represents a new playground to discover novel quantum phenomena and device concepts. In this work, we show that a van der Waals compound MnSb$_{1.8}$Bi$_{0.2}$Te$_4$ exhibits a ferromagnetic groun…
Nonvolatile Ionic Modification of the Dzyaloshinskii-Moriya Interaction Open
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Effects of field annealing on MnN/CoFeB exchange bias systems Open
We report the effects of nitrogen diffusion on exchange bias in MnN/CoFeB heterostructures as a function of MnN thickness and field-annealing temperature. We find that competing effects occur in which high-temperature annealing enhances ex…
Demonstration of Ru as the 4th ferromagnetic element at room temperature Open
Development of novel magnetic materials is of interest for fundamental studies and applications such as spintronics, permanent magnetics, and sensors. We report on the first experimental realization of single element ferromagnetism, since …
High Anisotropy Magnetic Materials for Data Storage and Spintronic Memory Open
University of Minnesota Ph.D. dissertation. January 2018. Major: Electrical/Computer Engineering. Advisor: Jian-Ping Wang. 1 computer file (PDF); x, 122 pages.
Room-temperature perpendicular magnetization switching through giant spin-orbit torque from sputtered BixSe(1-x) topological insulator material Open
The spin-orbit torque (SOT) arising from materials with large spin-orbit coupling promises a path for ultra-low power and fast magnetic-based storage and computational devices. We investigated the SOT from magnetron-sputtered BixSe(1-x) th…
Molecular dynamic simulation study of plasma etching L1 FePt media in embedded mask patterning (EMP) process Open
Plasma etching process of single-crystal L10-FePt media [H. Wang et al., Appl. Phys. Lett. 102(5) (2013)] is studied using molecular dynamic simulation. Embedded-Atom Method [M. S. Daw and M. I. Baskes, Phy. Rev. B 29, 6443 (1984); X. W. Z…