Showing 2019 · cond-mat.mtrl-sciShow all

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cond-mat.mtrl-sci2019★ 218 cited

Controlling spin current polarization through non-collinear antiferromagnetism

T. Nan, C. X. Quintela, J. Irwin +20

The spin-Hall effect describes the interconversion of charge currents and spin currents, enabling highly efficient manipulation of magnetization for spintronics. Symmetry condition…

cond-mat.mtrl-sci2019★ 3 cited

Materials Relevant to Realizing a Field-Effect Transistor based on Spin-Orbit Torques

Phillip Dang, Zexuan Zhang, Joseph Casamento +6

Spin-orbit torque is a promising mechanism for writing magnetic memories, while field-effect transistors are the gold-standard device for logic operation. The spin-orbit torque fie…

cond-mat.mtrl-sci2019★ 21 cited

Growth of CuFeO Single Crystals by the Optical Floating-Zone Technique

Nora Wolff, Tobias Schwaigert, Dietmar Siche +2

CuFeO single crystals up to 50 mm in length and up to 10 mm in diameter were grown by the optical floating-zone method. Stoichiometric polycrystalline rods with a diameter of 6…

cond-mat.mtrl-sci2019★ 60 cited

Oxygen Incorporation in the MBE growth of ScxGa1-xN and ScxAl1-xN

Joseph Casamento, Huili Grace Xing, Debdeep Jena

Secondary-ion Mass Spectrometry (SIMS) is used to determine impurity concentrations of carbon and oxygen in two scandium containing nitride semiconductor multilayer heterostructure…

cond-mat.mtrl-sci2019★ 9 cited

Non-thermal fluence threshold for femtosecond pulsed x-ray radiation damage in perovskite complex oxide epitaxial heterostructures

Hyeon Jun Lee, Youngjun Ahn, Samuel D. Marks +13

Intense hard x-ray pulses from a free-electron laser induce irreversible structural damage in a perovskite oxide epitaxial heterostructure when pulse fluences exceed a threshold va…

cond-mat.mtrl-sci2019★ 29 cited

Infrared nano-spectroscopy of ferroelastic domain walls in hybrid improper ferroelectric CaTiO

K. A. Smith, E. A. Nowadnick, S. Fan +14

Ferroic materials are well known to exhibit heterogeneity in the form of domain walls. Understanding the properties of these boundaries is crucial for controlling functionality wit…

cond-mat.mtrl-sci2019★ 52 cited

Thermal Expansion in Insulating Solids From First Principles

Ethan T. Ritz, Sabrina J. Li, Nicole A. Benedek

In this Tutorial, we describe the use of the quasiharmonic approximation and first-principles density functional theory (DFT) to calculate and analyze the thermal expansion of insu…

cond-mat.mtrl-sci2019★ 23 cited

Effect of strain on magnetic and orbital ordering of LaSrCrO/LaSrMnO heterostructures

Sanaz Koohfar, Alexandru B. Georgescu, Ingrid Hallsteinsen +4

We investigate the effect of strain and film thickness on the orbital and magnetic properties of LaSrCrO (LSCO)/LaSrMnO (LSMO) heterostructures using bulk magnetometry, sof…

cond-mat.mtrl-sci2019★ 99 cited

The Exit-Wave Power-Cepstrum Transform for Scanning Nanobeam Electron Diffraction: Robust Strain Mapping at Subnanometer Resolution and Subpicometer Precision

Elliot Padgett, Megan E. Holtz, Paul Cueva +4

Scanning nanobeam electron diffraction (NBED) with fast pixelated detectors is a valuable technique for rapid, spatially resolved mapping of lattice structure over a wide range of…

cond-mat.mtrl-sci2019★ 35 cited

Magneto-memristive switching in a two-dimensional layer antiferromagnet

Hyun Ho Kim, Shengwei Jiang, Bowen Yang +7

Memristive devices whose resistance can be hysteretically switched by electric field or current are intensely pursued both for fundamental interest as well as potential application…

cond-mat.mtrl-sci2019★ 16 cited

An algorithm for Bragg coherent X-ray diffractive imaging of highly strained nanocrystals

Ziyi Wang, Oleg Gorobtsov, Andrej Singer

By using phase retrieval, Bragg Coherent Diffractive Imaging (BCDI) allows tracking of three-dimensional displacement fields inside individual nanocrystals. Nevertheless, in the pr…

cond-mat.mtrl-sci2019★ 88 cited

Direct comparison of many-body methods for realistic electronic Hamiltonians

Kiel T. Williams, Yuan Yao, Jia Li +22

A large collaboration carefully benchmarks 20 first principles many-body electronic structure methods on a test set of 7 transition metal atoms, and their ions and monoxides. Good…

cond-mat.mtrl-sci2019★ 78 cited

Maximizing the spin-orbit torque efficiency of Pt/Ti multilayers by optimization of the tradeoff between the intrinsic spin Hall conductivity and carrier lifetime

Lijun Zhu, R. A. Buhrman

We report a comprehensive study of the maximization of the spin Hall ratio (θSH) in Pt thin films by the insertion of sub-monolayer layers of Ti to decrease carrier lifetime while…

cond-mat.mtrl-sci2019★ 13 cited

Evolution of structure and magnetism across the metal-insulator transition in the pyrochlore iridate NdCaIrO

Zach Porter, Eli Zoghlin, Samuel Britner +6

We report on the evolution of the thermal metal-insulator transition in polycrystalline samples of NdIrO upon hole-doping via substitution of Ca for Nd. C…

cond-mat.mtrl-sci2019★ 113 cited

Route to high hole mobility in GaN via reversal of crystal-field splitting

Samuel Poncé, Debdeep Jena, Feliciano Giustino

A fundamental obstacle toward the realization of GaN p-channel transistors is its low hole mobility. Here we investigate the intrinsic phonon-limited mobility of electrons and hole…

cond-mat.mtrl-sci2019★ 143 cited

Hole mobility of strained GaN from first principles

Samuel Poncé, Debdeep Jena, Feliciano Giustino

Nitride semiconductors are ubiquitous in optoelectronic devices such as LEDs and Blu-Ray optical disks. A major limitation for further adoption of GaN in power electronics is its l…

cond-mat.mtrl-sci2019★ 45 cited

Molecular Beam Epitaxy Growth of Scandium Nitride on Hexagonal SiC, GaN, and AlN

Joseph Casamento, John Wright, Reet Chaudhuri +2

RF plasma assisted MBE growth of Scandium Nitride (ScN) thin films on GaN (0001)/SiC, AlN (0001)/Al2O3 and on 6H-SiC (0001) hexagonal substrates is found to lead to a face centered…

cond-mat.mtrl-sci2019★ 11 cited

Damping enhancement in coherent ferrite/insulating-paramagnet bilayers

Jacob J. Wisser, Alexander J. Grutter, Dustin A. Gilbert +6

High-quality epitaxial ferrites, such as low-damping MgAl-ferrite (MAFO), are promising nanoscale building blocks for all-oxide heterostructures driven by pure spin current. Howeve…

cond-mat.mtrl-sci2019★ 72 cited

Tunable Magnetic Transition to a Singlet Ground State in a 2D Van der Waals Layered Trimerized Kagomé Magnet

Christopher M. Pasco, Ismail El Baggari, Elisabeth Bianco +2

Incorporating magnetism into two dimensional (2D) van der Waals (VdW) heterostrutures is crucial for the development of functional electronic and magnetic devices. Here we show tha…

cond-mat.mtrl-sci2019★ 13 cited

Single crystal growth and characterization of BaScNbO -- a novel substrate for BaSnO films

C. Guguschev, D. Klimm, M. Brützam +6

Large single crystals of the double-perovskite BaScNbO were grown from the melt for the first time. With a lattice parameter at room temperature of 4.11672(1) Å, this cubic…

cond-mat.mtrl-sci2019★ 107 cited

Unusual Formation of Point Defect Complexes in the Ultra-wide Band Gap Semiconductor beta-Ga2O3

Jared M. Johnson, Zhen Chen, Joel B. Varley +10

Understanding the unique properties of ultra-wide band gap semiconductors requires detailed information about the exact nature of point defects and their role in determining the pr…

cond-mat.mtrl-sci2019★ 47 cited

Grain-boundary structure and segregation in Nb3Sn coatings on Nb for high-performance superconducting radiofrequency cavity applications

Jaeyel Lee, Zugang Mao, Kai He +7

We report on atomic-scale analyses of grain boundary (GB) structures and segregation in Nb3Sn coatings on Nb, prepared by the vapor-diffusion process, for superconducting radiofreq…

cond-mat.mtrl-sci2019★ 20 cited

Imaging uncompensated moments and exchange-biased emergent ferromagnetism in FeRh thin films

Isaiah Gray, Gregory M. Stiehl, John T. Heron +5

Uncompensated moments in antiferromagnets are responsible for exchange bias in antiferromagnet/ferromagnet heterostructures; however, they are difficult to directly detect because…

cond-mat.mtrl-sci2019★ 18 cited

Local Photothermal Control of Phase Transitions for On-demand Room-temperature Rewritable Magnetic Patterning

Antonio B. Mei, Isaiah Gray, Yongjian Tang +6

The ability to make controlled patterns of magnetic structures within a nonmagnetic background is essential for several types of existing and proposed technologies. Such patterns p…