232 citations · 1k across the 40 of their papers we have counts for
16 papers · 1 filter
Chirality Transfer to the Magnetic Sublattice in the Hybrid Perovskite (R)-/(S)-3-Fluoropyrrolidinium Copper(II) Chloride
Zheng Zhang, Mingyu Xu, Jose L. Gonzalez Jimenez +4
Incorporating chiral organic cations into organic-inorganic hybrid materials has been shown to enable the inorganic sublattice to display chiroptical properties. We report a new tw…
Controlled growth of polar altermagnets via chemical vapor transport
Hiraka Haruhiro, Raktim Datta, Poonam Yadav +9
Altermagnetic properties have been recently proposed in polar magnetic oxides, MMoO (M = Mn, Fe, Co, Ni), where improved characteristics of stronger magnetoelectr…
Impersonating a Superconductor: High-Pressure BaCoO, an Insulating Ferromagnet
Haozhe Wang, Xianghan Xu, Danrui Ni +4
We report the high-pressure synthesis (6 GPa, 1200 C) and ambient pressure characterization of hexagonal HP-BaCoO. The material (with the 2H crystal structure) has a…
Erbium-excess gallium garnets
Chen Yang, Haozhe Wang, Lun Jin +5
A series of garnets of formula Er3+xGa5-xO12 is described, for which we report the crystal structures for both polycrystalline and single-crystal samples. The x limit in the garnet…
Hidden Hydroxides in KOH-Grown BaNiO3 Crystals: A Potential Link to Their Catalytic Behavior
Lun Jin, Haozhe Wang, Xianghan Xu +10
The hexagonal perovskite BaNiO3, prepared via non-ceramic approaches, is known to act as a good catalyst for the oxygen-evolution reaction (OER) in alkaline media. Here we report o…
Topological Surface Magnetism and Neel Vector Control in a Magnetoelectric Antiferromagnet
Kai Du, Xianghan Xu, Choongjae Won +5
Antiferromagnetic states with no stray magnetic fields can enable high-density ultra-fast spintronic technologies. However, the detection and control of antiferromagnetic Neel vect…
Electron Doping of a Double Perovskite Flat-band System
Lun Jin, Nicodemos Varnava, Danrui Ni +5
Electronic structure calculations indicate that the Sr2FeSbO6 double perovskite has a flat-band set just above the Fermi level that includes contributions from ordinary sub-bands w…
A Layered Spin 1/2 polymorph of titanium triiodide
Danrui Ni, Ranuri S. Dissanayaka Mudiyanselage, Xianghan Xu +4
A previously unreported layered spin 1/2 triangular lattice polymorph of TiI3 is described, synthesized under 6 GPa of applied pressure at 900 C, but stable at atmospheric pressure…
Simultaneous imaging of dopants and free charge carriers by STEM-EELS
Hongbin Yang, Andrea Konečná, Xianghan Xu +4
Doping inhomogeneities in solids are not uncommon, but their microscopic observation and understanding are limited due to the lack of bulk-sensitive experimental techniques with hi…
Antiferromagnetic Order in the Rare Earth Halide Perovskites CsEuBr and CsEuCl
Daniel B. Straus, Tomasz Klimczuk, Xianghan Xu +1
Bulk CsEuBr and CsEuCl are experimentally shown to be magnetic semiconductors that order antiferromagnetically at Neel temperatures of 2.0 K and 1.0 K respectively. Given t…
Diagonal and off-diagonal thermal conduction with resonant phonon scattering in
Heejun Yang, Xianghan Xu, Jun Han Lee +3
The coupling between phonon and magnon is ubiquitous in magnetic materials and plays a crucial role in many aspects of magnetic properties, most notably in spintronics. Yet, this a…
Vibrational fingerprints of ferroelectric hafnia
Shiyu Fan, Sobhit Singh, Xianghan Xu +6
Hafnia (HfO2) is a promising material for emerging chip applications due to its high-k dielectric behaviour, suitability for negative capacitance heterostructures, scalable ferroel…
Kinetically-stabilized Ferroelectricity in Bulk Singlecrystalline HfO2:Y without Wake-up Effects
Xianghan Xu, Fei-Ting Huang, Yubo Qi +6
HfO2, a simple binary oxide, holds ultra-scalable ferroelectricity integrable into silicon technology. Polar orthorhombic (Pbc21) form in ultra-thin-films ascribes as the plausible…
Highly tunable ferroelectricity in hybrid improper ferroelectric Sr3Sn2O7
Xianghan Xu, Yazhong Wang, Fei-Ting Huang +3
The successful theoretical prediction and experimental demonstration of hybrid improper ferroelectricity (HIF) provides a new pathway to couple octahedral rotations, ferroelectrici…
Stabilization of competing ferroelectric phases of HfO under epitaxial strain
Yubo Qi, Sobhit Singh, Claudia Lau +6
Hafnia (HfO)-based thin films have promising applications in nanoscale electronic devices due to their robust ferroelectricity and integration with silicon. However, HfO ha…
Vortex Ferroelectric Domains, Large-loop Weak Ferromagnetic Domains, and Their Decoupling in Hexagonal (Lu, Sc)FeO3
Kai Du, Bin Gao, Yazhong Wang +5
The direct domain coupling of spontaneous ferroelectric polarization and net magnetic moment can result in giant magnetoelectric (ME) coupling, which is essential to achieve mutual…