184 citations · 587 across the 15 of their papers we have counts for
15 papers
Electrical transport properties driven by unique bonding configuration in gamma-GeSe
Jeongsu Jang, Joonho Kim, Dongchul Sung +11
Group-IV monochalcogenides have recently shown great potential for their thermoelectric, ferroelectric, and other intriguing properties. The electrical properties of group-IV monoc…
Sign-tunable anisotropic magnetoresistance and electrically detectable dual magnetic phases in a helical antiferromagnet
Jong Hyuk Kim, Hyun Jun Shin, Mi Kyung Kim +6
The helimagnetic order describes a non-collinear spin texture of antiferromagnets, arising from competing exchange interactions. Although collinear antiferromagnets are elemental b…
Evolution of electronic structure of Ru-doped single-crystal iridiates, SrIrRuO
Seokbae Lee, Yu-Seong Seo, Eilho Jung +7
We investigated Ru-doped single-crystal 5 iridiates, SrIrRuO, at three different doping concentrations ( 0.01, 0.07 and 0.10) using optical spectrosco…
Capping and gate control of anomalous Hall effect and hump structure in ultra-thin SrRuO films
Donghan Kim, Byungmin Sohn, Minsoo Kim +5
Ferromagnetism and exotic topological structures in SrRuO (SRO) induce sign-changing anomalous Hall effect (AHE). Recently, hump structures have been reported in the Hall resis…
Noncollinear antiferromagnetic order in the buckled honeycomb lattice of magnetoelectric Co4Ta2O9 determined by single-crystal neutron diffraction
Sungkyun Choi, Dong Gun Oh, Matthias J. Gutmann +8
Co4Ta2O9 exhibits a three-dimensional magnetic lattice based on the buckled honeycomb motif. It shows unusual magnetoelectric effects, including the sign change and non-linearity.…
Evidence for the Alternating Next-Nearest Neighbor model in the dynamic behavior of a frustrated antiferromagnet
Adra Carr, John Bowlan, 3 +12
X-ray photon correlation spectroscopy (XPCS) enables us to study dynamics of antiferromagnets. Using coherent soft X-ray diffraction, we resonantly probe Mn and Co Bragg peaks in t…
Strong magnetoelectric coupling in mixed ferrimagnetic-multiferroic phases of a double perovskite
M. K. Kim, J. Y. Moon, S. H. Oh +3
Exploring new magnetic materials is essential for finding advantageous functional properties such as magnetoresistance, magnetocaloric effect, spintronic functionality, and multife…
Highly nonlinear magnetoelectric effect in antiferromagnetic Co4Ta2O9 single crystals
Nara Lee, Dong Gun Oh, Sungkyun Choi +10
Strongly correlated materials with multiple order parameters provide unique insights into the fundamental interactions in condensed matter systems and present opportunities for inn…
Antiferromagnet-based spintronic functionality by controlling isospin domains in a layered perovskite iridate
Nara Lee, Eunjung Ko, Hwan Young Choi +6
The novel electronic state of the canted antiferromagnetic (AFM) insulator, strontium iridate (Sr2IrO4) has been well described by the spin-orbit-entangled isospin Jeff = 1/2, but…
Stable hump-like Hall effect and non-coplanar spin textures in SrRuO ultrathin film
Byungmin Sohn, Bongju Kim, Se Young Park +11
We observed a hump-like feature in Hall effects of SrRuO ultrathin films, and systematically investigated it with controlling thicknesses, temperatures and magnetic fields. The…
Electric polarization observed in single crystals of multiferroic Lu2MnCoO6
S. Chikara, J. Singleton, J. Bowlan +5
We report electric polarization and magnetization measurements in single crystals of double perovskite Lu2MnCoO6 using pulsed magnetic fields and optical second harmonic generation…
Signature of high temperature superconductivity in electron doped Sr2IrO4
Y. J. Yan, M. Q. Ren, H. C. Xu +7
Sr2IrO4 was predicted to be a high temperature superconductor upon electron doping since it highly resembles the cuprates in crystal structure, electronic structure and magnetic co…
Strong ferromagnetic-dielectric coupling in multiferroic Lu2CoMnO6 single crystals
N. Lee, H. Y. Choi, Y. J. Jo +3
We have grown single crystals of multiferroic double-perovskite Lu2CoMnO6 and studied the directional dependence of their magnetic and dielectric properties. The ferromagnetic orde…
Giant Magnetic Fluctuations at the Critical Endpoint in Insulating HoMnO3
Y. J. Choi, N. Lee, P. A. Sharma +5
Although abundant research has focused recently on the quantum criticality of itinerant magnets, critical phenomena of insulating magnets in the vicinity of critical endpoints (CEP…
Origin of electromagnon excitations in \textit{R}MnO
R. Valdés Aguilar, M. Mostovoy, A. B. Sushkov +4
The origin of electromagnon excitations in cycloidal \textit{R}MnO is explained in terms of the Heisenberg coupling between spins despite the fact that the static polarization…