Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Hasung Sim"'
Autor:
Ha-Leem Kim, Takuma Saito, Heejun Yang, Hiroaki Ishizuka, Matthew John Coak, Jun Han Lee, Hasung Sim, Yoon Seok Oh, Naoto Nagaosa, Je-Geun Park
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-6 (2024)
Abstract The thermal Hall effect in magnetic insulators has been considered a powerful method for examining the topological nature of charge-neutral quasiparticles such as magnons. Yet, unlike the kagome system, the triangular lattice has received le
Externí odkaz:
https://doaj.org/article/a594647703e7407d8d5c7775220d0679
Autor:
Marcela Giraldo, Arkadiy Simonov, Hasung Sim, Ahmed Samir Lotfy, Martin Lilienblum, Lea Forster, Elzbieta Gradauskaite, Morgan Trassin, Je-Geun Park, Thomas Lottermoser, Manfred Fiebig
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p 033139 (2024)
The functionality of magnetoelectric multiferroics depends on the formation, size, and coupling of their magnetic and electric domains. Knowing the parameters guiding these criteria is a key effort in the emerging field of magnetoelectric domain engi
Externí odkaz:
https://doaj.org/article/524be3de75dd41399ec4ca2b88c9ae3d
Autor:
Arvind Kumar Yogi, Alexander Yaresko, C. I. Sathish, Hasung Sim, Daisuke Morikawa, Juergen Nuss, Kenji Tsuda, Yukio. Noda, Daniel I. Khomskii, Je-Geun Park
Publikováno v:
Communications Materials, Vol 3, Iss 1, Pp 1-11 (2022)
Combined dimerization and charge ordering are rare to observe in the chemical bonding of a material. Here, a metal-metal phase transition is observed in NaRu2O4, in which site-centered charge ordering coexists with dimerization.
Externí odkaz:
https://doaj.org/article/9eac35affcbf45ff9e57c60ebcfb9c01
Autor:
Pyeongjae Park, Kisoo Park, Joosung Oh, Ki Hoon Lee, Jonathan C. Leiner, Hasung Sim, Taehun Kim, Jaehong Jeong, Kirrily C. Rule, Kazuya Kamazawa, Kazuki Iida, T. G. Perring, Hyungje Woo, S.-W. Cheong, M. E. Zhitomirsky, A. L. Chernyshev, Je-Geun Park
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
In geometrically frustrated magnets small perturbations, such as non-magnetic impurities, can significantly alter the ground state. Here, using inelastic neutron scattering, Park et al. explore such a situation in Al-doped h-YMnO3, where the Aluminum
Externí odkaz:
https://doaj.org/article/f74d5df69d3e459f8a8ce35fe595e19e
Autor:
Joosung Oh, Manh Duc Le, Ho-Hyun Nahm, Hasung Sim, Jaehong Jeong, T. G. Perring, Hyungje Woo, Kenji Nakajima, Seiko Ohira-Kawamura, Zahra Yamani, Y. Yoshida, H. Eisaki, S. -W. Cheong, A. L. Chernyshev, Je-Geun Park
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-6 (2016)
The properties of magnetic, crystalline solids can be described in terms of quantum particles of spin-wave and lattice-vibration energy, known as magnons and phonons respectively. Here, the authors show that strong magnon-phonon coupling in a noncoll
Externí odkaz:
https://doaj.org/article/8eb6c15cb9654623a45b141d69258ea1
Autor:
Seongsu Lee, Sejun Park, Soonchil Lee, Je-Geun Park, Sumin Lim, Helen E. Maynard-Casely, Hasung Sim, Kisoo Park
Publikováno v:
Physical Review B. 102
The effects of nonmagnetic Al impurities on a magnetic bath ${\mathrm{YMnO}}_{3}$ are studied by magnetization, heat capacity, neutron diffraction, and NMR measurements. Suppression of the N\'eel order with an increase in the doping rate is evidenced
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24fb67594a95d7c6d25a0ad55b23a164
https://doi.org/10.1103/physrevb.102.184427
https://doi.org/10.1103/physrevb.102.184427
Publikováno v:
Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials. 72:3-19
The hexagonalRMnO3(h-RMnO3) are multiferroic materials, which exhibit the coexistence of a magnetic order and ferroelectricity. Their distinction is in their geometry that both results in an unusual mechanism to break inversion symmetry and also prod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::794749d62bd61a2fa72f85f4fbd44e4e
https://doi.org/10.1107/s2052520615022106
https://doi.org/10.1107/s2052520615022106
Autor:
Urmas Nagel, Toomas Rõõm, Kirill Amelin, Yoshiyuki Yoshida, Je-Geun Park, Hasung Sim, Kisoo Park, Randy Scott Fishman
Publikováno v:
Physical Review B. 98
We measured absorption of THz radiation in ${\mathrm{YFeO}}_{3}$ single crystals at a temperature of 3 K in the magnetic field up to 17 T applied in all three crystallographic directions. Two spin-wave modes were observed at the $\mathrm{\ensuremath{
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6cec7f11d51b622b5efe79ad1b65e83
https://doi.org/10.1103/physrevb.98.174417
https://doi.org/10.1103/physrevb.98.174417
Publikováno v:
Physical Review B. 98
Multiferroic hexagonal manganites ${\mathrm{RMnO}}_{3}$ have a very high ferroelectric transition temperature around and above 1200 K, depending on the rare-earth elements, and a reasonably large electric polarization of about $5.5\phantom{\rule{0.16
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b5a7f2ce74b8af237da3acd582980cf
https://doi.org/10.1103/physrevb.98.085132
https://doi.org/10.1103/physrevb.98.085132
Publikováno v:
Physical Review B. 98
Synthesis of complex materials can lead to discoveries of novel emergent phenomena as well as innovative applications. Combined electrical resistivity, specific heat, susceptibility, and single-crystal x-ray diffraction studies reveal that Na${}_{2.7
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f877b58767d096e3f3f5b92744e63583
https://doi.org/10.1103/physrevb.98.085113
https://doi.org/10.1103/physrevb.98.085113