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Floating zone furnace equipped with a high power laser of 1kW composed of five smart beams
Yoshio Kaneko, Yoshinori Tokura
A floating zone furnace is a powerful tool for single crystal growth. Here, we report the floating zone furnace using a high power diode laser of 1kW composed of five 200 Watt heat…
Direct observation of cycloidal spin modulation and field-induced transition in Néel-type skyrmion-hosting VOSeO
T. Kurumaji, T. Nakajima, A. Feoktystov +6
We investigate the spin rotational structure of magnetic skyrmions in a tetragonal polar magnet VOSe2O5 via polarized small-angle neutron scattering (SANS). Spin polarization analy…
Topological Nernst effect of the two-dimensional skyrmion lattice
Max Hirschberger, Leonie Spitz, Takuya Nomoto +12
The topological Hall effect (THE) and its thermoelectric counterpart, the topological Nernst effect (TNE), are hallmarks of the skyrmion lattice phase (SkL). We observed the giant…
Ordering phenomena of spin trimers accompanied by large geometrical Hall effect
Shang Gao, Max Hirschberger, Oksana Zaharko +10
The wavefuntion of conduction electrons moving in the background of a non-coplanar spin structure can gain a quantal phase - Berry phase - as if the electrons were moving in a stro…
Quantum anomalous Hall effect driven by magnetic proximity coupling in all-telluride based heterostructure
Ryota Watanabe, Ryutaro Yoshimi, Minoru Kawamura +7
The quantum anomalous Hall effect (QAHE) is an exotic quantum phenomenon originating from dissipation-less chiral channels at the sample edge. While the QAHE has been observed in m…
Interconversion of multiferroic domains and domain walls
E. Hassanpour, M. C. Weber, A. Bortis +6
Materials with long-range order like ferromagnetism or ferroelectricity exhibit uniform, yet differently oriented three-dimensional regions called domains that are separated by two…
Limits of Validity of Rashba Model in BiTeI: A High-field Magneto-optical Study
S. Bordacs, M. Orlita, M. Sikula +2
It was recently shown that BiTeI, a semiconductor with polar crystal structure, possesses a giant spin-splitting of electrons, which has been interpreted in terms of Rashba-type sp…
Large Anomalous Hall Effect in Topological Insulators with Proximitized Ferromagnetic Insulators
Masataka Mogi, Taro Nakajima, Victor Ukleev +9
We report a proximity-driven large anomalous Hall effect in all-telluride heterostructures consisting of ferromagnetic insulator Cr2Ge2Te6 and topological insulator (Bi,Sb)2Te3. De…
Magnetization-polarization cross-control near room temperature in hexaferrite single crystals
Vilmos Kocsis, Taro Nakajima, Masaaki Matsuda +9
Mutual control of the electricity and magnetism in terms of magnetic (H) and electric (E) fields, the magnetoelectric (ME) effect, offers versatile low power-consumption alternativ…
Anomalous Enhancement of Upper Critical Field in Sr2RuO4 Thin Films
M. Uchida, M. Ide, M. Kawamura +4
We report large enhancement of upper critical field Hc2 observed in superconducting Sr2RuO4 thin films. Through dimensional crossover approaching two dimensions, Hc2 except the in-…
Propagating spin excitations along skyrmion strings
S. Seki, M. Garst, J. Waizner +6
Magnetic skyrmions, topological solitons characterized by a two-dimensional swirling spin texture, have recently attracted attention as stable particle-like objects. In a three-dim…