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99 papers · 1 filter
Topological protection of bound states against the hybridization
Bohm-Jung Yang, Mohammad Saeed Bahramy, Naoto Nagaosa
Topological invariants are conventionally known to be responsible for protection of extended states against disorder. A prominent example is the presence of topologically protected…
Spontaneous atomic ordering and magnetism in epitaxially stabilized double perovskites
Akira Ohtomo, Suvankar Chakraverty, Hisanori Mashiko +2
We have studied the atomic ordering of B-site transition metals and magnetic properties in the pulsed-laser deposited films of La2CrFeO6 (LCFO) and La2VMnO6 (LVMO), whose bulk mate…
Magnetoelasticity in ACr2O4 spinel oxides
V. Kocsis, S. Bordács, D. Varjas +6
Dynamical properties of the lattice structure was studied by optical spectroscopy in ACr2O4 chromium spinel oxide magnetic semiconductors over a broad temperature region of T=10-33…
Strongly spin-orbit coupled two-dimensional electron gas emerging near the surface of polar semiconductors
M. Sakano, M. S. Bahramy, A. Katayama +12
We investigate the two-dimensional (2D) highly spin-polarized electron accumulation layers commonly appearing near the surface of n-type polar semiconductors BiTeX (X = I, Br, and…
Active electromagnetic metamaterial based on spin torque oscillators
Gen Tatara, Hiroaki T. Ueda, Katsuhisa Taguchi +3
We propose theoretically an active material for electromagnetic radiation with frequency of GHz by use of spin-torque oscillators. The origin of the amplification is the energy sup…
Witnessing Quantum Coherence: from solid-state to biological systems
Che-Ming Li, Neill Lambert, Yueh-Nan Chen +2
Quantum coherence is one of the primary non-classical features of quantum systems. While protocols such as the Leggett-Garg inequality (LGI) and quantum tomography can be used to t…