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New Journal of Physics, ISSN 1367-2630, 09/2007, Volume 9, Issue 9, pp. 356 - 356
Phase transitions between the quantum spin Hall ( QSH) and the insulator phases in three dimensions ( 3D) are studied. We find that in inversion-asymmetric... 
BISMUTH THIN-FILMS | PHYSICS, MULTIDISCIPLINARY | TO-SEMICONDUCTOR TRANSITION | FERMI SYSTEMS | Physics - Mesoscale and Nanoscale Physics
Journal Article
2017, Diversity and Commonality in Animals, ISBN 9784431564676
This book presents a new, detailed examination that explains how elegant brains have been shaped in evolution. It consists of 19 chapters written by academic... 
Neurosciences | Evolutionary biology | Zoology | Life sciences
Web Resource
Nature Communications, ISSN 2041-1723, 01/2017, Volume 8, Issue 1, pp. 14022 - 14022
In nodal-line semimetals, the gaps close along loops in k space, which are not at high-symmetry points. Typical mechanisms for the emergence of nodal lines... 
TRANSITION | PHASE | WEYL FERMION SEMIMETAL | MULTIDISCIPLINARY SCIENCES | DISCOVERY | ARCS
Journal Article
Physical Review B - Condensed Matter and Materials Physics, ISSN 1098-0121, 01/2009, Volume 79, Issue 4
Journal Article
PHYSICAL REVIEW LETTERS, ISSN 0031-9007, 08/2019, Volume 123, Issue 6, pp. 066404 - 066404
In spatially periodic Hermitian systems, such as electronic systems in crystals, the band structure is described by the band theory in terms of the Bloch wave... 
EXCEPTIONAL POINTS | BOUND-STATES | PHYSICS, MULTIDISCIPLINARY | PARITY-TIME SYMMETRY | Electronic systems | Energy levels | Band structure of solids | Bloch waves | Brillouin zones | Banded structure | Bloch band | Band theory | Wave functions | Crystal structure | Index Medicus | Physics - Mesoscale and Nanoscale Physics
Journal Article
Science, ISSN 0036-8075, 9/2003, Volume 301, Issue 5638, pp. 1348 - 1351
Although microscopic laws of physics are invariant under the reversal of the arrow of time, the transport of energy and information in most devices is an... 
Semiconductors | Lead | Conductivity | Momentum | Ions | Reports | Kinetics | Electric current | Electric fields | Room temperature | Electrons | CONDUCTANCE | SEMICONDUCTOR | RESONANCE | INJECTION | MULTIDISCIPLINARY SCIENCES | Quantum electronics | Research | Physics | Quantum theory | Electromagnetism
Journal Article
Physical Review Letters, ISSN 0031-9007, 2006, Volume 97, Issue 23, pp. 236805 - 236805
We show that the spin-Hall conductivity in insulators is related to a magnetic susceptibility representing the strength of the spin-orbit coupling. We use this... 
BISMUTH THIN-FILMS | TEMPERATURE | PHYSICS, MULTIDISCIPLINARY | GRAPHITE | DIAMAGNETISM | TO-SEMICONDUCTOR TRANSITION | LARGE MAGNETORESISTANCE
Journal Article
Journal of the Physical Society of Japan, ISSN 0031-9015, 01/2017, Volume 86, Issue 1, pp. 1 - 1
  We review recent developments in theories and experiments on the magnon Hall effect. We derive the thermal Hall conductivity of magnons in terms of the Berry... 
Conductivity | Experiments | Physics | Electrons | Spin waves | Hall effect | Berries | Magnons | Mathematical analysis | Curvature
Journal Article
Physical Review Letters, ISSN 0031-9007, 05/2011, Volume 106, Issue 19, pp. 197202 - 197202
We theoretically show that the magnon wave packet has a rotational motion in two ways: a self-rotation and a motion along the boundary of the sample (edge... 
TRANSPORT-COEFFICIENTS | PHYSICS, MULTIDISCIPLINARY | CRYSTALS | DYNAMICS | SPECTRUM | SPIN-WAVES | BERRY-PHASE
Journal Article
Journal of the Physical Society of Japan, ISSN 0031-9015, 2018, Volume 87, Issue 4, p. 41002
In topological semimetals such as Weyl, Dirac, and nodal-line semimetals, the band gap closes at points or along lines in k space which are not necessarily... 
SPIN HALL | PHYSICS, MULTIDISCIPLINARY | INSULATOR | WEYL FERMION SEMIMETAL | PHASE-TRANSITION | TAAS | DIRAC SEMIMETAL | BAND-STRUCTURE | POLARIZATION | DISCOVERY | ARCS | Band structure | Metalloids | Mathematical analysis | Brillouin zones | Numerical methods | Materials science | Topology | Band gap | Matter & antimatter | Symmetry | Physics - Materials Science
Journal Article
ISSN 0277-786X, 9/2015, Volume 9551, pp. 95511E - 95511E-1
In electronic systems it is well established that when there is a magnetic field or spontaneous magnetization, the Hall effect, and in some cases the quantum... 
Conference Proceeding
Physical Review B - Condensed Matter and Materials Physics, ISSN 1098-0121, 11/2011, Volume 84, Issue 18
Due to the Berry curvature in momentum space, the magnon wave packet undergoes two types of orbital motions in analogy with the electron system: the... 
TRANSPORT-COEFFICIENTS | PHYSICS, CONDENSED MATTER | CRYSTALS | DYNAMICS | SPECTRUM | SPIN-WAVES | BERRY-PHASE
Journal Article
Nature Physics, ISSN 1745-2473, 09/2017, Volume 13, Issue 9, pp. 829 - 832
Spins can act as mediators to interconvert electricity, light, sound, vibration and heat. Here, we give an overview of the recent advances in different... 
ROOM-TEMPERATURE | TRANSPORT | PHYSICS, MULTIDISCIPLINARY | INJECTION | DEMAGNETIZATION | MAGNETIZATION | ELECTRICAL DETECTION | ACCUMULATION | TOPOLOGICAL INSULATOR | FERROMAGNET | CHARGE-CURRENT | Nanoscience | Vibration | Spinning | Conversion | Spintronics
Journal Article
Journal of the Physical Society of Japan, ISSN 0031-9015, 2006, Volume 75, Issue 7, pp. 074713 - 1"-"074713-8
By considering the continuous model for graphene, we analytically study a special gauge field for the edge state. The gauge field explains the properties of... 
Weyl equation | particle-hole symmetry | gauge field | next nearest-neighbor hopping | graphene | edge state | Particle-hole symmetry | Gauge field | Edge state | Graphene | Next nearest-neighbor hopping | PHYSICS, MULTIDISCIPLINARY | SIZE | GRAPHITE | WALLED CARBON NANOTUBES | RIBBONS | PHASE | SHAPE
Journal Article
Hyomen Kagaku, ISSN 0388-5321, 01/2015, Volume 36, Issue 3, pp. 135 - 140
We review various topics on surface physics related with topological insulators. We first explain properties of topological insulators and associated surface... 
Thin films | Cones | Band structure of solids | Mathematical analysis | Superlattices | Insulators | Topology | Wavefunctions
Journal Article
Physical Review Letters, ISSN 0031-9007, 10/2018, Volume 121, Issue 17, pp. 175301 - 175301
Phonon modes in crystals can have angular momenta in general. It nevertheless cancels in equilibrium when the time-reversal symmetry is preserved. In this... 
CRYSTALS | RESONANCE | PHYSICS, MULTIDISCIPLINARY | GAN | FIELD | Electronic systems | Atmospheric pressure | Temperature gradients | Rotating bodies | Angular momentum | Crystals | Nuclei (nuclear physics) | Electron spin | Crystallography | Crystal structure | Physics - Mesoscale and Nanoscale Physics
Journal Article
Physical Review Letters, ISSN 0031-9007, 10/2011, Volume 107, Issue 16, pp. 166805 - 166805
The Dirac cone on a surface of a topological insulator shows linear dispersion analogous to optics and its velocity depends on materials. We consider a... 
GRAPHENE | PHYSICS, MULTIDISCIPLINARY | LENS | HALL CONDUCTANCE | Physics - Mesoscale and Nanoscale Physics
Journal Article
Physical Review B - Condensed Matter and Materials Physics, ISSN 1098-0121, 06/2014, Volume 89, Issue 23
We study dispersions of Fermi arcs in the Weyl semimetal phase by constructing an effective model. We calculate how the surface Fermi-arc dispersions for the... 
PHYSICS, CONDENSED MATTER | QUANTUM SPIN HALL | PHASE-TRANSITION | Metalloids | Transits | Cones | Condensed matter | Insulators | Evolution | Mathematical models | Dispersions | Symmetry
Journal Article
Journal of the Physical Society of Japan, ISSN 0031-9015, 01/2017, Volume 86, Issue 1, p. 11010
We review recent developments in theories and experiments on the magnon Hall effect. We derive the thermal Hall conductivity of magnons in terms of the Berry... 
BRILLOUIN LIGHT-SCATTERING | TRANSPORT-COEFFICIENTS | CONDUCTANCE | MODES | PHYSICS, MULTIDISCIPLINARY | SPINTRONICS | DYNAMICS | QUANTUM MAGNET | SPECTRUM | SPIN-WAVES | BERRY-PHASE
Journal Article
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