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Single‐crystal elastic properties of the spinel phase of Mg2SiO4
The single-crystal elastic moduli of the spinel (gamma) phase of Mg2SiO4 have been experimentally determined from Brillouin spectroscopy at ambient conditions. They are C11 = 327, C44 = 126, and C12Expand
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Single‐crystal X ray study of γ Mg2SiO4
The crystal structure of the spinel polymorph of Mg2SiO4 has been refined using a single crystal synthesized at 220 kbar and 1000°C. The u parameter of the structure with a = 8.0649(1) A isExpand
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Observation of dirac holes and electrons in a topological insulator.
We show that in the new topological-insulator compound Bi(1.5)Sb(0.5)Te(1.7)Se(1.3) one can achieve a surfaced-dominated transport where the surface channel contributes up to 70% of the totalExpand
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Fe2+ and Fe3+ ions distinguishable by x‐ray anomalous scattering: Method and its application to magnetite
A chemical shift of about 5 eV was observed between ferrous and ferric ions in the XANES absorption spectra of FeO and Fe2O3 where the Fe ions coordinate in regular octahedra. Experimental f’e wasExpand
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Electron cotunneling in a semiconductor quantum dot.
We report transport measurements on a semiconductor quantum dot with a small number of confined electrons. In the Coulomb blockade regime, conduction is dominated by cotunneling processes. These canExpand
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Pressure dependence of u parameter in ringwoodite up to 7.9 GPa
X-ray diffraction intensities were measured for single-crystal, spinel structure ringwoodite (γ-Mg1.97SiH0.03O4) at pressures up to 7.9 GPa in the BL-10A synchrotron beam line of the Photon Factory.Expand
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Topological Superconductivity in CuxBi2Se3
A topological superconductor (TSC) is characterized by the topologically-protected gapless surface state that is essentially an Andreev bound state consisting of Majorana fermions. While a TSC hasExpand
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Large linear magnetoresistance in the Dirac semimetal TlBiSSe
The mixed-chalcogenide compound TlBiSSe realizes a three-dimensional (3D) Dirac semimetal state. In clean, low-carrier-density single crystals of this material, we found Shubnikov--de HaasExpand
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X ray absorption coefficients of the elements (Li to Bi, U
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