Peierls stresses (τP) of dislocations 66 slip systems in 52 crystals were estimated from experimental data either by direct extrapolation the critical resolved shear stress (τc) vs. temperature curve to absolute zero temperature, or T0 value at which dependence τc vanishes, based on kink-pair formation enthalpy, is a function τP, described line tension model dislocation. The normalized τP/G (G modulus) values are distributed over four orders magnitude, but for group with same crystal...

We discuss selected and important features of hadronic molecules as one promising forms exotic hadrons near thresholds. Using examples $D \bar D^*$ systems such $X(3872)$ $Z_c$, emphasis is put on the roles pion exchange interaction between them their coupling to intrinsic quark states. Thus emerge admixtures dominant long-range hadron structure short-range structure. For interaction, properties tensor force are analyzed in detail. More coupled channels supply more attractions, heavier...

In order to rationalize the homologous nature of Peierls stress reported in a previous paper (Y. Kamimura et al., Acta Mater. 61 (2013) 294–309), we have calculated numerically stresses via Peierls-Nabarro model (P-N model) planar core dislocation, using ab-initio γ-surface for variety crystals: fcc metals, bcc NaCl type crystals, CsCl ionic crystals and various tetrahedrally coordinated crystals. The obtained γ-surfaces same group are found similar shape height when normalized by materials...

We investigate the hidden-charm pentaquarks as superpositions of $\Lambda_c \bar{D}^{(*)}$ and $\Sigma_c^{(*)} (isospin $I = 1/2$) meson-baryon channels coupled to a $uudc\bar{c}$ compact core by employing an interaction satisfying heavy quark chiral symmetries. Our model can consistently explain masses decay widths $P_c^+(4312)$, $P_c^+(4440)$ $P_c^+(4457)$ with dominant components $\Sigma_c \bar D$ D^\ast$ spin parity assignments $J^P 1/2^{-}, 3/2^{-}$ $1/2^{-}$, respectively. analyze...

In this paper, we investigate the hidden-charm pentaquarks as ${\overline{D}}^{(*)}{\mathrm{\ensuremath{\Lambda}}}_{\mathrm{c}}$ and ${\overline{D}}^{(*)}{\mathrm{\ensuremath{\Sigma}}}_{\mathrm{c}}^{(*)}$ molecules coupled to five-quark states. Furthermore, extend our calculations hidden-bottom sector. The coupling states is treated short range potential, where relative strength for meson-baryon channels determined by structure of We found that resonant and/or bound appear in both charm...

The results of low-temperature, ultrahigh-resolution ultraviolet photoemission studies the electronic structure stable icosahedral ${\mathrm{Al}}_{65}$${\mathrm{Cu}}_{20}$${\mathrm{Fe}}_{15}$, ${\mathrm{Al}}_{64}$${\mathrm{Cu}}_{24}$${\mathrm{Fe}}_{12}$, ${\mathrm{Al}}_{65}$${\mathrm{Cu}}_{20}$${\mathrm{Ru}}_{15}$, ${\mathrm{Al}}_{65}$${\mathrm{Cu}}_{20}$${\mathrm{Ru}}_{7.5}$${\mathrm{Fe}}_{7.5}$, ${\mathrm{Al}}_{65}$${\mathrm{Cu}}_{20}$${\mathrm{Os}}_{15}$,...

The I(JP)=12(12−), 12(32−), and 12(52−) uudcc‾ pentaquarks are investigated by the quark cluster model. This model, which reproduces mass spectra of color-singlet S-wave q3 baryons qq‾ mesons, also enables us to evaluate interaction in color-octet uud configurations. It is shown that isospin-12 spin-32 configuration gains an attraction. states with this have structures around Σc(⁎)D‾(⁎) thresholds: one bound state, two resonances, large cusp found. We argue negative parity pentaquark found...

The recent discoveries and observations of pentaquarks tetraquarks by high-energy accelerator facilities have accumulated evidence the existence multiquark hadrons with heavy quarks, as discussed from early stage prediction quarks. We construct a coupled-channel model for hidden-charm strangeness whose quark content is $udsc\overline{c}$, ${P}_{cs}$, described ${\mathrm{\ensuremath{\Lambda}}}_{c}{\overline{D}}_{s}^{(*)}$,...

The electron transport properties of the thermodynamically stable Al68Cu17Ru15 quasicrystal have been studied through measurements electronic specific heat coefficient and temperature dependence electrical resistivity in range 4.2-300 K. full-width at half maximum for strongest X-ray diffraction line (100000) is reduced to be less than 0.15 nm-1 either by remelting ingot with subsequent furnace cooling or annealing melt-spun ribbon 850 degrees C 24 hours. An apparent improvement...

A metallic amorphous structure model has been constructed on a computer such that an assembly of atoms are spread at random in cube, under the restriction no two closer than given core diameter, and then subjected to relaxation through Johnson's interatomic potential (1964) obtain minimal energy configuration. The results, without depending show both high packing fraction ( eta =0.74) realistic pair distribution function.

The effects of instanton-induced interactions on the H-dibaryon mass are studied. It is found that a strong three-body repulsion will result in weakly bound or unbound H dibaryon with binding energy \ensuremath{\lesssim}10 MeV.

We study effects of instanton-induced quark-quark interactions in baryon spectroscopy and the baryon-baryon interaction. The quark-cluster model is applied to calculating interactions. Results are compared with those one-gluon-exchange propose a new phenomenological which contains both interaction potential.

The structure of an Al-Ni-Co decagonal (d-) quasicrystal has been investigated by scanning tunneling microscopy (STM). STM images with atomic-scale resolution have obtained successfully for the surfaces both tenfold and twofold planes. On surface, large terraces monoatomic-layer steps are formed. symmetry each layer is not but pentagonal two adjacent layers related inversion symmetry. step lines rough, which can be attributed to existence many symmetrically equivalent low-energy steps. atom...

In order to understand the structure of X(3872), |$c\bar {c}$| charmonium core state that couples |$D^0 \bar {D}^{\ast 0}$| and |$D^+ D^{\ast -}$| molecular states is studied. The strengths couplings between hadronic are determined so as reproduce observed mass X(3872). attraction D |$\bar }$| be consistent with |$Z_b^{\pm ,0}$|(10 610) 650) masses. Isospin symmetry breaking introduced by differences neutral charged mesons. X(3872) we have obtained not just a molecule but charmonium–hadronic...

We have computed Peierls stresses of dislocations in a variety crystals by applying simple discretized Peierls–Nabarro model the dislocation using calculated ab-initio γ-surface. In model, disregistry distribution atomic-row pairs facing at glide plane is determined balance between restoring stress due to and internal an array small placed every intermediate position pairs, instead continuous infinitesimal original PN model. been obtained shear under which structure allowed relax. The are...

Electron-diffraction studies have shown that a cubic crystal of ${\mathrm{Zn}}_{6}\mathrm{Sc}$ ($\mathrm{Im}\phantom{\rule{0.2em}{0ex}}\overline{3}$, $a=1.383\phantom{\rule{0.2em}{0ex}}11\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$), which is $1∕1\text{\ensuremath{-}}1∕1\text{\ensuremath{-}}1∕1$ crystalline approximant to the icosahedral quasicrystal, undergoes phase transition at low temperature above $80\phantom{\rule{0.3em}{0ex}}\mathrm{K}$. The accompanies breakdown symmetry as well change...

The $X$(3872) formation and decay processes in the $B$-decay are investigated by a $c\bar c$-two-meson hybrid model. two-meson state consists of $D^0{\bar D}^*{}^0$, $D^+D^{*-}$, $J/\psi\rho$, $J/\psi\omega$ channels. energy-dependent widths $\rho$ $\omega$ mesons introduced. $D$-${\bar D}^*$ interaction is taken to be consistent with lack $B{\bar B}^*$ bound state. coupling between $D{\bar $J/\psi\rho$ or channels obtained from quark $c{\bar c}$-$D{\bar as parameter fit mass. spectrum...

The origin of the narrow peak and symmetry breaking X( 3872) is discussed in our recent paper.In this erratum, we correct figures which show transfer strength from c quarkonium to two-meson states.Figures 5(a) 10(a) Ref. [1] should be replaced by Figures 1 2 respectively.The conclusion unchanged.Fig. 1.The states.Parameter set A with ρ ω meson widths.The c-D D * coupling g weakened 0.9g .Figure figure.