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Enhancement of superconductivity near the pressure-induced semiconductor-metal transition in the BiS₂-based superconductors LnO₀.₅F₀.₅BiS₂ (Ln = La, Ce, Pr, Nd).

Journal of physics. Condensed matter : an Institute of Physics journal

Wolowiec CT, White BD, Jeon I, Yazici D, Huang K, Maple MB.
PMID: 24067344
J Phys Condens Matter. 2013 Oct 23;25(42):422201. doi: 10.1088/0953-8984/25/42/422201. Epub 2013 Sep 25.

Measurements of electrical resistivity were performed between 3 and 300 K at various pressures up to 2.8 GPa on the BiS2-based superconductors LnO0.5F0.5BiS2 (Ln=Pr, Nd). At lower pressures, PrO0.5F0.5BiS2 and NdO0.5F0.5BiS2 exhibit superconductivity with critical temperatures Tc of 3.5...

Absence of superconductivity and valence bond order in the Hubbard-Heisenberg model for organic charge-transfer solids.

Journal of physics. Condensed matter : an Institute of Physics journal

Gomes N, Clay RT, Mazumdar S.
PMID: 23995074
J Phys Condens Matter. 2013 Sep 25;25(38):385603. doi: 10.1088/0953-8984/25/38/385603. Epub 2013 Aug 30.

A frustrated, effective ½-filled band Hubbard-Heisenberg model has been proposed for describing the strongly dimerized charge-transfer solid families κ-(ET)2X and Z[Pd(dmit)2]2. In addition to showing unconventional superconductivity, these materials also exhibit antiferromagnetism, candidate spin-liquid phases, and, in the case...

Spin-glass freezing in a Ni-vermiculite intercalation compound.

Journal of physics. Condensed matter : an Institute of Physics journal

Marcos C, Argüelles A, Khainakov SA, Rodríguez Fernández J, Blanco JA.
PMID: 22872096
J Phys Condens Matter. 2012 Aug 29;24(34):346001. doi: 10.1088/0953-8984/24/34/346001. Epub 2012 Aug 07.

We report on the magnetic properties of a Ni(2+)-vermiculite intercalation compound from Santa Olalla, Huelva (Spain). This modified vermiculite was studied by means of DC and AC magnetic measurements. The existence of two maxima in magnetic susceptibility below 10...

The origin of magnetism in transition metal-doped ZrO2 thin films: experiment and theory.

Journal of physics. Condensed matter : an Institute of Physics journal

Hong NH, Kanoun MB, Goumri-Said S, Song JH, Chikoidze E, Dumont Y, Ruyter A, Kurisu M.
PMID: 24096201
J Phys Condens Matter. 2013 Oct 30;25(43):436003. doi: 10.1088/0953-8984/25/43/436003. Epub 2013 Oct 04.

We have investigated the magnetic properties of Fe/Co/Ni-doped ZrO2 laser ablated thin films in comparison with the known results of Mn-doped ZrO2, which is thought to be a promising material for spintronics applications. It is found that doping with...

Dynamic crossover phenomena in water and other glass-forming liquids.

Journal of physics. Condensed matter : an Institute of Physics journal

Chen SH, Baglioni P.
PMID: 22278993
J Phys Condens Matter. 2012 Feb 15;24(6):060301. doi: 10.1088/0953-8984/24/6/060301.

No abstract available.

Ordering in random overlayers: the correlated cluster mean-field method.

Journal of physics. Condensed matter : an Institute of Physics journal

Chvoj Z, Kudrnovský J, Drchal V.
PMID: 21403218
J Phys Condens Matter. 2010 Oct 06;22(39):395005. doi: 10.1088/0953-8984/22/39/395005. Epub 2010 Sep 10.

We have extended a recently proposed correlated cluster mean-field (CCMF) theory to two-dimensional binary alloys with interactions up to the next-nearest neighbors and investigated their critical behavior. A very good agreement with results from the renormalization group theory was...

Effect of impurity scattering on the linear and nonlinear conductances of quasi-one-dimensional disordered quantum wires by asymmetrically lateral confinement.

Journal of physics. Condensed matter : an Institute of Physics journal

Liu KM, Juang CH, Umansky V, Hsu SY.
PMID: 21403225
J Phys Condens Matter. 2010 Oct 06;22(39):395303. doi: 10.1088/0953-8984/22/39/395303. Epub 2010 Sep 10.

We have studied the linear conductance and source-drain bias spectroscopies of clean and disordered quantum wires (QWs) against thermal cycling and lateral shifting, which change the impurity configuration. Conductance quantization and the zero bias anomaly (ZBA) are robust in...

The new high-temperature surface structure on reduced TiO2(001).

Journal of physics. Condensed matter : an Institute of Physics journal

Busiakiewicz A, Klusek Z, Rogala M, Dabrowski P, Kowalczyk PJ, Datta PK.
PMID: 21403230
J Phys Condens Matter. 2010 Oct 06;22(39):395501. doi: 10.1088/0953-8984/22/39/395501. Epub 2010 Sep 10.

Scanning tunnelling microscopy, ultraviolet photoelectron spectroscopy and current imaging tunnelling spectroscopy (STM/UPS/CITS) were used to study the topographic and electronic structure of a high-temperature structure formed on the TiO(2)(001) surface after heating at 1173 K. The STM images revealed...

Lone-pair states as a key to understanding impact ionization in chalcogenide semiconductors.

Journal of physics. Condensed matter : an Institute of Physics journal

Rubel O, Laughton D.
PMID: 21403299
J Phys Condens Matter. 2010 Sep 08;22(35):355803. doi: 10.1088/0953-8984/22/35/355803. Epub 2010 Aug 13.

Impact ionization of holes and domination of p-conductivity in chalcogenide semiconductors are attributed to a weak electron-phonon interaction inherent to lone-pair states. This argument is supported by first-principles calculations of an acoustical deformation potential in trigonal selenium. Results of...

First-principles study on ferroelectricity at PbTiO3 surface steps.

Journal of physics. Condensed matter : an Institute of Physics journal

Shimada T, Tomoda S, Kitamura T.
PMID: 21403300
J Phys Condens Matter. 2010 Sep 08;22(35):355901. doi: 10.1088/0953-8984/22/35/355901. Epub 2010 Aug 13.

We performed ab initio density functional theory calculations to investigate ferroelectricity at PbTiO(3) surface steps consisting of (100) and (001) surfaces with the polar axis in the [010] direction. Ferroelectricity was enhanced at PbO-terminated surface steps due to enhanced...

Raman study of the antiferromagnetic phase transitions in hexagonal YMnO3 and LuMnO3.

Journal of physics. Condensed matter : an Institute of Physics journal

Vermette J, Jandl S, Mukhin AA, Ivanov VY, Balbashov A, Gospodinov MM, Pinsard-Gaudart L.
PMID: 21403302
J Phys Condens Matter. 2010 Sep 08;22(35):356002. doi: 10.1088/0953-8984/22/35/356002. Epub 2010 Aug 13.

The A(1), E(1) and E(2) Raman active modes in hexagonal YMnO(3) and LuMnO(3) single crystals are studied as a function of temperature and compared with previous measurements. In addition to anharmonicity, some phonon frequencies show below T(N) anomalous temperature...

Metamagnetic transitions in electron-doped single crystals of manganites Ca(1-x)(Ln)(x)MnO3, (Ln = La, Ce; x ≤ 0.12).

Journal of physics. Condensed matter : an Institute of Physics journal

Loshkareva NN, Gerasimov EG, Mushnikov NV, Korolyov AV, Balbashov AM.
PMID: 21403303
J Phys Condens Matter. 2010 Sep 08;22(35):356003. doi: 10.1088/0953-8984/22/35/356003. Epub 2010 Aug 18.

The magnetization curves of Ca(1-x)(Ln)(x)MnO(3) single crystals, where Ln denotes La or Ce, x ≤ 0.12, have been measured in pulsed magnetic fields up to 350 kOe. The metamagnetic transitions for compositions with x = 0.10 and 0.12 have...

Showing 1 to 12 of 12673 entries