Sodium ion and cobalt charge ordering in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Na</mml:mtext></mml:mrow><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mrow><mml:mtext>CoO</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:mspace width="0.3em" /><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mi>x</mml:mi><mml:mo>∼</mml:mo><mml:mstyle scriptlevel="1"><mml:mfrac bevelled="false"><mml:mn>5</mml:mn><mml:mn>6</mml:mn></mml:mfrac></mml:msty

Foury-Leylekian, P.; Poltavets, Viktor V.; Jaouen, N.; Rueff, Jean‐Pascal; Lorenzo, J. E.; Auban‐Senzier, Pascale; Pasquier, Claude; Mazzoli, Claudio; Greenblatt, Martha

doi:10.1103/physrevb.79.115101

Cited by 11 publications

(11 citation statements)

References 30 publications

(45 reference statements)

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“…It would be interesting to explore more the interplay between structural disorder, CDW and superconductivity in tungsten oxides. Indeed, doping of WO3 leads to the superconductivity below ~ 4 K [36] or CDW state at TCDW ~ 150 K [37]. Results reported in Refs.…”

Section: E Tungsten Oxidesmentioning

confidence: 78%

Unstable and elusive superconductors

Kopelevich

Silva

Camargo

2015

Physica C: Superconductivity and its Applications

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We briefly review earlier and report original experimental results in the context of metastable or possible superconducting materials. We show that applied electric field induces conducting state in Copper Chloride (CuCl) whose characteristics resemble behavior of sliding charge-density-wave(s) (CDW). We discuss whether the sliding CDW or collective transport of similar ordered charge phase(s) may account for the problem of "high-temperature superconductivity" observed in this and other materials, including Cadmium Sulfide (CdS), metal-ammonia solutions, polymers, amorphous carbon and tungsten oxides. We also discuss a local superconductivity that occurs at the surface of graphite and amorphous carbon under deposition of foreign atoms/molecules.Comment: Invited review article published in a special edition on Superconducting Materials in honor of the 95th birthday year of Ted Geballe, edited by M. B. Maple, J. Hirsch, and F. Marsigli

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Section: E Tungsten Oxidesmentioning

confidence: 78%

Unstable and elusive superconductors

Kopelevich

Silva

Camargo

2015

Physica C: Superconductivity and its Applications

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“…Thus, both the charge as well as Na ordering have crucial role on the magnetic and electrical properties of the Na x CoO 2 oxides. A pronounced effect of Na ordering on the transport properties is indeed observed for higher sodium contents 74–77. Theoretical calculations reveal the role of Na potential on magnetic correlations 78.…”

Section: Layered Cobaltates: Naxcoo2mentioning

confidence: 78%

“… Temperature dependence of the resistivity of Na 5/6 CoO 2 measured in the (ab) plane upon cooling (blue curve) and upon heating (red curve) 77…”

Section: Layered Cobaltates: Naxcoo2mentioning

confidence: 99%

Charge Ordering in Cobalt Oxides: Impact on Structure, Magnetic and Transport Properties

Raveau

Seikh

2015

Zeitschrift anorg allge chemie

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This review shows the great impact of charge ordering upon the magnetic and transport properties of mixed valent Co 4+ /Co 3+ and Co 3+ /Co 2+ cobalt oxides. The relationships between charge ordering and physical properties are described for three structural families: the 1385 ordered oxygen deficient perovskites and the Ruddlesden and Popper (RP) derivative La 1.5 Sr 0.5 CoO 4 , the layered Na x CoO 2 series and the "114" CaBaCo 4 O 7 oxide.

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“…This technique has been essential in a number of high-profile cases, as for example the orbital and charge ordering in transition metals [94][95][96][97][98][99][100][101], frustrated magnetism in low dimensional magnetic systems [102,103], multiferroics [104,105], heavy fermion antiferromagnets [106,107], picnide superconductors [108][109][110], magnetic thin films and multilayers [111,112].…”

Section: Discussionmentioning

confidence: 99%

Resonant and magnetic X-ray diffraction by polarized synchrotron radiation

Paolasini

2014

JDN

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Abstract. The aim of these notes is to introduce the experimental methods and theoretical works in the domain of magnetic and resonant x-rays scattering on single crystals to investigate the electronic and magnetic long range order in strongly correlated electron systems. We highlight the role of the x-rays polarization analysis and control to determine the magnetic structure of materials and, more generally, the electronic long range order parameters responsible for the phase transitions.

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Sodium ion and cobalt charge ordering inNaxCoO2(x∼56

Cited by 11 publications

References 30 publications

Unstable and elusive superconductors

Unstable and elusive superconductors

Charge Ordering in Cobalt Oxides: Impact on Structure, Magnetic and Transport Properties

Resonant and magnetic X-ray diffraction by polarized synchrotron radiation

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