Thermopower of high-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>T</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>cuprates

Choi, Min Suk; Kim, J. S.

doi:10.1103/physrevb.59.192

Cited by 19 publications

(17 citation statements)

References 25 publications

(24 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the overall Ce doping levels investigated, samples show semiconducting behavior in the sense that the resistivity increases with decreasing temperature. Although there is only a few available reports on the ρ(T) for the NCCO system with a small Ce content, such a feature is consistent with results obtained for polycrystalline samples [17], while in contrast to those reported for single crystals by Xu et al [18] in which a metallic conduction has been observed for 100 K ≤ T ≤ 300 K even in the doping level x = 0.01. As evidenced from A similar type of the conduction may be seen in polycrystalline Nd 1.85 Ce 0.15 CuO 4−y system obtained by quenching [19] and Nd 1.85 Ce 0.15 Cu 1+␦ O 4−y with excess Cu contents of 0 K ≤ δ ≤ 0.03 K [20].…”

Section: Properties Of ρ(T)supporting

confidence: 86%

See 1 more Smart Citation

Thermoelectric power and resistivity in Nd2−Ce CuO4 system

Môri

Kameyama

Enomoto

et al. 2006

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Section: Properties Of ρ(T)supporting

confidence: 86%

“…The power factor P 300 at room temperature estimated from the average values is displayed in the inset of Fig. 1 as a function of Ce content x, showing its values to be of the same order of magnitude as in other reports [17,18], with all the differences in ρ 300 and S 300 themselves.…”

Section: Room Temperature Propertiesmentioning

confidence: 94%

Thermoelectric power and resistivity in Nd2−Ce CuO4 system

Môri

Kameyama

Enomoto

et al. 2006

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…Material family References Mn oxide [49][50][51][52][53][54][55][56][57][58][59][60] ZnO, SrTiO 3 33, [61][62][63][64][65][66][67][68][69][70][71][72] Co oxide 34,35,[73][74][75][76][77] other oxide 28,63,[78][79][80][81][82][83][84][85][86][87][88][89][90][91][92][93][94][95][96] Si-Ge …”

Section: Acknowledgementmentioning

confidence: 99%

Data-Driven Review of Thermoelectric Materials: Performance and Resource Considerations

et al. 2013

View full text Add to dashboard Cite

In this review, we describe the creation of a large database of thermoelectric materials prepared by abstracting information from over 100 publications. The database has over 18 000 data points from multiple classes of compounds, whose relevant properties have been measured at several temperatures. Appropriate visualization of the data immediately allows certain insights to be gained with regard to the property space of plausible thermoelectric materials. Of particular note is that any candidate material needs to display an electrical resistivity value that is close to 1 mW cm at 300 K, i.e., samples should be significantly more conductive than the Mott minimum metallic conductivity. The Herfindahl-Hirschman index, a commonly accepted measure of market concentration, has been calculated from geological data (known elemental reserves) and geopolitical data (elemental production) for much of the periodic table. The visualization strategy employed here allows rapid sorting of thermoelectric compositions with respect to important issues of elemental scarcity and supply risk.

show abstract

“…[143,144] is guaranteed by imposing it as one of the constitutive relations. In spite of this predestined success, though, this scheme fails to reproduce the linear (up to a constant) thermopower, although it claimed the alternate S = a -bT 1/2 dependence to provide an even better fit to the data [142].…”

Section: Holographic Phenomenology: the Cupratesmentioning

confidence: 99%

“…In the optimally doped cuprates, the experimentally measured thermopower, apart from a finite offset term, demonstrates a (negative) linear T-dependence [142]. As regards the Hall Lorenz and Nernst coefficients, the data on the untwinned samples of the optimally doped YBaCuO were fitted into a linear dependence, L H ~ T, whereas ν N was generally found to decrease with increasing T, thus suggesting [ν N ] < 0 [143,144].…”

Section: Holographic Phenomenology: the Cupratesmentioning

confidence: 99%

Demystifying the holographic mystique: A critical review

Khveshchenko¹

2016

Lith. J. Phys.

View full text Add to dashboard Cite

Thus far, in spite of many interesting developments, the overall progress towards a systematic study and classification of various 'strange' metallic states of matter has been rather limited. To that end, it was argued that a recent proliferation of the ideas of holographic correspondence originating from string theory might offer a possible way out of the stalemate. However, after almost a decade of intensive studies into the proposed extensions of the holographic conjecture to a variety of condensed matter problems, the validity of this intriguing approach remains largely unknown. This discussion aims at ascertaining its true status and elucidating the conditions under which some of its predictions may indeed be right (albeit, possibly, for a wrong reason).Keywords: strongly correlated systems, holographic correspondence, transport theory, strange metals, analogue gravity PACS: 71.27.+a Condensed matter holography: the promiseAmong the outstanding grand problems in condensed matter physics is that of a deeper understanding and classification of the so-called 'strange metals' or compressible non-Fermi liquid (NFL) states of the strongly interacting systems. However, despite all the effort and a plethora of the important and nontrivial results obtained with the use of the traditional techniques, this program still remains far from completion.As an alternate approach, over the past decade there have been numerous attempts inspired by the hypothetical idea of holographic correspondence which originated from string/gravity/high energy theory (where it is known under the acronym AdS/ CFT) to adapt its main concepts to various condensed matter (or, even more generally, quantum manybody) systems at finite densities and temperatures [1][2][3][4][5][6][7].In its original context, the bona fide holographic principle postulates that certain d + 1-dimensional ('boundary') quantum field theories (e. g. the maximally supersymmetric SU(N) gauge theory) may allow for a dual description in terms of a string theory which, upon a proper compactification, amounts to a certain d + 2-dimensional ('bulk') supergravity. Moreover, in the strong coupling limit (characterized in terms of the t'Hooft coupling constant λ = g 2 N >> 1) and for a large rank N > > 1 of the gauge symmetry group, the bulk description can be further reduced down to a weakly fluctuating gravity model which can even be treated semiclassically at the lowest (0th) order of the underlying 1/N-expansion.In the practical applications of the holographic conjecture, the partition function of a strongly interacting boundary theory with the Lagrangian L(ϕ a ) would then be approximated by a saddle-point (classical) value of the bulk action described by the Lagrangian L(g μν ,…) which includes gravity and other fields dual to their boundary counterparts [1][2][3][4][5][6][7][8] (1) evaluated with the use of a fixed background metric ,while any quantum corrections would usually be neglected by invoking the small parameter 1/N.

show abstract

Thermopower of high-Tccuprates

Cited by 19 publications

References 25 publications

Thermoelectric power and resistivity in Nd2−Ce CuO4 system

Thermoelectric power and resistivity in Nd2−Ce CuO4 system

Data-Driven Review of Thermoelectric Materials: Performance and Resource Considerations

Demystifying the holographic mystique: A critical review

Contact Info

Product

Resources

About