Correlation between Fermi surface transformations and superconductivity in the electron-doped high-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>T</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math>superconductor<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Nd</mml:mi><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Ce</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi>CuO</mml:mi><mm

Helm, Toni; Kartsovnik, M.V.; Proust, Cyril; Vignolle, Baptiste; Putzke, Carsten; Kampert, Erik; Sheikin, I.; Choi, Eun Sang; Brooks, J. S.; Bittner, Nikolaj; Biberacher, W.; Erb, A.; Wosnitza, J.; Gross, Rudolf

doi:10.1103/physrevb.92.094501

Cited by 49 publications

(59 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4, along with a fit yielding m * = 0.43 ± 0.05 m e consistent with both FFT spectrum amplitudes (red data) and analyses at fixed magnetic field (black data); also shown are ±1σ error bars to the best fit (dashed lines). Here F is comparable to that observed in NCCO with x = 0.17 (F NCCO ≈ 250 T) in studies of bulk crystals [21] that show evidence for a quantum critical point at a doping x = 0.145. R H is comparable to that seen in x = 0.17 PCCO films (≈ 0.8 × 10 −9 Ω-m/T) grown and oxygen reduced using other techniques [26,33].…”

supporting

confidence: 81%

“…At 2 K R H = 0.9×10 −9 Ω m/T; assuming a single parabolic band yields a carrier density per CuO 2 layer of n 2D = 4.2 ×10 18 m −2 or 0.66 carriers per Cu. As has been seen for near-optimal doping in both PCCO thin films [25][26][27] and bulk crystals of Nd 2−x Ce x CuO 4 [21], R H changes sign with temperature, consistent with a multi-band FS and possible onset of competing order. (As R H also changes sign with x near optimal doping, the simplistic analysis of the Hall effect discussed here will necessarily be incomplete.)…”

supporting

confidence: 54%

“…However, many issues remain unresolved, including the structure of the FS and nature of its reconstruction and evolution with doping, reconciling quantum oscillation measurements with the observation of Fermi arcs [13,14] in the pseudogap phase, and identifying the true nature of the competing ground state (whether arising from observed magnetic [15,16] charge [17], or predicted d-density wave (DDW) [18]) order). QO have only been observed in a restricted doping range (x = 0.15 -0.17) in n-doped bulk crystals of Nd 2−x Ce x CuO 4 (NCCO) [19][20][21], and found to be consistent with a theoretical picture of DDW-like order [22,23]. Resolving QO in Ce-doped PCCO thin films opens an exciting avenue for continuously studying FS evolution, in particular because thin films allow doping levels beyond the x = 0.17 solubility limit of conventional bulk synthesis techniques.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Shubnikov-de Haas quantum oscillations reveal a reconstructed Fermi surface near optimal doping in a thin film of the cuprate superconductorPr1.86Ce0.14CuO4±δ

et al. 2016

View full text Add to dashboard Cite

We study magnetotransport properties of the electron-doped superconductor Pr2−xCexCuO 4±δ with x = 0.14 in magnetic fields up to 92 T, and observe Shubnikov de-Haas magnetic quantum oscillations. The oscillations display a single frequency F =255±10 T, indicating a small Fermi pocket that is ∼ 1% of the two-dimensional Brillouin zone and consistent with a Fermi surface reconstructed from the large hole-like cylinder predicted for these layered materials. Despite the low nominal doping, all electronic properties including the effective mass and Hall effect are consistent with overdoped compounds. Our study demonstrates that the exceptional chemical control afforded by high quality thin films will enable Fermi surface studies deep into the overdoped cuprate phase diagram.Understanding the ordering phenomena that compete or coexist with superconductivity in the cuprate superconductors remains an outstanding challenge. Central to this effort is identification of Fermi surface (FS) topology and evolution with doping via studies of magnetic quantum oscillations (QO), led by initial observation of QO in hole-doped YBa 2 Cu 3 O 6.5 [1,2]. In hole-doped cuprates, QO studies have shown (1) a large cylindrical hole-like FS consistent with band theory in overdoped Tl 2 Ba 2 CuO 6+δ [3], (2) FS reconstruction and a complex topology in underdoped YBa 2 Cu 3 O 6+δ [4], and (3) strong enhancements in the quasiparticle effective mass [5]; see Refs. 6 and 7 for further reviews. These observations have been interpreted as evidence for competing electronic ordered phases and the influence of quantum critical fluctuations, crossing over to Fermiology consistent with the band-theory picture. Comparable experimental studies of electron-doped cuprates are limited, and precise description of their FS remains an outstanding challenge. Here we report on the FS topology and effective mass in the electron-doped cuprate Pr 2−x Ce x CuO 4±δ (PCCO) with x = 0.14. We observe Shubnikov-de Haas QO in a PCCO thin film measured in extreme magnetic fields up to 92 T, where magnetotransport data (Fig. 1) riers assuming the electron dopant concentration is equal to the Ce content x in Pr 2−x Ce x CuO 4±δ . Photoemission (ARPES) experiments are consistent with a large FS in overdoped n-doped materials [10][11][12], and show evidence for both electron-and hole-like pockets as x decreases below ∼ 0.16. However, many issues remain unresolved, including the structure of the FS and nature of its reconstruction and evolution with doping, reconciling quantum oscillation measurements with the observation of Fermi arcs [13,14] in the pseudogap phase, and identifying the true nature of the competing ground state (whether arising from observed magnetic [15,16]

show abstract

supporting

confidence: 81%

supporting

confidence: 54%

mentioning

confidence: 99%

See 1 more Smart Citation

Shubnikov-de Haas quantum oscillations reveal a reconstructed Fermi surface near optimal doping in a thin film of the cuprate superconductorPr1.86Ce0.14CuO4±δ

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Besides traditional metals, quantum oscillations of magnetoresitance (Shubnikov -de Haas, SdH effect) and magnetization (de Haasvan Alphen effect) have recently proved extremely useful in exploring more complex topical materials such as cuprate [4,5] and iron-based superconductors [6][7][8], topological insulators [9][10][11], heavy fermion compounds [12][13][14], and organic charge-transfer salts [15][16][17]. Here we report on an experimental study of the high-field interlayer magnetoresistance of the layered conductor κ-(BETS) 2 Mn[N(CN) 2 ] 3 , demonstrating the power of the SdH effect in exploring Fermi surface properties of a quasi-two-dimensional correlated electronic system.…”

Section: Introductionmentioning

confidence: 99%

Shubnikov–de Haas oscillations and electronic correlations in the layered organic metal κ-(BETS)2 Mn[N(CN)2]3

Kartsovnik

Zverev

Biberacher

et al. 2017

Low Temperature Physics

Self Cite

View full text Add to dashboard Cite

We present magnetoresistance studies of the quasi-two-dimensional organic conductor κ-(BETS)2Mn[N(CN)2]3, where BETS stands for bis(ethylenedithio)tetraselenafulvalene. Under a moderate pressure of 1.4 kbar, required for stabilizing the metallic ground state, Shubnikov -de Haas oscillations, associated with a classical and a magnetic-breakdown cyclotron orbits on the cylindrical Fermi surface, have been found at fields above 10 T. The effective cyclotron masses evaluated from the temperature dependence of the oscillation amplitudes reveal strong renormalization due to many-body interactions. The analysis of the relative strength of the oscillations corresponding to the different orbits and its dependence on magnetic field suggests an enhanced role of electron-electron interactions on flat parts of the Fermi surface.

show abstract

“…[1][2][3] In the last decade, following their first observation in cuprate high-temperature superconductors, [4] they have been extensively used to investigate the electronic structure of cuprates, both hole- [5] and electrondoped, [6] as well as in Fe-based superconductors. [7][8][9][10][11][12][13] Probably most surprising are the data for the underdoped yttrium barium copper oxide (YBCO) compounds YBa 2 Cu 3 O 6+δ ( [4,[14][15][16][17][18][19][20][21] reviewed in [5,[22][23][24]).…”

mentioning

confidence: 99%

Slow quantum oscillations without fine-grained Fermi surface reconstruction in cuprate superconductors

Grigoriev

Ziman

2017

Jetp Lett.

View full text Add to dashboard Cite

The Fourier transform of the observed magnetic quantum oscillations (MQO) in YBa2Cu3O 6+δ high-temperature superconductors has a prominent low-frequency peak with two smaller neighbouring peaks. The separation and positions of these three peaks are almost independent of doping. This pattern has been explained previously by rather special, exquisitely detailed, Fermi-surface reconstruction. We propose that these MQO have a different origin, and their frequencies are related to the bilayer and inter-bilayer electron hopping rather than directly to the areas of tiny Fermi-surface pockets. Such so-called "slow oscillations" explain more naturally many features of the observed oscillations and allow us to estimate the inter-layer transfer integrals and in-plane Fermi momentum.Magnetic quantum oscillations (MQO) provide a traditional and powerful tool to study the Fermi surface and other electronic structure parameters of various metals. [1][2][3] ([4, 14-21] reviewed in [5,[22][23][24]). The Fourier transform of these quantum oscillations has a prominent peak at frequency F α ≈ 530T with two smaller shoulders at F ± = F α ± ∆F α , where ∆F α ≈ 90T . All these frequencies are much smaller than expected from closed pockets of the Fermi surface(FS). Many different theoretical models have been proposed to explain such a set of frequencies ([25-29], reviewed in [5,22,23]). While these interpretations vary in detail, such as inclusion of spin-orbit or Zeeman splittings, they are all based on Fermi-surface reconstruction due to the periodic potential created by a charge density wave (CDW). A weak, probably, inhomogeneous or fluctuating CDW order has been detected in YBa 2 Cu 3 O 6+δ compounds by X-Ray scattering [30][31][32][33], nuclear magnetic resonance [34,35], and sound velocity measurements [36]. High magnetic fields suppress superconductivity and lead to long-range CDW coherence.[33] Static CDW order can indeed lead to Fermi surface reconstruction, seen in new MQO frequencies, but only if the CDW potential is sufficiently strong. More precisely, the CDW energy gap must be larger than the magnetic-breakdown gapwhere ω c is the cyclotron energy, i.e. the separation between the Landau levels, and E F ∼ 1eV is the Fermi energy of the unreconstructed electron dispersion. The oscillations in cuprates are measured in magnetic fields B higher than 30 tesla, where ∆ MB 40meV is rather large and a fluctuating CDW ordering may not be enough to form new frequencies with amplitudes sufficient for experimental observation. Note that a frequency pattern somewhat similar to that of YBa 2 Cu 3 O 6+δ is observed in the closely related stoichiometric compound YBa 2 Cu 4 O 8 , [37][38][39] where there is no experimental indication of a static superstructure. Even if this CDW is sufficiently strong, it is hard to explain the observed three-peak frequency pattern of MQO in YBCO without additional frequencies of similar amplitude from the CDW wave vector seen in X-ray experiments. [30][31][32][33] Moreover, if FS reconstruction really i...

show abstract

Correlation between Fermi surface transformations and superconductivity in the electron-doped high-TcsuperconductorNd2−xCexCuO

Cited by 49 publications

References 50 publications

Shubnikov-de Haas quantum oscillations reveal a reconstructed Fermi surface near optimal doping in a thin film of the cuprate superconductorPr1.86Ce0.14CuO4±δ

Shubnikov-de Haas quantum oscillations reveal a reconstructed Fermi surface near optimal doping in a thin film of the cuprate superconductorPr1.86Ce0.14CuO4±δ

Shubnikov–de Haas oscillations and electronic correlations in the layered organic metal κ-(BETS)2 Mn[N(CN)2]3

Slow quantum oscillations without fine-grained Fermi surface reconstruction in cuprate superconductors

Contact Info

Product

Resources

About