Magnetic vortex lattice in HgBa<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>CuO<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow /><mml:mrow><mml:mn>4</mml:mn><mml:mo>+</mml:mo><mml:mi>δ</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>observed by small-angle neutron scattering

Li, Yuan; Egetenmeyer, N.; Gavilano, J. L.; Barišić, N.; Greven, M.

doi:10.1103/physrevb.83.054507

Cited by 27 publications

(20 citation statements)

References 35 publications

(46 reference statements)

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“…Materials where such a field-driven hexagonal to square VL transition have been observed includes members of the nickelborocarbide superconductors [14][15][16][17][18][19][20][21][22], V 3 Si [23,24], LSCO [25], CeCoIn 5 [26,27], YBCO [4,28], and NCCO [29]. Notable exceptions to this are BSCCO [30,31], and more recently HgBa 2 CuO 4+δ [32]. However, in these two compounds the scattered intensity decreases very rapidly with increasing field, greatly limiting the range of vortex densities over which the VL can be imaged.…”

Section: Vortex Lattice Structurementioning

confidence: 91%

Vortex lattices in type-II superconductors studied by small-angle neutron scattering

Eskildsen

2011

Front. Phys.

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Here we review recent small-angle scattering studies of the vortex lattice in a range of type-II superconductors carried out by our group. Emphasis is placed on providing examples of the kind of information which can be obtained by such measurements, focusing in particular on studies of the vortex lattice structure and form factor in LuNi 2 B 2 C, TmNi 2 B 2 C, CeCoIn 5 and Ba(Fe 0.93 Co 0.07 ) 2 As 2 .

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Section: Vortex Lattice Structurementioning

confidence: 91%

Vortex lattices in type-II superconductors studied by small-angle neutron scattering

Eskildsen

2011

Front. Phys.

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“…Such crystals are of rather high quality, as indicated by the high attainable ZFC/FC ratio 34 and the ability to observe the vortex lattice via small-angle neutron scattering. 35 Four underdoped Hg1201 crystals had been studied in our previous work. 5 The new data reported here were obtained on a fifth underdoped crystal with T c = 75 ± 2 K and an array of about 40 nearly optimally doped crystals (T c = 95 ± 2 K, same as in ref.…”

Section: Experimental Methodsmentioning

confidence: 99%

Magnetic order in the pseudogap phase of HgBa2CuO4+δstudied by spin-polarized neutron diffraction

et al. 2011

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(2008)], this establishes the universal existence of a genuine novel magnetic phase in underdoped cuprates with high maximal Tc (above 90 K at optimal doping). Here we report a systematic study of an underdoped Hg1201 sample (Tc = 75 K), the result of which is consistent with the previously established doping dependence of the magnetic signal. We present an assumption-free analysis of all the data available for Hg1201. Depending on how the hole concentration is estimated, comparison with the results for YBCO leads to different competition scenarios between the q = 0 magnetic order and the spin-density-wave order found in heavily underdoped YBCO.

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“…Samples of comparable quality to those investigated in the present work have enabled stateof-the-art electronic Raman scattering, optical spectroscopy, and hard x-ray experiments [13,[31][32][33][34][35][36][37][38][39]. Such Hg1201 samples feature a small density of vortex pinning centers [40], which has enabled the observation of a magnetic vortex lattice [41]. This paper is organized as follows: In Sec.…”

Section: Introductionmentioning

confidence: 99%

Synchrotron x-ray scattering study of charge-density-wave order in HgBa2CuO4+δ

Tabiś

Bialo

et al. 2017

Phys. Rev. B

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We present a detailed synchrotron x-ray scattering study of the charge-density-wave (CDW) order in simple tetragonal HgBa 2 CuO 4+δ (Hg1201). Resonant soft x-ray scattering measurements reveal that short-range order appears at a temperature that is distinctly lower than the pseudogap temperature and in excellent agreement with a prior transient reflectivity result. Despite considerable structural differences between Hg1201 and YBa 2 Cu 3 O 6+δ , the CDW correlations exhibit similar doping dependencies, and we demonstrate a universal relationship between the CDW wave vector and the size of the reconstructed Fermi pocket observed in quantum oscillation experiments. The CDW correlations in Hg1201 vanish already below optimal doping, once the correlation length is comparable to the CDW modulation period, and they appear to be limited by the disorder potential from unit cells hosting two interstitial oxygen atoms. A complementary hard x-ray diffraction measurement, performed on an underdoped Hg1201 sample in magnetic fields along the crystallographic c axis of up to 16 T, provides information on the form factor of the CDW order. As expected from the single-CuO 2 -layer structure of Hg1201, the CDW correlations vanish at half-integer values of L and appear to be peaked at integer L. We conclude that the atomic displacements associated with the short-range CDW order are mainly planar, within the CuO 2 layers.

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Magnetic vortex lattice in HgBa2CuO4+δobserved by small-angle neutron scattering

Cited by 27 publications

References 35 publications

Vortex lattices in type-II superconductors studied by small-angle neutron scattering

Vortex lattices in type-II superconductors studied by small-angle neutron scattering

Magnetic order in the pseudogap phase of HgBa2CuO4+δstudied by spin-polarized neutron diffraction

Synchrotron x-ray scattering study of charge-density-wave order in HgBa2CuO4+δ

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