Search Results - "Kevan, S. D"
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Nanosecond X-Ray Photon Correlation Spectroscopy on Magnetic Skyrmions
Published in Physical review letters (09-08-2017)“…We report an x-ray photon correlation spectroscopy method that exploits the recent development of the two-pulse mode at the Linac Coherent Light Source. By…”
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2
Scaling of domain cascades in stripe and skyrmion phases
Published in Nature communications (30-04-2019)“…The origin of deterministic macroscopic properties often lies in microscopic stochastic motion. Magnetic fluctuations that manifest as domain avalanches and…”
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3
Influence of structural disorder on magnetic domain formation in perpendicular anisotropy thin films
Published in Physical review. B, Condensed matter and materials physics (24-05-2013)“…Using a combination of resonant soft x-ray scattering, magnetometry, x-ray reflectivity, and microscopy techniques we have investigated the magnetic properties…”
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Publisher Correction: Scaling of domain cascades in stripe and skyrmion phases
Published in Nature communications (21-05-2019)“…The original version of this Article contained an error in Fig. 4d, in which the label of the region to the left of the white dashed lines incorrectly read…”
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5
Mechanism of gap opening in a triple-band peierls system: In atomic wires on Si
Published in Physical review letters (03-09-2004)“…One dimensional (1D) metals are unstable at low temperature undergoing a metal-insulator transition coupled with a periodic lattice distortion, a Peierls…”
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6
Surface Fermi contours and phonon anomalies at the surface of the random alloy
Published in Journal of physics communications (01-07-2021)“…Abstract The impact of compositional disorder on physical properties is a subject of prime focus in many materials systems. In this paper, we report…”
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Mapping spatial and field dependence of magnetic domain memory by soft X-ray speckle metrology
Published in Journal of synchrotron radiation (01-05-2012)“…The occurrence of magnetic domain memory has been observed in ferromagnets, either induced by structural defects or by exchange couplings. Being able to…”
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Evolution of the electronic structure in Mo1−xRex alloys
Published in New journal of physics (2013)“…We report a detailed experimental and theoretical study of the electronic structure of Mo1−xRex random alloys. We have measured electronic band dispersions for…”
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Altered magnetism and new electronic length scales in magneto-electric La2 3Sr1 3MnO3-BiFeO3 heterointerface
Published in New journal of physics (20-11-2013)“…We map out the charge-spin density profile of magneto-electric La2 3Sr1 3MnO3 (LSMO)-BiFeO3 (BFO) heterostructure using soft x-ray resonant magnetic…”
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10
Laguerre–Gauss and Hermite–Gauss soft X-ray states generated using diffractive optics
Published in Nature photonics (01-03-2019)“…Light’s capacity to carry angular momentum is integral to our knowledge of physics and ability to probe matter. In addition to spin, photons can occupy…”
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11
Surface states and spin density wave periodicity in Cr(110) films
Published in New journal of physics (06-02-2008)Get full text
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Spin-resolved photoemission of surface states of W(110)-(1 x 1)H
Published in Physical review letters (18-11-2002)“…The surface electronic states of W(110)-(1 x 1)H have been measured using spin- and angle-resolved photoemission. We directly demonstrate that the surface…”
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13
Electron states and the spin density wave phase diagram in Cr(1 1 0) films
Published in New journal of physics (29-04-2005)Get full text
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14
Disorder-induced microscopic magnetic memory
Published in Physical review letters (14-01-2005)“…Using coherent x-ray speckle metrology, we have measured the influence of disorder on major loop return point memory (RPM) and complementary point memory (CPM)…”
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15
Enhanced electron–phonon coupling at metal surfaces
Published in Progress in surface science (01-12-2003)“…Recent advances in experimental techniques and theoretical capabilities associated with the study of surfaces show promise for producing in unprecedented…”
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Synthesizing skyrmion bound pairs in Fe-Gd thin films
Published in Applied physics letters (11-07-2016)“…We show that properly engineered amorphous Fe-Gd alloy thin films with perpendicular magnetic anisotropy exhibit bound pairs of like-polarity, opposite…”
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Soft x-ray ptychography studies of nanoscale magnetic and structural correlations in thin SmCo5 films
Published in Applied physics letters (29-02-2016)“…High spatial resolution magnetic x-ray spectromicroscopy at x-ray photon energies near the cobalt L3 resonance was applied to probe an amorphous 50 nm thin…”
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18
Spin-Orbit Coupling Induced Surface Band Splitting in Li/W(110) and Li/Mo(110)
Published in Physical review letters (17-05-1999)Get full text
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Unusual spectral behavior of charge-density waves with imperfect nesting in a quasi-one-dimensional metal
Published in Physical review letters (08-08-2003)“…Low-temperature electronic properties of the charge-density-wave system NbSe3 are reported from angle-resolved photoemission at 15 K. The effect of two…”
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Records on floral biology and visitors of Jacquemontia montana (Moric.) Meisn. (Convolvulaceae) in Mucugê, Bahia
Published in Brazilian journal of biology (01-08-2010)“…We present the first records on pollination biology of Jacquemontia montana (Moric.) Meisn. (Convolvulaceae), a widespread climber in the Chapada Diamantina…”
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