R
Robert J. Birgeneau
Researcher at Lawrence Berkeley National Laboratory
Publications - 628
Citations - 23804
Robert J. Birgeneau is an academic researcher from Lawrence Berkeley National Laboratory. The author has contributed to research in topics: Neutron scattering & Phase transition. The author has an hindex of 78, co-authored 587 publications receiving 22686 citations. Previous affiliations of Robert J. Birgeneau include Chalk River Laboratories & Tohoku University.
Papers
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High-energy magnetic excitations from heavy quasiparticles in CeCu$_2$Si$_2$.
Yu Song,Weiyi Wang,Chongde Cao,Zahra Yamani,Y. F. Xu,Yutao Sheng,Wolfgang Löser,Yiming Qiu,Yang Yang,Robert J. Birgeneau,Pengcheng Dai +10 more
TL;DR: In this paper, the authors mapped out the magnetic excitations in cuprate, iron-based and heavy fermion superconductors using inelastic neutron scattering, finding a strongly asymmetric dispersion for less than 1.5
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Midinfrared electroreflectance in La2CuO4+y.
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High-resolution x-ray scattering study of the effect of quenched random disorder on the nematic-smectic-A transition
Mehmet Ramazanoglu,Mehmet Ramazanoglu,Simon Larochelle,Carl W. Garland,Robert J. Birgeneau,Robert J. Birgeneau +5 more
TL;DR: Using high-resolution x-ray scattering, the effect of quenched random disorder (QRD) on the second-order nematic-smectic-A (N-SmA) phase transition in butyloxybenzilidene-octylaniline (4O.8) has been studied and the effective order parameter critical exponent shows an evolution with increasing aerosil gel density.
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Isothermal melting of near-monolayer xenon on single-crystal graphite
TL;DR: In this paper, the melting transition of near-monolayer xenon at three temperatures, namely, 121 K, 140 K and 145 K, was investigated, and it was shown that there is a continuous evolution of the length scale of the positional fluctuations up to approximately 1000 AA.
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Quantum Fluctuations in the Frustrated Antiferromagnet Sr 2 Cu 3 O 4 Cl 2
A. B. Harris,Amnon Aharony,Ora Entin-Wohlman,I. Ya. Korenblit,Robert J. Birgeneau,Y. J. Kim,Y. J. Kim +6 more
TL;DR: In this article, the authors have shown that the band structure of the lamellar cuprates needed to calculate the anisotropic exchange constants used in this paper is similar to that of the weakly coupled CuO planes in the two-dimensional spin-1/2 Heisenberg model.