Peter D. Johnson
Brookhaven National Laboratory
189 Papers
1.8K Citations
Peter D. Johnson is an academic researcher from Brookhaven National Laboratory. The author has contributed to research in topics: Angle-resolved photoemission spectroscopy & Inverse photoemission spectroscopy. The author has an hindex of 44, co-authored 180 publications.
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Papers
Evidence for Quantum Critical Behavior in the Optimally Doped Cuprate Bi2Sr2CaCu2O8+δ
Tonica Valla,Alexei V. Fedorov,Peter D. Johnson,Barrett Wells,Steven L. Hulbert,Qiang Li,Genda Gu,N. Koshizuka +7 more
TL;DR: In this paper, the photoemission line shapes of the optimally doped cuprate Bi(2)Sr(2),CaCu(2)/O(8+delta) were studied in the direction of a node in the superconducting order parameter by means of very high resolution photo-emission spectroscopy.
596
Many-Body Effects in Angle-Resolved Photoemission: Quasiparticle Energy and Lifetime of a Mo(110) Surface State
TL;DR: In this article, Angle-resolved photoemission spectroscopy (ARPES) has been used to measure the energy and lifetime of the photohole in the experiment.
Coherence incoherence and dimensional crossover in layered strongly correlated metals.
Tonica Valla,Peter D. Johnson,Z. Yusof,Barrett Wells,Qiang Li,Sergio Paulo Martins Loureiro,Robert J. Cava,M. Mikami,Yusuke Mori,M. Yoshimura,Takuya Sasaki +10 more
TL;DR: This work examines two layered metallic systems with angle-resolved photoemission spectroscopy and electronic transport measurements, and finds a crossover in the number of effective dimensions—from two to three—with decreasing temperature, and proposes that this change in effective dimensionality correlates with the presence of coherent quasiparticles within the layers.
203
Quasiparticle spectra, charge-density waves, superconductivity, and electron-phonon coupling in 2H-NbSe2.
Tonica Valla,Alexei V. Fedorov,Peter D. Johnson,Per-Anders Glans,Cormac McGuinness,Kevin E. Smith,Eva Y. Andrei,Helmuth Berger +7 more
TL;DR: In this article, the electron-phonon coupling is identified as a dominant contribution to the quasiparticle self-energy and is shown to be very anisotropic (k dependent) and much stronger than in TaSe2.
Reconstructed Fermi Surface of Underdoped Bi 2 Sr 2 CaCu 2 O 8+δ Cuprate Superconductors
H.-B. Yang,J. D. Rameau,Z.-H. Pan,G. D. Gu,Peter D. Johnson,Helmut Claus,D. G. Hinks,Tim Kidd +7 more
TL;DR: The Fermi surface topologies of underdoped samples of the high-T(c) superconductor Bi2Sr2CaCu2O(8+δ) have been measured with angle resolved photoemission and it is shown that the observed FermI surfaces in the pseudogap phase are actually components of fully enclosed hole pockets.