Si:P as a laboratory analogue for hydrogen on high magnetic field white dwarf stars

B.N. Murdin (), Juerong Li, M.L.Y. Pang, E.T. Bowyer, K.L. Litvinenko, S.K. Clowes, H. Engelkamp, C.R. Pidgeon, I. Galbraith, N.V. Abrosimov, H. Riemann, S.G. Pavlov, H-W. Hübers and P.G. Murdin
Additional contact information
B.N. Murdin: Advanced Technology Institute and SEPNet, University of Surrey
Juerong Li: Advanced Technology Institute and SEPNet, University of Surrey
M.L.Y. Pang: Advanced Technology Institute and SEPNet, University of Surrey
E.T. Bowyer: Advanced Technology Institute and SEPNet, University of Surrey
K.L. Litvinenko: Advanced Technology Institute and SEPNet, University of Surrey
S.K. Clowes: Advanced Technology Institute and SEPNet, University of Surrey
H. Engelkamp: High Field Magnet Laboratory, Institute for Molecules and Materials, Radboud University Nijmegen, Toernooiveld 7, NL-6525 ED Nijmegen, The Netherlands
C.R. Pidgeon: Institute of Photonics and Quantum Sciences, SUPA, Heriot-Watt University
I. Galbraith: Institute of Photonics and Quantum Sciences, SUPA, Heriot-Watt University
N.V. Abrosimov: Leibniz Institute of Crystal Growth, Max-Born-Straße 2, 12489 Berlin, Germany
H. Riemann: Leibniz Institute of Crystal Growth, Max-Born-Straße 2, 12489 Berlin, Germany
S.G. Pavlov: Institute of Planetary Research, German Aerospace Center (DLR), Rutherfordstraße 2, 12489 Berlin, Germany
H-W. Hübers: Institute of Planetary Research, German Aerospace Center (DLR), Rutherfordstraße 2, 12489 Berlin, Germany
P.G. Murdin: Institute of Astronomy, University of Cambridge

Nature Communications, 2013, vol. 4, issue 1, 1-8

Abstract: Abstract Laboratory spectroscopy of atomic hydrogen in a magnetic flux density of 105 T (1 gigagauss), the maximum observed on high-field magnetic white dwarfs, is impossible because practically available fields are about a thousand times less. In this regime, the cyclotron and binding energies become equal. Here we demonstrate Lyman series spectra for phosphorus impurities in silicon up to the equivalent field, which is scaled to 32.8 T by the effective mass and dielectric constant. The spectra reproduce the high-field theory for free hydrogen, with quadratic Zeeman splitting and strong mixing of spherical harmonics. They show the way for experiments on He and H2 analogues, and for investigation of He2, a bound molecule predicted under extreme field conditions.

Date: 2013
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DOI: 10.1038/ncomms2466

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