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"Superconductivity of metallic boron
in MgB2," by J. Kortus, I.I.
Mazin, K.D. Belaschenko, V.P. Antropov,
L.L. Boyer, Physical Review Letters, 86(20): 4656-9, 14 May 2001.
[Georgetown University, Washington, D.C.;
Naval Research Laboratory, Washington, D.C.;
Ames Laboratory, IA]
Abstract: "Boron in MgB2 forms
stacks of honeycomb layers with magnesium as a space filler. Band structure
calculations indicate that Mg is substantially ionized, and the bands at the
Fermi level derive mainly from B orbitals.
Strong bonding with an ionic component and considerable metallic density of
states yield a sizable electron-phonon
coupling. Together with high phonon frequencies, which we estimate via
zone-center frozen phonon calculations to
be between 300 and 700 cm(to the negative 1), this produces a high critical
temperature, consistent with recent
experiments. Thus MgB2 can be viewed as an analog of the long sought, but
still hypothetical, superconducting metallic hydrogen."
This 2001 report from Physical Review
Letters was cited 40 times in current journal articles
indexed by
Thomson ISI during January-February 2003. With its latest bimonthly total, the
report now ranks at #4
among non-review physics papers published in the last two years (the paper, in
fact has lingered in the Top
Ten for more than a year now). Prior to the most recent bimonthly count,
citations to the paper have
accrued as follows:
November-December 2002: 33 citations
September-October 2002: 32
July-August 2002: 14
May-June 2002: 26
March-April 2002: 22
January-February 2002: 21
November-December 2001: 25
September-October 2001: 20
July-August 2001: 22
Total citations to date: 255
SOURCE: Hot
Papers Database (Included with a subscription to the ISI print newsletter Science
Watch®, available from the ISI
Research Services Group. Packaged on a CD-ROM that is mailed with each Science
Watch issue, the Hot
Papers Database contains data on hundreds of highly cited papers published
during the last two years. User interface permits searching by author,
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accrued during successive bimonthly periods, can be assessed and graphed. An
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