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A few thoughts: – PowerPoint PPT presentation

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Title: A few thoughts:


1
Summary Remarks at the conclusion of the Sixth
International Conference on Physical Phenomena in
High Magnetic Fields
A few thoughts The level of activity, the
research excitement and the potential
applications that could result are all at an
historic highpoint for research in high magnetic
fields. In condensed matter physics, you can
pick your favorite Hamiltonian to study
and magnetic fields offer a particularly flexible
way to manipulate that Hamiltonian. Over the
past decade of PPHMF conferences, spin
physics emerged to dominate charge physics.
Greg Boebinger August 5, 2008 Tallinn, Estonia
2
Materials Research Saving Lives for more than
2000 Years
Greg Boebinger August 5, 2008 Tallinn, Estonia
3
Materials Research Making the Impossible
Possible
Greg Boebinger August 5, 2008 Tallinn, Estonia
Natures apparent constraints on accessing
fundamentally important phenomena are often
relaxed by the billions of materials available to
work with all we have to do is study billions
of different materials.
4
Electron Magnetic Resonance Technological
Revolutions in the Making
Greg Boebinger August 5, 2008 Tallinn, Estonia
Magnetic fields and.GHz and THz Electron
Magnetic Resonance time-domain studies using
electron spins and techniques borrowed from
(and improved over) NMR
Harvesting Solar Energy (understanding energy
transfer on the nanoscale)
Resolving Biofunctional Isomers (Sugar coating
helps antibodies to recognize antigens. The
glucose molecule (left or right) and galactose
molecule (right or left, respectively) are
functionally distinct, differing only by whether
an H or an OH sticks up from the plane.

Understanding Catalysis at the Molecular
Level (Where is the unpaired electron located?
the key to nucleating chemical reactions by this
palladium paddle-wheel catalyst)
Molecular Magnets (Atomic nitrogen in a C60 cage
is one of many robust qubits already demonstrated)
5
Addressing the Terahertz Blindspot Scientific
Revolutions in the Making
Greg Boebinger August 5, 2008 Tallinn, Estonia
Complete Vibrational Spectra of Macromolecules
(from slow backbone bending to fast individual
bond vibrations)
Actinide Chemistry (bond-specific multi-photon
infra-red dissociation because a single visible
(or UV) photon is too disruptive)
Vibrational Mode Coupling (two-dimensional
pump-probe infra-red spectroscopy to watch
molecules wiggleonly vicariously, alas)
Imaging the warm bits
6
Materials Research using Magnetic Fields
Oxides Its not just about RUST any more
Greg Boebinger August 5, 2008 Tallinn, Estonia
Oxides Infinite Chemical Flexibility Oxide
Interfaces Manipulating Charge
Transfer (difficult in organics) Unexpected
Interface Phases (superconductivity between
non-superconductors) (magnetism between two
non-magnetic materials
and log-T resistivity (a personal favorite !)
7
Materials Research using Magnetic Fields Spin
Control
Greg Boebinger August 5, 2008 Tallinn, Estonia
Designer Spin Systems Including, increasingly,
the Oxides (Anything)x (Magnetic Ion)y
(Oxygen)z and Organics (Big/Small
Floppy/Rigid Cations/Anions) 1/2 lt S lt 12 1 lt
size of unit cell lt 10 bond lengths frustrated
yes/no single-ion anisotropy yes/no Bands p,
d, f 1 lt dimension lt 4 (see next slide)
8
Materials Research in 4D the phases, they are
a changin
Greg Boebinger August 5, 2008 Tallinn, Estonia
Organic Nernst Effect
Rare-Earth-Enhanced Nernst Effect
9
Greg Boebinger August 5, 2008 Tallinn, Estonia
Spin Control, Part Deux
Perfectly-tuned exchange constants offer
increasingly complex behaviors
Molecular magnets can offer hope for
zero-impurity samples because nature wont
build the molecule any other way
Functional magnetic thin films are going Pc
10
Very Odd Magnetic Effects Spin Control one
atom at a time
Greg Boebinger August 5, 2008 Tallinn, Estonia
10
Spectra toggle back and forth (fat dip / skinny
dip / fat dip / skinny dip) with each additional
Manganese atom.
11
Superconductivity (There is nothing funny
about superconductivity)
Greg Boebinger August 5, 2008 Tallinn, Estonia
Reentrant Superconductivity in High Magnetic
Fields two long-standing enemies find a way to
just get along.
12
Taking the Magnetic Fields to the Mountain
Now Magnets are On The Road
Greg Boebinger August 5, 2008 Tallinn, Estonia
Bring Your Own Magnets the Newly-Invented
Peripatetic (Magnet) Lab (NIPL)
Taking the Magnetic Fields to the World On
The Road Again (thanks for coming and travel
safely)
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