Leiden University, The Netherlands
14 June - 2 July 1999
Coordinators:
D. Khomskii (Groningen)
J.A. Mydosh (Leiden)
J. Zaanen (Leiden)
This three-week workshop will
focus upon three modern topics of particular
current interest in the rapidly
developing field of "quantum magnetism".
The latter terms we use collectively
to represent a newly emerging subfield
of condensed matter physics
where new magnetic materials play a major role.
Here a variety of novel phenomena
occur, such as quantum phase transition,
spin liquids, phase separations,
etc., and generate complex organizations
in strongly interacting quantum
matter.
Our three topics of attention are:
i) Stripe phases of low-dimensional
oxide materials where there occur phase
separations in real space of
charge and spin into ordered regions. The
associated phase transitions
modify the magnetic, electronic and
superconducting properties such
that a unique quantum ground state is
formed.
ii Strongly interacting magnetic
materials possessing unusual behaviors
related to colossal magneto-resistance,
metal/insulator transitions and
orbital ordering. Attention
will concentrate on the understanding and
control of the magnetic interactions
and how these influence the electronic
and structural properties.
iii Nanomagnetism includes the
artificial structuring of magnetic materials
on a sub micron level and natural
occurring magnetic entities such as
molecules and clusters. Here
the emphasis will be on the macroscopic
behaviors found in single domains
of quantum spins, quantum coherence,
dissipation and tunneling of
magnetization, and disorder and frustration
effects.
List of participants/lecturers:
G. Aeppli (NEC-Princeton)
A. Balatsky (Los Alamos)
B. Barbara (Grenoble)
B. Buechner (Cologne)
C. Castellani (Roma)
C. Di Castro (Roma)
A. Castro-Neto (Riverside)
K. Kikoin (Beer-Sheva)
T. Kimura (Tsukuba)
P. Kopietz (Goettingen)
D. Loss (Basel)
A. Millis (John Hopkins)
T. Mizokawa (Tokyo)
H. Mook
A. Moreo (Florida)
N. Nagaosa (Tokyo)
S. Sachdev (Yale)
P. Stamp (Vancouver)
J. Tranquada (Brookhaven)
S. Uchida (Tokyo)
K. Ueda (Tokyo)
It is hoped through a minimum
of formal seminars and lectures and a maximum
of small informal discussions
and interactions that significant advance
will be made in the above areas.
Although no proceedings of the workshop
will appear it is expected that
participants will use the stimulations and
exchanges at the Lorentz Center
as a source for future publications and
contributions to the field.
Preliminary Program
Please note that other participants
will have ample time to
present results in talks,
to be scheduled during the workshop.
Monday June 14
11.00 Organizational Meeting
14.00 Kimura (manganites)
17.00 Cheese and wine party
Tuesday June 15
9.30 Nagaosa (manganites)
11.00 Mydosh
Wednesday June 16
9.30 Castro-Neto
14.00 Nieuwenhuizen
Thursday June 17
9.30 Di Castro
11.00 Kikoin
13.30-16.00 Stripe discussion
(Nagaosa, Di Castro, Brom)
16.00 Lecture hall 032 (ground
floor): Jorrit Jorritsma
Magnetic and electrical transport
properties of metallic nanowires
Organized dinner
Friday June 18
9.30 Loss: Spin Tunneling in
Nanomagnets
11.00 Stamp: Coherence and Decoherence
in the Quantum Dynamics of Nanomagnets
13.30 Nanomagnetism discussion
Monday June 21
9.30 Imai
11.00 Wernsdorfer
17.00 Cheese and wine party
Tuesday June 22
9.30 Sachdev
11.00 Barbara
14.00 Discussion: Quantum magnetism
and nanomagnetism
14.00 Theoretical seminar Instituut-Lorentz
(room 276 Oort building):
T.C. Choy (National Center for
Theoretical Sciences, Taiwan):
The meaning of "counterfactual"
statements and non-locality in quantum mechanics
Wednesday June 23
9.30 Tranquada
11.00 Morais Smith/Mostovoy
14.00 Discussion: Stripes
Thursday June 24
Excursion to the Delta Project
(Zeeland)
Organised dinner
Friday June 25
9.30 Mook
11.00 Varma (not certain)
Monday June 28
9.30 Uchida
11.00 Moreo
17.00 Cheese and wine party
Tuesday June 29
9.30 Aeppli
11.00 Zachar
Wednesday June 30
9.30 Palstra
11.00 Ueda
14.00 Werner
Thursday July 1
9.30 Mizokawa
11.00 Van der Marel
Organised dinner
Friday July 2
9.30 Eder
11.00 Kopietz
For further information, please
contact:
Annette Vermond, Management and Program Assistant.
Lorentz Center, Niels Bohrweg 2, 2333 CA Leiden, the Netherlands.
Tel: +31 71 5275400, Fax: +31
71 5275415, email: mailto:vermond@lorentzcenter.nl