Leonid V. Butov Professor University of California San Diego  Department of Physics Mayer Hall 4426 9500 Gilman Drive La Jolla, CA 92093-0319 Email: lvbutov@physics.ucsd.edu Tel: (858) 822-0362 Fax: (858) 534-2232 List of publications

Selected publications (recent):
L.V. Butov, L.S. Levitov, A.V. Mintsev, B.D. Simons, A.C. Gossard, and D.S. Chemla, Charge transport and phase transition in exciton rings, cond-mat/0308117

L.V. Butov, Exciton condensation in coupled quantum wells, Special Issue of Solid State Communications, 127, 89 (2003).                (PDF 762 KB)

A.V. Mintsev, L.V. Butov, C. Ell, S. Mosor, G. Khitrova, and H.M. Gibbs, Polariton dispersion of periodic quantum well structures, Pis'ma Zh. Eksp. Teor. Fiz. 76, No. 10, 742 (2002) [JETP Letters 76, No. 10, 637 (2002)]           (PDF 145 KB)

L.V. Butov, A.C. Gossard, and D.S. Chemla, Macroscopically ordered state in an exciton system, cond-mat/0204482, Nature 418, 751 (2002)     (PDF 268 KB)

L.V. Butov, A.L. Ivanov, A. Imamoglu, P.B. Littlewood, A.A. Shashkin, V.T. Dolgopolov, K.L. Campman, and A.C. Gossard, Stimulated scattering of indirect excitons in coupled quantum wells: Signature of a degenerate Bose-gas of excitons, Phys. Rev. Lett. 86, 5608 (2001)           (PDF 155 KB)

L.V. Butov and A.I. Filin, Anomalous transport and luminescence of indirect excitons in AlAs/GaAs coupled quantum wells as evidence for exciton condensation, Phys. Rev. B 58, 1980 (1998)          (PDF 392 KB)

Experimental lab:
Unique experimental lab for optical spectroscopy and transport experiments at ultralow temperatures and high magnetic fields would include the following experimental techniques:
- Spectroscopy at temperatures from 10 mK to 300 K
- Spectroscopy in high magnetic fields (up to 16 T)
- Coherent optical spectroscopy
- Imaging spectroscopy (with micrometer spatial resolution)
- Ultrafast spectroscopy (with ps time resolution)
- Spectroscopy of gated semiconductor microdevices combined with transport and capacitance techniques