B S Dennis
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Explore the profile of B S Dennis including associated specialties, affiliations and a list of published articles.
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14
Citations
16
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Recent Articles
1.
Wurstbauer U, Majumder D, Mandal S, Dujovne I, Rhone T, Dennis B, et al.
Phys Rev Lett
. 2011 Sep;
107(6):066804.
PMID: 21902358
We find unexpected low energy excitations of fully spin-polarized composite-fermion ferromagnets in the fractional quantum Hall liquid, resulting from a complex interplay between a topological order manifesting through new energy...
2.
Blumberg G, Mialitsin A, Dennis B, Klein M, Zhigadlo N, Karpinski J
Phys Rev Lett
. 2008 Feb;
99(22):227002.
PMID: 18233316
We report observation of Leggett's collective mode in a multiband MgB2 superconductor with Tc=39 K arising from the fluctuations in the relative phase between two superconducting condensates. The novel mode...
3.
Groshaus J, Plochocka-Polack P, RAPPAPORT M, Umansky V, Bar-Joseph I, Dennis B, et al.
Phys Rev Lett
. 2007 May;
98(15):156803.
PMID: 17501371
We present measurements of optical interband absorption in the fractional quantum Hall regime in a GaAs quantum well in the range 0<nu<or=1. We investigate the mechanism of singlet trion absorption,...
4.
Gallais Y, Kirschenmann T, Dujovne I, Hirjibehedin C, Pinczuk A, Dennis B, et al.
Phys Rev Lett
. 2006 Aug;
97(3):036804.
PMID: 16907529
Spin excitations from a partially populated composite fermion level are studied above and below nu=1/3. In the range 2/7<nu<2/5, the experiments uncover significant departures from the noninteracting composite fermion picture...
5.
Hirjibehedin C, Dujovne I, Pinczuk A, Dennis B, Pfeiffer L, West K
Phys Rev Lett
. 2005 Aug;
95(6):066803.
PMID: 16090973
Resonant inelastic light scattering experiments at nu = 1/3 reveal a novel splitting of the long-wavelength modes in the low energy spectrum of quasi-particle excitations in the charge degree of...
6.
Dujovne I, Pinczuk A, Kang M, Dennis B, Pfeiffer L, West K
Phys Rev Lett
. 2005 Aug;
95(5):056808.
PMID: 16090907
Measurements of low-lying spin excitations by inelastic light scattering unveil a delicate balance between spin reversal and Fermi energies in the Fermi sea of composite fermions that emerges in the...
7.
Gozar A, Dennis B, Blumberg G, Komiya S, Ando Y
Phys Rev Lett
. 2004 Aug;
93(2):027001.
PMID: 15323941
We study long wavelength magnetic excitations in lightly doped La2-xSrxCuO4 (x</=0.03) detwinned crystals. The lowest energy magnetic anisotropy induced gap can be understood in terms of the antisymmetric spin interaction...
8.
Hirjibehedin C, Pinczuk A, Dennis B, Pfeiffer L, West K
Phys Rev Lett
. 2003 Nov;
91(18):186802.
PMID: 14611304
New low-lying excitations are observed by inelastic light scattering at filling factors nu=p/(phip+/-1) of the fractional quantum Hall regime with phi=4. Coexisting with these modes throughout the range nu <...
9.
Gozar A, Blumberg G, Littlewood P, Dennis B, Motoyama N, Eisaki H, et al.
Phys Rev Lett
. 2003 Oct;
91(8):087401.
PMID: 14525276
Raman measurements in the 1.5-20 cm(-1) energy range were performed on single crystals of Sr14-xCaxCu24O41. A quasielastic scattering peak (QEP) which softens with cooling is observed only in the polarization...
10.
Dujovne I, Pinczuk A, Kang M, Dennis B, Pfeiffer L, West K
Phys Rev Lett
. 2003 Feb;
90(3):036803.
PMID: 12570516
Excitation modes in the range 2/5>or=nu>or=1/3 of the fractional quantum Hall regime are observed by resonant inelastic light scattering. Spectra of spin-reversed excitations suggest a structure of lowest spin-split Landau...