H
Hans P. Jenssen
Researcher at Massachusetts Institute of Technology
Publications - 68
Citations - 2297
Hans P. Jenssen is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Barium titanate & Photorefractive effect. The author has an hindex of 23, co-authored 68 publications receiving 2244 citations.
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Journal ArticleDOI
Antisymmetric exchange and its influence on the magnetic structure and conductivity of La 2 Cu O 4
Tineke Thio,T. R. Thurston,N. W. Preyer,P. J. Picone,Marc Kastner,Hans P. Jenssen,D. R. Gabbe,Changchen Chen,Robert J. Birgeneau,Amnon Aharony +9 more
TL;DR: Enhancement of the conductivity in the ferromagnetic phase demonstrates a strong connection between the magnetism and charge transport.
Journal ArticleDOI
Static and dynamic spin correlations in pure and doped La 2 CuO 4
Yasuo Endoh,Kohta Yamada,Robert J. Birgeneau,D. R. Gabbe,Hans P. Jenssen,Marc Kastner,C. J. Peters,P. J. Picone,T. R. Thurston,John M. Tranquada,Gen Shirane,Yoshikazu Hidaka,Migaku Oda,Youichi Enomoto,Motofumi Suzuki,Toshiaki Murakami +15 more
TL;DR: This large energy scale for the spin fluctuations gives credence to models of the superconductivity in doped La/sub 2/CuO/sub 4/ in which the pairing is magnetic in origin.
Journal ArticleDOI
Antiferromangetic spin correlations in insulating, metallic, and superconducting La2-xSrx
Robert J. Birgeneau,D. R. Gabbe,Hans P. Jenssen,Marc Kastner,P. J. Picone,T. R. Thurston,Gen Shirane,Y. Endoh,M. Sato,K. Yamada,Yoshikazu Hidaka,Migaku Oda,Youichi Enomoto,Motofumi Suzuki,Toshiaki Murakami +14 more
TL;DR: It is shown that the Neel state is destroyed by the doping and spin-spin correlation lenght xi is quite short, varying from approx.35 to approx.8 A as x varies between 0.02 and 0.18; the local order is the same as in pure La/sub 2/CuO/sub 4/.
Journal ArticleDOI
Lattice instability and soft phonons in single-crystal La2-xSrxCuO4.
Peter Böni,J. D. Axe,Gen Shirane,Robert J. Birgeneau,D. R. Gabbe,Hans P. Jenssen,Marc Kastner,C. J. Peters,P. J. Picone,T. R. Thurston +9 more
TL;DR: The tetragonal-to-orthorhombic phase transition is caused by a softening of a transverse-optic-phonon mode at the $X$ point and the rotational nature of the soft mode leads to moderate electron- phonon coupling and the mode is unlikely to enhance significantly conventional phonon mediated superconductivity.
Journal ArticleDOI
Resistivity of nonmetallic La2-ySryCu1-xLixO4- delta single crystals and ceramics.
Marc Kastner,Robert J. Birgeneau,Changchen Chen,Yet-Ming Chiang,D. R. Gabbe,Hans P. Jenssen,T. Junk,C. J. Peters,P. J. Picone,Tineke Thio,T. R. Thurston,Harry L. Tuller +11 more
TL;DR: The resistivity of nonmetallic La/sub 2-sub y/Sr/sub y,Cu/sub 1-//sub x/Li/sub X/O/sub 4-sub delta/ single crystals and ceramics accurately follows the functional form exp((T/sub 0/T)/sup 1/4/), characteristic of variable-range hopping as mentioned in this paper.