Results 61 to 70 of about 39,774 (284)

Macroscopic quantum tunnelling of a Bose-Einstein condensate in a Cubic-Plus-Quadratic Well

AAPPS Bulletin
We study the macroscopic quantum tunnelling of an interacting Bose-Einstein condensate in a cubic-plus-quadratic well that was approximately realized in recent experiment.
Rui-Bin Liu, Mingyang Liu, Shizhong Zhang   +2 more
doaj   +1 more source

Quantum tunnelling of magnetization in Mn12-ac studied by 55Mn NMR

, 2002
We present an ultra-low temperature study (down to T = 20 mK) of the nuclear spin-lattice relaxation (SLR) in the 55Mn nuclei of the molecular magnet Mn12-ac.
A. Morello, Bokacheva, Chiorescu, Chudnovsky, Friedman, Furukawa, H.B. Brom, Kubo, L.J. de Jongh, Lascialfari, Leuenberger, O.N. Bakharev, Prokof'ev, Suter, Takeda, Thomas, Ueda, Wernsdordfer   +17 more
core   +1 more source

A mechanical model of tunnelling [PDF]

, 2008
It is shown how the model which was introduced by Mouchet (2008 Eur. J. Phys.
Mouchet, Amaury
core   +4 more sources

Quantum tunneling and back reaction [PDF]

Physics Letters B, 2008
LaTex, 6 pages, no figures, minor changes, references added, to appear in Phys.
Banerjee, Rabin, Majhi, Bibhas Ranjan
openaire   +3 more sources

In‐Situ Solution Complexation for n‐Type Surface‐Energetics Reconstruction in 2.0 eV Ultra‐Wide‐Bandgap Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
A reactive in situ solution complexation strategy reconstructs the surface of 2.0 eV ultra‐wide‐bandgap perovskites via proton transfer. This chemical modulation eliminates metallic defects and induces a degenerate‐like n‐type surface, establishing an Ohmic tunneling contact.
Saemon Yoon, Han‐Gyun Lim, Jinyoung Kim, Gyu Min Kim, Seojun Lee, Jun Ryu, SungWon Cho, Jincheol Kim, Hyosung Choi, Jung Sang Cho, Jongsung Park, Dong‐Won Kang   +11 more
wiley   +1 more source

Conformation-driven quantum interference effects mediated by through-space conjugation in self-assembled monolayers

Nature Communications, 2016
Tunnelling currents through molecular junctions are affected by quantum interference effects, but understanding the factors leading to them remains a challenge.
Marco Carlotti, Andrii Kovalchuk, Tobias Wächter, Xinkai Qiu, Michael Zharnikov, Ryan C. Chiechi   +5 more
doaj   +1 more source

Phase Coherence in a Driven Double-Well System

, 2004
We analyze the dynamics of the molecular field incoherently pumped by the photoassociation of fermionic atoms and coupled by quantum tunnelling in a double-well potential.
A. L. Fetter, C. P. Search, C. P. Search, M. O. Scully, P. Meystre, P. Noziéres, T. Miyakawa   +6 more
core   +1 more source

Suppression of Quantum Phase Interference in Molecular Magnets Fe₈ with Dipolar-Dipolar Interaction [PDF]

, 2002
Renormalized tunnel splitting with a finite distribution in the biaxial spin model for molecular magnets is obtained by taking into account the dipolar interaction of enviromental spins.
A. Cuccoli, A. Garg, B. Barbara, D.A. Garanin, E. Rastelli, E.M. Chudnovsky, J. Liu, J.-Q. Liang, J.Q. Liang, M. Ueda, M.N. Leuenberger, N.V. Prokof’ev, N.V. Prokof’ev, N.V. Prokof’ev, N.V. Prokof’ev, R.G. Palmer, S. Miyashita, Shun-Qing Shen, T. Ohm, T. Ohm, W. Wernsdorfer, W. Wernsdorfer, W. Wernsdorfer, Y.H. Jin, Z.D. Chen, Zhi-De Chen   +25 more
core   +2 more sources

Omnipolar Magnetic Field Detection by Superlattice‐Based Hall Sensor

Advanced Functional Materials, EarlyView.
Magnetic‐field‐induced electronic switching is demonstrated in unit‐cell‐engineered La0.7Sr0.3MnO3–BiFeO3 superlattices. Distinct substrate terminations modify magnetic and transport properties. Hall resistance measurements show omnipolar, hysteretic anomalous Hall switching above the Curie temperature, arising from Fe─Mn interfacial exchange, enabling
Mark Huijben, Nicolas Gauquelin, Arno Annys, Zhaoliang Liao, Jo Verbeeck, Guus Rijnders, Gertjan Koster   +6 more
wiley   +1 more source

Experimental observation of quantum mechanical fluorine tunnelling

Nature Communications
Quantum mechanical tunnelling occurs when a molecule transforms between two states separated by a finite energy barrier that cannot be overcome thermally. To date, it has been observed for elements up to oxygen.
Carsten Müller, Frederik Bader, Frenio A. Redeker, Lawrence Conrad, Helmut Beckers, Beate Paulus, Sebastian Riedel, Jean Christophe Tremblay   +7 more
doaj   +1 more source