Results 111 to 120 of about 1,855,980 (368)

Tunnelling Methods and Hawking's radiation: achievements and prospects

, 2011
The aim of this work is to review the tunnelling method as an alternative description of the quantum radiation from black holes and cosmological horizons.
't Hooft G, Acquaviva G Di Criscienzo R Vanzo L Zerbini S, Akbar M, Angheben M, Angheben M, Arzano M, Ashtekar A, Ashtekar A, Ashtekar A, Astefanesei D, Banerjee R, Banerjee R, Banerjee R, Belinski V A, Birrell N D, Bros J, Cai R G, Cai R G, Caldarelli M Vanzo L Zerbini S, Chen D Y Jiang Q Q Zu X T, Chen Y X Shao K N, Clifton T, Deser S, Deser S, Di Criscienzo R, Di Criscienzo R, Di Criscienzo R, Flambaum V V, Frolov V P, G Acquaviva, Gillani U A Rehman M Saifullah K, Gillani U A Saifullah K, Griffiths J B, Grumiller D, Gullstrand A, Hayward S A, Hayward S A, Hayward S A, Hayward S A Di Criscienzo R Nadalini M Vanzo L Zerbini S, Hayward S A Di Criscienzo R Nadalini M Vanzo L Zerbini S, He T M, Iguchi H, Jacobson T, Jacobson T, Jian T, Jiang K X, Kerner R, Kiefer C, Kim S P, Kraus P, L Vanzo, Landau L D, Li H L, Li H L, Li H L, Li H L, Li H L, Li R, Lin K, Lin K, Lindesay J, Lindesay J, Ma Z Z, Mann R B, Matsuno K Umetsu K, McVittie G C, Medved A J M, Miyamoto U Nemoto H Shimano M, Moretti V Pinamonti N, Mukohyama S, Nadalini M, Nakamura T K, Nariai H, Nielsen A, Nielsen A B, Nielsen A B, Nojiri S, Nolan B C, Nolan B C, Nozari K, Nozari K, Page D N, Painlevé P, Parikh M K, Parikh M K, Pizzi M, Podolsky J, R Di Criscienzo, Rabinowitz M, Rehman M, Sarkar S, Sekiwa Y, Shankaranarayanan S, Stotyn S, Szabados L B, Tolman R C, Traschen J H, Vaidya P C, Vanzo L, Vanzo L, Volovik G E, Wald R M, Wang Q, Wu S F, Wu S Q Jiang Q Q, Yale A, Yang J, Yang S Z, Zhang J Y, Zhang J Zhao Z, Zhao L, Zhu T, Åminneborg S   +112 more
core   +1 more source

Two‐Dimensional Materials as a Multiproperty Sensing Platform

Advanced Functional Materials, EarlyView.
Various sensing modalities enabled and/or enhanced by two‐dimensional (2D) materials are reviewed. The domains considered for sensing include: 1) optoelectronics, 2) quantum defects, 3) scanning probe microscopy, 4) nanomechanics, and 5) bio‐ and chemosensing.
Dipankar Jana, Shubhrasish Mukherjee, Dmitrii Litvinov, Magdalena Grzeszczyk, Sergey Grebenchuk, Makars Šiškins, Virgil Gavriliuc, Yihang Ouyang, Changyi Chen, Yuxuan Ye, Meng Yiming, Maciej Koperski   +11 more
wiley   +1 more source

Effects of a nonlinear perturbation on dynamical tunneling in cold atoms

, 2003
We perform a numerical analysis of the effects of a nonlinear perturbation on the quantum dynamics of two models describing non-interacting cold atoms in a standing wave of light with a periodical modulated amplitude $A(t)$.
A. D. Bandrauk, A. Iomin, A. Mouchet, A. Mouchet, B. V. Chirikov, C. Dembowski, D. A. Steck, D. A. Steck, D. L. Shepelyansky, D. Shepelyansky, F. Benvenuto, F. Borgonovi, F. Dalfovo, F. M. Izrailev, F. M. Izrailev, G. Casati, G. P. Berman, Laura Rebuzzini, M. J. Davis, M. Latka, M. Wilkinson, M. Wilkinson, R. Artuso, R. Balian, R. Luter, Roberto Artuso, S. A. Gardiner, S. Benkadda, S. Fishman, S. J. Chang, S. Tomsovic, W. K. Hensinger   +31 more
core   +1 more source

Emergent Magnetic Structures at the 2D Limit of the Altermagnet MnTe

Advanced Functional Materials, EarlyView.
Renewed interest in MnTe has emerged due to its intriguing altermagnetism, a newly identified form of magnetism distinct from conventional ferro‐, antiferro‐, or paramagnetism. By combining magnetic X‐ray absorption spectroscopy, scanning tunnelling microscopy, and first‐principles theory, this study reveals that thinning MnTe to the 2D limit ...
Marc G. Cuxart, Roberto Robles, Beatriz Muñiz Cano, Pierluigi Gargiani, Clara Rebanal, Iolanda Di Bernardo, Alireza Amiri, Fabián Calleja, Manuela Garnica, Miguel A. Valbuena, Amadeo L. Vázquez de Parga   +10 more
wiley   +1 more source

Unprecedented Spin‐Lifetime of Itinerant Electrons in Natural Graphite Crystals

Advanced Functional Materials, EarlyView.
Graphite exhibits extraordinary spintronic potential, with electron spin lifetimes reaching 1,000 ns at room temperature ‐ over 100 times longer than graphene‐based devices. Magnetic resonance spectroscopy reveals strong anisotropy: out‐of‐plane spins live 50 times longer than their in‐plane counterparts.
Bence G. Márkus, Dávid Beke, Lili Vajtai, András Jánossy, László Forró, Ferenc Simon   +5 more
wiley   +1 more source

Probing Local Emission Properties in InGaN/GaN Quantum Wells by Scanning Tunneling Luminescence Microscopy [PDF]

, 2022
Mylène Sauty, Natalia Alyabyeva, Cheyenne Lynsky, Yi Chao Chow, Shuji Nakamura, James S. Speck, Y. Lassailly, A. C. H. Rowe, Claude Weisbuch, Jacques Peretti   +9 more
openalex   +1 more source

Magnetic and Structural Response Tuned by Coexisting Mn Concentration‐Dependent Phases in MnBi2Te4 Thin Film Grown on GaAs(001) by Molecular Beam Epitaxy

Advanced Functional Materials, EarlyView.
The study explores structural and magnetic properties of one of the most recent topological quantum materials (MnBi2Te4). The Mn‐poor structure leads to stacking faults (quintuple layer ‐ QL of Bi2Te3 formation instead of a septuple layer ‐ SL of MnBi2Te4), resulting in a coexistence between weak antiferromagnetism and ferromagnetism.
Wesley F. Inoch, Sergio L. A. Mello, Gilberto Rodrigues‐Junior, Sukarno O. Ferreira, Marcelo M. Sant'Anna, Benjamin R. Salles, Mateus T. Souza, Sérgio L. Morelhão, Maybi F. Sampaio, Bráulio S. Archanjo, Leonarde N. Rodrigues   +10 more
wiley   +1 more source

Reducing Open‐Circuit Voltage Losses in Wide‐Bandgap FAPbBr3 Perovskite Solar Cells for Continuous Unassisted Light‐Driven Water Splitting

Advanced Functional Materials, EarlyView.
The combination of formamidinium thiocyanate and 1,3‐propane diammonium iodide for bulk and top‐surface passivation, and a ternary fullerene blend to improve energy band alignment, suppresses energy losses in wide‐bandgap FAPbBr3 perovskite solar cells.
Laura Bellini, Daniël Grosfeld, Bruno Branco, Guus J. W. Aalbers, Lana M. Kessels, Willemijn H. M. Remmerswaal, Nicolas Daub, Kunal Datta, Martijn M. Wienk, René A. J. Janssen   +9 more
wiley   +1 more source

Electron temperature in electrically isolated Si double quantum dots

, 2012
Charge-based quantum computation can be attained through reliable control of single electrons in lead-less quantum systems. Single-charge transitions in electrically-isolated double quantum dots (DQD) realised in phosphorus-doped silicon can be detected ...
Ferrus, T., Rossi, A., Williams, D. A.
core   +1 more source

QUANTUM TUNNELING SENSORS

, 2007
Realisation of the first working sensor based on quantum tunneling between arrays of nanowires[1,2,3] is presented. The sensing element consists of 12,000 nanowires, each 90 nm wide and 5 mm long (~1:55,000 aspect ratio), on an area of 5 x 4.3 mm. The sensing element was fabricated using phase shift mask lithography and dry etch processes followed by ...
Marek, Michalewicz, Glowacki, P., Singh, N., Balakumar, S., Gosvami, N.N.   +4 more
openaire   +1 more source