Results 81 to 90 of about 58,719 (283)

Scanning microscopies of superconductors at very low temperatures

, 2012
We discuss basics of scanning tunneling microscopy and spectroscopy (STM/S) of the superconducting state with normal and superconducting tips. We present a new method to measure the local variations in the Andreev reflection amplitude between a ...
A. Maldonado, Abrikosov, Andreev, Aynajian, Balatsky, Banerjee, Bergeal, Bergeal, Blatter, Blonder, Brandt, Brandt, Buzdin, Crespo, Crespo, Eskildsen, Eskildsen, Fischer, Giamarchi, Guillamon, Guillamon, Guillamón, Guillamón, H. Suderow, Hanaguri, Hayashi, Hess, Hess, I. Guillamon, J.A. Galvis, J.G. Rodrigo, Kirtley, Maldonado, Maldonado, Naaman, Nishimori, Noat, Octavio, P. Kulkarni, P. Rodiere, Pan, Rodrigo, Rodrigo, Rodrigo, Rodrigo, Rodrigo, S. Banerjee, S. Vieira, Sakata, Schmidt, Silhanek, Song, Suderow, Suderow, Suderow, Ternes, V. Crespo   +56 more
core   +3 more sources

Investigation of Halogen Substitution Effects in π‐Conjugated Organic Ligands of Chiral Hybrid Perovskites on Their Chiroptical Activity

Advanced Functional Materials, EarlyView.
The role of novel thiophene‐based ligands with halogen substitutions in enhancing the chiroptical and optoelectronic properties of 2D chiral HOIPs has been investigated. By tailoring ligand design, enhanced CD and CPL properties are achieved, with improved CPL discrimination in photodetectors.
Boesung Kwon, Doyeong Yeo, In‐Chul Hwang, In Hwan Jung, Joon Hak Oh   +4 more
wiley   +1 more source

Combined scanning force microscopy and scanning tunneling spectroscopy of an electronic nano-circuit at very low temperature

, 2007
We demonstrate the combination of scanning force microscopy and scanning tunneling spectroscopy in a local probe microscope operating at very low temperature (60 mK). This local probe uses a quartz tuning fork ensuring high tunnel junction stability.
Courtois, Hervé, Luo, Pengshun S., Senzier, Julien   +2 more
core   +3 more sources

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

Advanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand, Nuno Estrócio, Ji S. Kim, Babak Bakhit, Marian C. Istrate, Corneliu Ghica, Tiago Rebelo, Nives Strkalj, Abin Varghese, Bernardo Almeida, Luís S. Marques, Bipin Rajendran, Judith L. MacManus‐Driscoll, José P. B. Silva   +13 more
wiley   +1 more source

Spectroscopy of a tunable moiré system with a correlated and topological flat band

Nature Communications, 2021
Twisted double bilayer graphene hosts flat bands that can be tuned with an electric field. Here, by using gate-tuned scanning tunneling spectroscopy, the authors demonstrate the tunability of the flat band and reveal spectral signatures of correlated ...
Xiaomeng Liu, Cheng-Li Chiu, Jong Yeon Lee, Gelareh Farahi, Kenji Watanabe, Takashi Taniguchi, Ashvin Vishwanath, Ali Yazdani   +7 more
doaj   +1 more source

Furan‐Substituted Phosphine‐Oxide as an Efficient Interfacial Modifier for Wide‐Bandgap Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
We report phosphine‐oxide interlayers for wide‐bandgap perovskite solar cells, in which tuned P = O Lewis basicity enables selective passivation of buried NiOx/perovskite interfaces and introduces interfacial dipoles that strengthen the built‐in field.
JeeHee Hong, Juan Anthony Prayogo, Soobin Heo, Jae Sung Yun, Dong Ryeol Whang, Dong Wook Chang, Hui Joon Park   +6 more
wiley   +1 more source

Raman and scanning tunneling spectroscopic investigations on graphene-silver nanocomposites

Journal of Science: Advanced Materials and Devices, 2018
Graphene-silver (G-Ag) nanocomposites were prepared using liquid phase exfoliation of graphite flakes followed by a reduction of silver nitrate. The plasmonic characteristics of these nanocomposites are highly sensitive to the Ag concentration in the ...
Sheena S. Sukumaran, C.R. Rekha, A.N. Resmi, K.B. Jinesh, K.G. Gopchandran   +4 more
doaj   +1 more source

Symmetric Versus Nonsymmetric Structure of the Phosphorus Vacancy on InP(110)

, 2000
The atomic and electronic structure of positively charged P vacancies on InP(110) surfaces is determined by combining scanning tunneling microscopy, photoelectron spectroscopy, and density-functional theory calculations.
B. Engels, C. H. Chen, G. Lengel, G. Schwarz, G. Schwarz, H. Kim, H. Kim, H. Kim, H. Nienhaus, J. Da̧browski, J. Harper, J. Harper, J. Neugebauer, K. Horn, K. Urban, L. Aballe, M. Bockstedte, M. Scheffler, Ph. Ebert, Ph. Ebert, Ph. Ebert, Ph. Ebert, Ph. Ebert, Ph. Ebert, S. Aloni, S. B. Zhang, S. B. Zhang, U. Scherz, U. Schröeder, W. Mönch   +29 more
core   +1 more source

Atomic Layer Deposition in Transistors and Monolithic 3D Integration

Advanced Functional Materials, EarlyView.
Transistors are fundamental building blocks of modern electronics. This review summarizes recent progress in atomic layer deposition (ALD) for the synthesis of two‐dimensional (2D) metal oxides and transition‐metal dichalcogenides (TMDCs), with particular emphasis on their enabling role in monolithic three‐dimensional (M3D) integration for next ...
Yue Liu, Taoyu Zou, Cheng‐Yan Xu, Liang Zhen, Yang Li, Yong‐Young Noh   +5 more
wiley   +1 more source

Kinetic Regimes of Hydrogen Absorption in Thin Films

Advanced Functional Materials, EarlyView.
Knowledge of the hydrogen incorporation mechanisms in thin layers in relation to the amount absorbed is essential to design coatings and devices compatible with hydrogen‐based technologies. A combination of simultaneous in situ methods gives detailed insight into the hydrogenation of a prototypical hydrogen absorber layer in a time‐dependent manner ...
Laura Guasco, Sabine Pütter, Yury N. Khaydukov, Luca Silvi, Mariano A. Paulin, Attila Csik, Thomas Keller, Bernhard Keimer   +7 more
wiley   +1 more source