Zobrazeno 1 - 10
of 4 765
pro vyhledávání: '"Westervelt, Robert"'
Autor:
Kreidel, Mary, Chu, Xuanjing, Balgley, Jesse, Antony, Abhinandan, Verma, Nishchhal, Ingham, Julian, Ranzani, Leonardo, Queiroz, Raquel, Westervelt, Robert M., Hone, James, Fong, Kin Chung
The discovery of van der Waals superconductors in recent years has generated a lot of excitement for their potentially novel pairing mechanisms. However, their typical atomic-scale thickness and micrometer-scale lateral dimensions impose severe chall
Externí odkaz:
http://arxiv.org/abs/2407.09916
Autor:
Banerjee, Abhishek, Hao, Zeyu, Kreidel, Mary, Ledwith, Patrick, Phinney, Isabelle, Park, Jeong Min, Zimmerman, Andrew M., Watanabe, Kenji, Taniguchi, Takashi, Westervelt, Robert M, Jarillo-Herrero, Pablo, Volkov, Pavel A., Vishwanath, Ashvin, Fong, Kin Chung, Kim, Philip
The robustness of the macroscopic quantum nature of a superconductor can be characterized by the superfluid stiffness, $\rho_s$, a quantity that describes the energy required to vary the phase of the macroscopic quantum wave function. In unconvention
Externí odkaz:
http://arxiv.org/abs/2406.13742
Autor:
Bhandari, Sagar, Kreidel, Mary, Kelser, Alexander, Lee, Gil-Ho, Watanabe, Kenji, Taniguchi, Takashi, Kim, Philip, Westervelt, Robert M
A beam of holes formed in graphene by a collimating contact is imaged using a liquid-He cooled scanning probe microscope (SPM). The mean free path of holes is greater than the device dimensions. A zigzag shaped pattern on both sides of the collimatin
Externí odkaz:
http://arxiv.org/abs/1912.12574
Autor:
Bhandari, Sagar, Lee, Gil-Ho, Watanabe, Kenji, Taniguchi, Takashi, Kim, Philip, Westervelt, Robert M
The ballistic motion of electrons in graphene encapsulated in hexagonal boron nitride (hBN) promises exciting opportunities for electron-optics devices. A narrow electron beam is desired, with both the mean free path and coherence length exceeding th
Externí odkaz:
http://arxiv.org/abs/1710.10186
Autor:
Bhandari, Sagar, Wang, Ke, Watanabe, Kenji, Taniguchi, Takashi, Kim, Philip, Westervelt, Robert M.
Among newly discovered two-dimensional (2D) materials, semiconducting ultrathin sheets of MoS2 show potential for nanoelectronics. However, the carrier mobility in MoS2 is limited by scattering from surface impurities and the substrate. To probe the
Externí odkaz:
http://arxiv.org/abs/1701.07532
A cooled scanning probe microscope (SPM) has been used to image cyclotron orbits of electrons through high-mobility graphene in a magnetic field.1-5 In a hBN-graphene-hBN device patterned into a hall bar geometry, the magnetic field focuses a current
Externí odkaz:
http://arxiv.org/abs/1611.04865
Autor:
Bhandari, Sagar, Westervelt, Robert M.
Research in semiconductor physics has advanced to the study of two-dimensional (2D) materials where the surface controls electronic transport. A scanning probe microscope (SPM) is an ideal tool to image electronic motion in these devices by using the
Externí odkaz:
http://arxiv.org/abs/1608.02226
We use a cooled Scanning Probe Microscope (SPM) to electron motion in nanoscale devices. The charged tip of the SPM is raster scanned at a constant height above the surface as the conductance of the device is measured. The image charge scatters elect
Externí odkaz:
http://arxiv.org/abs/1608.02248
Autor:
Bhandari, Sagar, Wang, Ke, Watanabe, Kenji, Taniguchi, Takashi, Kim, Philip, Westervelt, Robert M.
Ultrathin sheets of MoS2 are a newly discovered 2D semiconductor that holds great promise for nanoelectronics. Understanding the pattern of current flow will be crucial for developing devices. In this talk, we present images of current flow in MoS2 o
Externí odkaz:
http://arxiv.org/abs/1608.02250
Publikováno v:
ACS Nano, 2011, 5 (5), pp 3622-3627
We study conductance fluctuations (CF) and the sensitivity of the conductance to the motion of a single scatterer in two-dimensional massless Dirac systems. Our extensive numerical study finds limits to the predicted universal value of CF. We find th
Externí odkaz:
http://arxiv.org/abs/1304.7242