Zobrazeno 1 - 10
of 62
pro vyhledávání: '"See, Patrick"'
Autor:
Bustamante, José, Miyahara, Yoichi, Fairgrieve-Park, Logan, Spruce, Kieran, See, Patrick, Curson, Neil, Stock, Taylor, Grutter, Peter
The ongoing development of single electron, nano and atomic scale semiconductor devices would benefit greatly from a characterization tool capable of detecting single electron charging events with high spatial resolution, at low temperature. In this
Externí odkaz:
http://arxiv.org/abs/2403.13935
Autor:
Yan, Chengyu, Pepper, Michael, See, Patrick, Farrer, Ian, Ritchie, David, Griffiths, Jonathan
Publikováno v:
Sci Rep 10, 2593 (2020)
We report an all-electric integrable electron focusing lens in n-type GaAs. It is shown that a pronounced focusing peak takes place when the focal point aligns with an on-chip detector. The intensity and full width half maximum (FWHM) of the focusing
Externí odkaz:
http://arxiv.org/abs/2002.04307
Autor:
Yan, Chengyu, Pepper, Michael, See, Patrick, Farrer, Ian, Ritchie, David, Griffiths, Jonathan
Publikováno v:
Appl. Phys. Lett. 115, 202102 (2019)
We studied the thermal conduction through a quantum point contact (QPC), defined in GaAs-AlGaAs heterostructure, in the presence of a transverse magnetic field. A shift in the position of thermo-voltage peak is observed with increasing field. The pos
Externí odkaz:
http://arxiv.org/abs/1903.06096
Autor:
Yan, Chengyu, Kumar, Sanjeev, See, Patrick, Farrer, Ian, Ritchie, David, Griffiths, J. P., Jones, G. A. C., Pepper, Michael
Publikováno v:
Appl. Phys. Lett. 113, 112101 (2018)
In this work, we performed magnetoresistance measurement in a hybrid system consisting of an arc-shaped quantum point contact (QPC) and a flat, rectangular QPC, both of which together form an electronic cavity between them. The results highlight a tr
Externí odkaz:
http://arxiv.org/abs/1809.03552
Autor:
Yan, Chengyu, Kumar, Sanjeev, Pepper, Michael, See, Patrick, Farrer, Ian, Ritchie, David, Griffiths, Jonathan, Jones, Geraint
Publikováno v:
Phys. Rev. B 97, 241302 (2018)
In the present work we provide an easily accessible way to achieve the singlet-triplet Kondo effect in a hybrid system consisting of a quantum point contact (QPC) coupled to an electronic cavity. We show that by activating the coupling between the QP
Externí odkaz:
http://arxiv.org/abs/1806.11065
Publikováno v:
Phys. Rev. Applied 13, 024070 (2020)
We present measurements of microwave-induced Shapiro steps in a superconducting nanobridge weak link in the dissipative branch of a hysteretic current-voltage characteristic. We demonstrate that Shapiro steps can be used to infer a reduced critical c
Externí odkaz:
http://arxiv.org/abs/1806.10420
Autor:
Yan, Chengyu, Kumar, Sanjeev, Thomas, Kalarikad, See, Patrick, Farrer, Ian, Ritchie, David, Griffiths, Jonathan, Jones, Geraint, Pepper, Michael
Publikováno v:
Phys. Rev. Lett. 120, 137701 (2018)
We report spin amplification using a capacitive beam splitter in n-type GaAs where the spin polarization is monitored via transverse electron focusing measurement. It is shown that partially spin-polarized current injected by the emitter can be preci
Externí odkaz:
http://arxiv.org/abs/1803.10171
Autor:
Yan, Chengyu, Kumar, Sanjeev, Pepper, Michael, See, Patrick, Farrer, Ian, Ritchie, David, Griffiths, Jonathan, Jones, Geraint
We present experimental results of transverse electron-focusing measurements performed using n-type GaAs. In the presence of a small transverse magnetic field (B), electrons are focused from the injector to detector leading to focusing peaks periodic
Externí odkaz:
http://arxiv.org/abs/1709.07861
Autor:
Yan, Chengyu, Kumar, Sanjeev, Pepper, Michael, See, Patrick, Farrer, Ian, Ritchie, David, Griffiths, Jonathan, Jones, Geraint
Publikováno v:
Physical Review APPLIED 8, 024009 (2017)
We show experimentally how quantum interference can be produced using an integrated quantum system comprising an arch-shaped short quantum wire (or quantum point contact, QPC) of 1D electrons and a reflector forming an electronic cavity. On tuning th
Externí odkaz:
http://arxiv.org/abs/1708.05431
Autor:
Yan, Chengyu, Kumar, Sanjeev, Thomas, Kalarikad, Pepper, Michael, See, Patrick, Farrer, Ian, Ritchie, David, Griffiths, J. P., Jones, G. A. C.
We present experimental results of transverse electron focusing measurements performed on an n-type GaAs based mesoscopic device consisting of one-dimensional (1D) quantum wires as injector and detector. We show that non-adiabatic injection of 1D ele
Externí odkaz:
http://arxiv.org/abs/1707.04575