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--- hw2 [2016/03/31 16:50] – [Velocity and effective mass (5 pts)] janet
+++ hw2 [2020/03/06 09:14] (current) – external edit 127.0.0.1
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 ====== Homework #2  ======
 PH 671 - Spring 2016, //Due 5pm on Friday, Week 2//
-**Under construction - will remove when ready**
 ===== Journal reading (5 pts) =====
@@ Line 46: / Line 44: @@
 Estimate the energy in eV of the highest frequency phonon in graphene (this phonon mode will show up in many types of experiments, including Raman spectroscopy of graphene). Use the following simplifying assumptions:
   *Treat the graphene lattice as square grid.
-  *Choose an interatomic spacing that gives the correct area per unit mass for graphene, i.e. 1500 m<sup>3</sup>/gram.
+  *Choose an interatomic spacing that gives the correct area per unit mass for graphene, i.e. 1500 m<sup>2</sup>/gram.
-  *You can check your answer by reading this {{:2000-prl_current_saturation_in_cnt.pdf|Phys. Rev. Lett. paper}}, where the authors observe that a phonon with energy 160 meV is responsible for current saturatation in CNTs.
+  *You can check your answer by reading this [[http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.84.2941|Phys. Rev. Lett. paper]], where the authors observe that a phonon with energy 160 meV is responsible for current saturation in CNTs.
+===== Articles ====
+  * //Electron-Phonon Coupling and Energy Flow in a Simple Metal beyond the Two-Temperature Approximation//, (Lutz Waldecker, Roman Bertoni, Ralph Ernstorfer, and Jan Vorberger, PHYSICAL REVIEW X 6, 021003; 6 April 2016) [[https://journals.aps.org/prx/abstract/10.1103/PhysRevX.6.021003]]
+  * //Current oscillations as a manifestation of spatio-temporal inhomogeneity of temperature distribution in vanadium dioxide films at semiconductor-metal phase transition//,  V. Aliev. et al., Appl. Phys. Lett. 105, 142101 (2014); [[http://dx.doi.org/10.1063/1.4897529]]
+  * //Zener Tunneling and Photocurrent Generation in Quasi-Metallic Carbon Nanotube pn-Device//s, Amer et al. Nano Lett., 2013, 13 (11), pp 5129–5134, [[http://pubs.acs.org/doi/abs/10.1021/nl402334e]]
+  * //Ultrafast Photocurrent Measurement of the Escape Time of Electrons and Holes from Carbon Nanotube p−i−n Photodiodes//, Nathaniel M. Gabor, Zhaohui Zhong, Ken Bosnick, and Paul L. McEuen, Phys. Rev. Lett. 108, 087404 (2012); [[http://dx.doi.org/10.1103/PhysRevLett.108.087404]]
+  * //Transient Absorption and Photocurrent Microscopy Show That Hot Electron Supercollisions Describe the Rate-Limiting Relaxation Step in Graphene//, Graham et al., Nano Lett., 2013, 13 (11), pp 5497–5502; [[http://pubs.acs.org/doi/abs/10.1021/nl4030787]]