Quantum Interactions and Control Group

To engineer semiconductor nanosystems where interactions can be controlled and studied. Systems of interest are quantum wires, quantum wells, and quantum Hall effect. The quantum numbers to be manipulated are the spin index, valley index, and layer index in multilayer systems, measured at low temperatures and high magnetic fields where Luttinger liquids, quantum Hall ferromagnets, and multi-valley systems can be probed. This research will have applications in quantum information processing and cryogenic thermoelectrics.

Hole Spins Cryo-Thermoelectrics Quantum Hall Effect
Electron Valleys Hole Spins Cryo-Thermoelectrics Quantum Hall Effect

Matthew Grayson
Associate Professor 
Electrical Engineering and Computer Science Department 
Solid State & Photonics Division

Office: Tech L387
Email: m-grayson (at) northwestern.edu
Phone: 847-491-8137
Fax: 847-491-4455

Research Summary: To engineer semiconductor nanosystems where interactions can be controlled and studied. Systems of interest are quantum wires, quantum wells, and quantum Hall effect. The quantum numbers to be manipulated are the spin index, valley index, and layer index in multilayer systems, measured at low temperatures and high magnetic fields where Luttinger liquids, quantum Hall ferromagnets, and multi-valley systems can be probed. This research will have applications in quantum information processing and cryogenic thermoelectrics

Affiliated Research Division: SSP - Solid State & Photonics

Honors and awards

NSF CAREER Award 2008: "Bose-Einstein Condensation Using Different Flavors of Electrons"
Teacher of the Year 2008, Electrical Engineering and Computer Science (VIDEO)

Events

ETOPiA - Engineering Transdisciplinary Outreach Project in the Arts "Copenhagen" by Michael Frayn (VIDEO)

Archived Seminars

"Topological Insulators: Electronic Materials for the Sorcerer's Apprentice"( VIDEO), 
Meet the EECS Faculty Lecture, Northwestern University, March 30, 2011

"Luttinger Liquids and the Exotic World of One-Dimensional Conductors" (VIDEO)
Meet the EECSFaculty Lecture, Northwestern University, November 1, 2007

"Bending the Quantum Hall Effect -- Metallic and Insulating States in One-Dimension" (SLIDES + AUDIO), UC Santa Barbara, October 13, 2005

"Tunneling into a Sharp QHE Edge" (SLIDES + AUDIO) UC Santa Barbara, August 10, 1998

Matthew Grayson's Research Group
Graduate Group Members (NU):

Jiajun Luo

Sunanda Prabhu-GaunkarRyan Fellow in Nanotechnology

Yang Tang, Ryan Fellow in Nanotechnology

Chuanle Zhou

Wang Zhou

Undergrad Group Members (NU):

Albert Cheng

Bradley Crowe

Brian Kim, Best EECS Senior Award 2011

Gracie Klock

Siddharth Narayanan

Andrew Varrenti

PhD advisees (Technische Universitaet Muenchen):

Michael Huber

Nebile Isik

<p">Lucia Steinke

PhD Alumni (Technische Universitaet Muenchen):

Shivaji Dasgupta (PhD 2009): "Growth optimization and characterization of high mobility two-dimensional electron systems in AlAs quantum wells"

Sebastian Roth (PhD 2007): "n- and p-type transport in (110) GaAs substrates, single-, and double-cleave structures"

Frank Ertl (PhD 2006): "Anisotrope Quanten-Hall-Systeme, Vertikale Ultrakurzkanal- und Tunnel-Transistoren" (Anisotropic quantum Hall systems, vertical ultrashort-channel- and tunnel-transistors.)

Frank Fischer (PhD 2005): "Growth and electronic properties of two-dimensional systems in (110) oriented GaAs"

Masters/Diplom Alumni (Technische Universitaet Muenchen):

Andrew Varrenti (MS 2010): "Lithographically patterned chromium-nickel thermocouples for integrated circuit temperature sensing applications"

Yash Shah (MS 2011): "A methodical approach towards realizing capacitive contacts for electrical four‐point characterization"

Claudius Knaak (Diplom 2007): "Investigating valley degeneracy in AlAs two-dimensional systems and split-gate structures"

Marco Neumair (Diplom 2007): "Tunneling between perpendicular two-dimensional electron systems"

Ying Xiang (Diplom 2006): "Two dimensional hole systems on (110) GaAs and cleave facets"

Lucia Steinke (Diplom 2005): "Quantum Hall effect in perpendicular two-dimensional electron systems"

Felix Erfurth (Diplom 2005): "Characterization of quantum point contacts in aluminum arsenide"

Sebastian Roth (Diplom 2003): "Resonant tunneling through coupled quantum wires between two-dimensional electron gases"

2013
“Driving perpendicular heat flow: (p x n)-type transverse thermoelectrics for microscale and cryogenic Peltier cooling”
Chuanle Zhou, Yang Tang, Karen Heinselman, Stefan Birner, M. Grayson 
Physical Review Letters 110, 227701 (2013).

"Transient photoresponse in amorphous In-Ga-Zn-O thin films under stretched exponential analysis"
Jiajun Luo, Alexander U. Adler, Thomas O. Mason, D. Bruce Buchholz, R.P.H. Chang, and M. Grayson 
Journal of Applied Physics 113, 153709 (2013), 

“Hartree simulations of coupled quantum Hall edge states in corner-overgrown heterostructures”
L. Steinke, P. Cantwell, E. Stach, D. Schuh, A. Fontcuberta i Morral, M. Bichler, G. Abstreiter, M. Grayson 
Physical Review B 87, 165428 (2013).

2012
“Optimization of AlAs/AlGaAs quantum well heterostructures on on-axis and misoriented GaAs (111)B”
F. Herzog, M. Bichler, G. Koblmueller, S. Prabhu-Gaunkar, W. Zhou, and M. Grayson 
Applied Physics Letters 100, 192106 (2012).

"Thermal conductivity of InAs/GaSb superlattice,”
Chuanle Zhou, B.-M. Nguyen, M. Razeghi, and M. Grayson 
Journal of Electronic Materials, 41, 2322 (2012).

“Generalized four-point characterization method for resistive and capacitive contacts”

Brian S. Kim, Wang Zhou, Yash D. Shah, Chuanle Zhou, Nebile Isik, and M. Grayson 
Review of Scientific Instruments 83, 024703 (2012).

“The visibility of IQHE at sharp edges: Experimental proposals based on interactions and edge electrostatics”
U. Erkarslan, G. Oylumluoglu, M. Grayson, and A. Siddiki 
New Journal of Physics 14, 023015 (2012)

2011
“Valley degeneracy in biaxially strained AlAs quantum wells”
S. Prabhu-Gaunkar, S. Dasgupta, S. Birner, C. Knaak, and M. Grayson
Physical Review B 84, 125319 (2011).

“An inverse design approach to hole doping in ternary oxides: Enhancing p-type conductivity in cobalt oxide spinels,”
J. D. Perkins, T. R. Paudel, A. Zakutayev, P. Ndione, P. A. Parilla, D.L. Young, S. Lany, D. S. Ginley, A. Zunger, N. H. Perry, Y. Tang, M. Grayson, T. O. Mason, J. S. Bettinger, Y. Shi and M. F. Toney Physical Review B 84, 205207 (2011).

“Band or Polaron: The hole conduction mechanism in the p-type spinel Rh2ZnO4”
Arpun R. Nagaraja, Nicola H. Perry, Thomas O. Mason, Yang Tang, M. Grayson, Tula R. Paudel, Stephan Lany, Alex Zunger Journal of the American Ceramic Society (2011). doi: 10.1111/j.1551-2916.2011.04771.x

"Thermal sensing with lithographically patterned bimetallic thin-film thermocouples,"
A. R. Varrenti, Chuanle Zhou, A. G. Klock, S. H. Chyung, J. Long, S. O. Memik, M. Grayson 
IEEE Electron Device Letters 32, 818 (2011).

"DC reactive magnetron sputtering, annealing, and characterization of CuAlO2 thin films"
B. Stevens, C. A. Hoel, C. Swanborg, Yang Tang, Chuanle Zhou, M. Grayson, K. R. Poeppelmeier, S. A. 
Barnett Journal of Vacuum Science and Technology A 29, 011018 (2011).

2009
"Quasiparticle Doppelgangers" 
M. Grayson
Physics 2, 56 (2009).

"De Haas-van Alphen effect and energy gaps of a correlated two-dimensional electron system in an AlAs two-valley pseudospin system" 
T. Windisch, X. Huang, S. Dasgupta, B. Rupprecht, Ch. Heyn, M. Bichler, A. Fontcuberta i Morral, M. Grayson, G. Abstreiter, M. A. Wilde, and D. Grundler 
Physical Review B 80, 205306 (2009).

"Investigation of a contacting scheme for self-assembled cleaved edge overgrown InAs nanowires and quantum dot arrays"
M. Fehr, E. Uccelli, S. Dasgupta, M. Bichler, L. Steinke, G. Abstreiter, M. Grayson, A. Fontcuberta
i Morral Phys. Status Solidi A 206, 1620 (2009)

2008

"Nanometer-scale sharpness in corner-overgrown heterostructures"
L. Steinke, P. Cantwell, D. Zakharov, E. Stach, N. J. Zaluzec, A. Fontcuberta i Morral, M. Bichler, G. Abstreiter, and M. Grayson
Appl. Phys. Lett. 93 , 193117 (2008) (.pdf 367 kB)

"Single-valley high-mobility (110) AlAs quantum wells with anisotropic mass"
S. Dasgupta, S. Birner, C. Knaak, M. Bichler, A. Fontcuberta i Morral, G. Abstreiter, and M. Grayson
Appl. Phys. Lett. 93 , 132102 (2008) (.pdf 358 kB)

"Hopping conduction in strongly insulating states of a diffusive bent quantum Hall junction"
L. Steinke, D. Schuh, M. Bichler, G. Abstreiter, and M. Grayson
Phys. Rev. B 77 , 235219 (2008) (.pdf 289 kB)

"Shadow modulated two-dimensional heterostructures using vertical pillars"
N. Işık, M. Bichler, S. F. Roth, A. Fontcuberta i Morral, O. Göktaş, and M. Grayson
Appl. Phys. Lett. 92, 173505 (2008) (.pdf 274 kB)

"Sharp quantum Hall edges: Experimental realizations of edge states without compressible strips"
Matthew Grayson, Lucia Steinke, Michael Huber, Dieter Schuh, Max Bichler, and Gerhard Abstreiter
Phys. Stat. Sol. (b) 245, 356 (2008) (.pdf 2.78 MB)

2007

"Donor binding energy and thermally activated persistent photoconductivity in high mobility (001) AlAs quantum wells" 
S. Dasgupta, C. Knaak, J. Moser, M. Bichler, S. F. Roth, A. Fontcuberta i Morral, G. Abstreiter, and M. Grayson 
Appl. Phys. Lett. 91, 142120 (2007) (.pdf 85 kB)

"Metallic and insulating states at a bent quantum Hall junction" 
M. Grayson, L. Steinke, D. Schuh, M. Bichler, L. Hoeppel, J. Smet, K. v. Klitzing, D. K. Maude, and G. Abstreiter
Phys. Rev. B 76, 201304 (2007) (.pdf 521 kB)

 "Transport evidence of a lowest Landau-level spin-index anticrossing in (110 GaAs two-dimenstional holes" 
F. Fischer, R. Winkler, D. Schuh, M. Bicler, G. Abstreiter and M. Grayson
Phys. Rev. B 75, 073303 (2007) (.pdf 127 kB)

2006

"Vertical quantum wire realized by double cleaved-edge overgrowth" 
S. F. Roth, H. J. Krenner, D. Schuh, M. Bichler, and M. Grayson
Appl. Phys. Lett. 89, 032102 (2006) (.pdf 240 kB)

"Electron correlations on the fractional quantum Hall edge"
M. Grayson
Solid State Commun. 140, 66 (2006) (.pdf 680 kB)

"Disordered AlAs wires: Temperature-dependent resonance areas withing the Fermi liquid paradigm"
J. Moser, S. Roddaro, D. Schuh, M. Bichler, V. Pellegrini and M. Grayson
Phys. Rev. B 74, 193307 (2006) (.pdf 930 kB)

2005

"Structure of a single sharp quantum Hall edge probed by momentum-resolved tunneling"
M. Huber, M. Grayson, M. Rother, W. Biberacher, W. Wegscheider, and G. Abstreiter
Phys. Rev. Lett. 94, 016805 (2005) (.pdf 350 kB)

"Corner overgrowth:  Bending a high-mobility two-dimensional electron system by 90°"
M. Grayson, D. Schuh, M. Huber, M. Bichler, and G. Abstreiter
Appl. Phys. Lett. 86, 032101 (2005) (.pdf 240 kB)

"Modulating the growth conditions: Si as an acceptor in (110) GaAs for high mobility p-type heterostructures"
F. Fischer, D. Schuh, M. Bichler, G. Abstreiter, M. Grayson and K. Neumaier
Appl. Phys. Lett. 86, 192106 (2005) (.pdf 128 kB)

"Measuring carrier density in parallel conduction layers of quantum Hall systems"
M. Grayson and F. Fischer; J. 
Appl. Phys. 98, 013709 (2005) (.pdf 97 kB)

"Influence of voltmeter input impedance on quantum Hall measurements"
F. Fischer and M. Grayson
J. Appl. Phys. 98, 013710 (2005) (.pdf 152 kB)

"Aluminum arsenide cleaved-edge quantum wires"
J. Moser, T. Zibold, S. Roddaro, D. Schuh, M. Bichler, V. Pellegrini, G. Abstreiter and M. Grayson
Appl. Phys. Lett. 87, 052101 (2005) (.pdf 270 kB)

"Four-point measurements on n-and p-type two-dimensional systems fabricated by cleaved-edge overgrowth" 
M. Grayson, S. F. Roth, Y. Xiang, F. Fischer, D. Schuh and M. Bichler
Appl. Phys. Lett. 87, 212113 (2005) (.pdf 125 kB)

 

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