Publications


Single exciton trapping in an electrostatically defined 2D semiconductor quantum dot
D.N. Shanks, F. Mahdikhanysarvejahany, M.R. Koehler, D.G. Mandrus, T. Taniguchi, K. Watanabe, B.J. LeRoy, J.R. Schaibley
arXiv, 2206.13427 (2022).

Interlayer Exciton Diode and Transistor
D.N. Shanks, F. Mahdikhanysarvejahany, T. Stanfill, M.R. Koehler, D.G. Mandrus, T. Taniguchi, K. Watanabe, B.J. LeRoy, J.R. Schaibley
arXiv, 2203.09444 (2022).

Localized Interlayer Excitons in MoSe2-WSe2 Heterostructures without a Moiré Potential
F. Mahdikhanysarvejahany, D.N. Shanks, M. Klein, Q. Wang, M.R. Koehler, D.G. Mandrus, T. Taniguchi, K. Watanabe, O.L.A. Monti, B.J. LeRoy, J.R. Schaibley
arXiv, 2203.08052 (2022).

Phonon lifetimes in boron isotope enriched graphene-hBN devices
A. Brasington, S. Liu, T. Taniguchi, K. Watanabe, J.H. Edgar, B.J. LeRoy and A. Sandhu
Phys Status Solidi Rapid Res Lett 16, 2200030 (2022).

Direct STM Measurements of R- and H-type Twisted MoSe2/WSe2 Heterostructures
R. Nieken, A. Roche, F. Mahdikhanysarvejahany, T. Taniguchi, K. Watanabe, M.R. Koehler, D.G. Mandrus, J.R. Schaibley, and B.J. LeRoy
APL Materials 10, 031107 (2022).

Nanoscale trapping of interlayer excitons in a 2D semiconductor heterostructure
D.N. Shanks, F. Mahdikhanysarvejahany, C. Muccianti, A. Alfrey, M.R. Koehler, D.G. Mandrus, T. Taniguchi, K. Watanabe, H. Yu, B.J. LeRoy and J.R. Schaibley
Nano Letters 21, 5641-5647 (2021).

Temperature dependent moire trapping of interlayer excitons in MoSe2-WSe2 heterostructures
F. Mahdikhanysarvejahany, D.N. Meade, B.H. Badada, C. Muccianti, I. Idi, A. Alfrey, S. Raglow, M.R. Koehler, D.G. Mandrus, T. Taniguchi, K. Watanabe, O.L.A. Monti, H. Yu, B.J. LeRoy and J.R. Schaibley
npj 2D Materials and Applications 5, 67 (2021).

Role of defects and phonons in bandgap dynamics of monolayer WS2 at high carrier densities
A. Brasington, D. Golla, A. Dave, B. Chen, S. Tongay, J. Schaibley, B.J. LeRoy and A. Sandhu
Journal of Physics: Materials 4, 015005 (2021).

Coupled 2D Semiconductor-Molecular Excitons with Enhanced Raman Scattering
C. Muccianti, S. Zachritz, A. Garlant, C. Eads, B. Badada, A. Alfrey, M. Koehler, D. Mandrus, R. Binder, B.J. LeRoy, O. Monti, J. Schaibley
The Journal of Physical Chemistry C 124, 27637-27644 (2020).

Local characterization and engineering of proximitized correlated states in graphene-NbSe2 vertical heterostructures
Z. Zhang, K. Watanabe, T. Taniguchi, B.J. LeRoy
Physical Review B 102, 085429 (2020).

Probing the wavefunctions of correlated states in magic angle graphene
Z. Zhang, R. Myers, K. Watanabe, T. Taniguchi, B.J. LeRoy
Physical Review Research 2, 033181 (2020).

Flat bands in twisted bilayer transition metal dichalcogenides
Z. Zhang, Y. Wang, K. Watanabe, T. Taniguchi, K. Ueno, E. Tutuc, B.J. LeRoy
Nature Physics 16, 1093-1096 (2020).

2D Semiconductor Nonlinear Plasmonic Modulators
M. Klein, B.H. Badada, R. Binder, A. Alfrey, M. McKie, M.R. Koehler, D.G. Mandrus, T. Taniguchi, K. Watanabe, B.J. LeRoy, J.R. Schaibley
Nature Communications 10, 3264 (2019).

van der Waals heterostructures combining graphene and hexagonal boron nitride
M. Yankowitz, Q. Ma, P. Jarillo-Herrero, B.J. LeRoy
Nature Reviews Physics 1, 112-125 (2019).

Topologically Protected Helical States in Minimally Twisted Bilayer Graphene
S. Huang, K. Kim, D.K. Efimkin, T. Lovorn, T. Taniguchi, K. Watanabe, A.H. MacDonald, E. Tutuc, B.J. LeRoy
Physical Review Letters 121, 037702 (2018).

Temperature dependence of interlayer coupling in perpendicular magnetic tunnel junctions with GdOX barriers
T. Newhouse-Illige, Y. H. Xu, Y. H. Liu, S. Huang, H. Kato, C. Bi, M. Xu, B. J. LeRoy, and W. G. Wang
Applied Physics Letters 112, 072404 (2018).

Evolution of the electronic band structure of twisted bilayer graphene upon doping
S. Huang, M. Yankowitz, K. Chattrakun, A. Sandhu, B.J. LeRoy
Scientific Reports 7, 7611 (2017).

Ultrafast relaxation of hot phonons in graphene-hBN heterostructures
D. Golla, A. Brasington, B.J. LeRoy, and A. Sandhu
APL Materials 5, 056101 (2017).

Tunable moire bands and strong correlations in small-twist-angle bilayer graphene
K. Kim, A. DaSilva, S. Huang, B. Fallahazad, S. Larentis, T. Taniguchi, K. Watanabe, B.J. LeRoy, A.H. MacDonald, and E. Tutuc
PNAS 114, 3364-3369 (2017).

2D materials advances: from large scale synthesis and controlled heterostructures to improved characterization techniques, defects and applications
Z. Lin, A. McCreary, N. Briggs, S. Subramanian, K. Zhang, Y. Sun, X. Li, N.J. Borys, H. Yuan, S.K. Fullerton-Shirey, A. Chernikov, H. Zhao, S. McDonnell, A.M. Lindenberg, K. Xiao, B.J. LeRoy, M. Drndić, J.C.M. Hwang, J. Park, M. Chhowalla, R.E. Schaak, A. Javey, M.C. Hersam, J. Robinson, M. Terrones
2D Materials 3, 042001 (2016).

Pressure induced commensurate stacking of graphene on boron nitride
M. Yankowitz, K. Watanabe, T. Taniguchi, P. San-Jose, B.J. LeRoy
Nature Communications 7, 13168 (2016).

Van der Waals heterostructures with high accuracy rotational alignment
K. Kim, M. Yankowitz, B. Fallahazad, S. Kang, H.C.P. Movva, S. Huang, S. Larentis, C.M. Corbet, T. Taniguchi, K. Watanabe, S.K. Banerjee, B.J. LeRoy, E. Tutuc
Nano Letters 16, 1989-1995 (2016).

Scanning gate microscopy of ultra clean carbon nanotube quantum dots
J. Xue, R. Dhall, S.B. Cronin, B.J. LeRoy
arXiv:1508.05462 (2015).

Local spectroscopic characterization of spin and layer polarization in WSe2
M. Yankowitz, D. McKenzie, B.J. LeRoy
Physical Review Letters 115, 136803 (2015).

Intrinsic disorder in graphene on transition metal dichalcogenide heterostructures
M. Yankowitz, S. Larentis, K. Kim, J. Xue, D. McKenzie, S. Huang, M. Paggen, M.N. Ali, R.J. Cava, E. Tutuc, B.J. LeRoy
Nano Letters 15, 1925-1929 (2015).

Band Structure Mapping of Bilayer Graphene via Quasiparticle Scattering
M. Yankowitz, J.I-J. Wang, S. Li, A.G. Birdwell, Y.-A. Chen, K. Watanabe, T. Taniguchi, S.Y. Quek, P. Jarillo-Herrero, B.J. LeRoy
APL Materials 2, 092503 (2014).

Emergent complex states in bilayer graphene
B.J. LeRoy and M. Yankowitz
Science 345, 31 (2014).

Optical characterization of electron-phonon interactions at the saddle point in graphene
A. Roberts, R. Binder, N.-H. Kwong, D. Golla, D. Cormode, B.J. LeRoy, H.O. Everitt, and A. Sandhu
Physical Review Letters 112, 187401 (2014).

Electric Field Control of Soliton Motion and Stacking in Trilayer Graphene
M. Yankowitz, J.I-J. Wang, A.G. Birdwell, Y.-A. Chen, K. Watanabe, T. Taniguchi, P. Jacquod, P. San-Jose, P. Jarillo-Herrero, B.J. LeRoy
Nature Materials 13, 786-789 (2014).
See UA News, nanotechweb, MaterialsToday, KurzweilAI.

Graphene on Hexagonal Boron Nitride
M. Yankowitz, J. Xue, B.J. LeRoy
J. Phys.: Condens. Matter, 26 303201 (2014) Topical Review.

Gate dependent Raman spectroscopy of graphene on boron nitride
K. Chattrakun, S. Huang, K. Watanabe, T. Taniguchi, A. Sandhu, B.J. LeRoy
J. Phys.: Condens. Matter 25 505304 (2013).

Massive Dirac Fermions and Hofstadter Butterfly in a van der Waals Heterostructure
B. Hunt, J.D. Sanchez-Yamagishi, A.F. Young, M. Yankowitz, B.J. LeRoy, K. Watanabe, T. Taniguchi, P. Moon, M. Koshino, P. Jarillo-Herrero, R.C. Ashoori
Science 340, 1427 (2013).
See Perspective.

Optical Thickness Determination of Hexagonal Boron Nitride flakes
D. Golla, K. Chattrakun, K. Watanabe, T. Taniguchi, B.J. LeRoy, and A. Sandhu
Applied Physics Letters 99, 161906 (2013).

Local Spectroscopy of the Electrically Tunable Band Gap in Trilayer Graphene
M. Yankowitz, F. Wang, C.N. Lau, B.J. LeRoy
Physical Revew B 87, 165102 (2013).

Emergence of superlattice Dirac points in graphene on hexagonal boron nitride
M. Yankowitz, J. Xue, D. Cormode, J. Sanchez-Yamagishi, K. Watanabe, T. Taniguchi,
P. Jarillo-Herrero, P. Jacquod and B.J. LeRoy
Nature Physics 8, 382-386 (2012).
See UA News story.

Long wavelength local density of states oscillations near graphene step edges
J. Xue, J. Sanchez-Yamagishi, K. Watanabe, T. Taniguchi, P. Jarillo-Herrero, B. J. LeRoy
Physical Review Letters 108, 016801 (2012).

Scanning probe microscopy of graphene
A. Deshpande and B.J. LeRoy
Physica E 44, 743-759 (2012). (invited review article)

Response of graphene to femtosecond high–intensity laser irradiation
A. Roberts, D. Cormode, C. Reynolds, T. Newhouse–Illige, B.J. LeRoy, and A.S. Sandhu
Applied Physics Letters 99, 051912 (2011).

Scanning tunnelling microscopy and spectroscopy of ultra-flat graphene on hexagonal boron nitride
J. Xue, J. Sanchez-Yamagishi, D. Bulmash, P. Jacquod, A. Deshpande, K. Watanabe, T. Taniguchi, P. Jarillo-Herrero and B.J. LeRoy
Nature Materials 10, 282-285 (2011).
See UA News story.

Imaging charge density fluctuations in graphene using Coulomb blockade spectroscopy
A. Deshpande, W. Bao, Z. Zhao, C.N. Lau, and B.J. LeRoy
Physical Review B 83, 155409 (2011).
See accompanying synopsis in Physics.

Spatial mapping of the Dirac point in monolayer and bilayer graphene
A. Deshpande, W. Bao, Z. Zhao, C.N. Lau, and B.J. LeRoy
IEEE Transactions on Nanotechnology 10, 88-91 (2011).

Lithography-free Fabrication of High Quality Substrate-supported and Suspended Graphene devices
W. Bao, G. Liu, Z. Zhao, H. Zhang, D. Yan, A. Deshpande, B.J. LeRoy, and C.N. Lau
Nano Research 3, 98 (2010).

Mapping the Dirac point in gated bilayer graphene
A. Deshpande, W. Bao, Z. Zhao, C.N. Lau, and B.J. LeRoy
Applied Physics Letters 95, 243502 (2009).

Spatially resolved spectroscopy of monolayer graphene on SiO2
A. Deshpande, W. Bao, F. Miao, C.N. Lau, and B.J. LeRoy
Physical Review B 79, 205411 (2009).
See accompanying synopsis in Physics.

Simultaneous electrical transport and scanning tunneling spectroscopy of carbon nanotubes
B.J. LeRoy, I. Heller, V.K. Pahilwani, C. Dekker and S.G. Lemay
Nano Letters 7, 2937 (2007).

Three-terminal scanning tunneling spectroscopy of suspended carbon nanotubes
B.J. LeRoy, J. Kong, V.K. Pahilwani, C. Dekker and S.G. Lemay
Physical Review B 72, 075413 (2005).

Integration of a gate electrode into carbon nanotube devices for scanning tunneling microscopy
J. Kong, B.J. LeRoy, S.G. Lemay and C. Dekker
Applied Physics Letters 86, 112106 (2005).

Imaging electron interferometer
B.J. LeRoy, A.C. Bleszynski, K.E. Aidala, R.M. Westervelt, A. Kalben, E.J. Heller, S.E.J. Shaw, K.D. Maranowski, and A.C. Gossard
Physical Review Letters 94, 126801 (2005).

Electrical generation and absorption of phonons in carbon nanotubes
B.J. LeRoy, S.G. Lemay, J. Kong and C. Dekker
Nature 432, 371 (2004).

Scanning tunneling spectroscopy of suspended single-wall carbon nanotubes
B.J. LeRoy, S.G. Lemay, J. Kong and C. Dekker
Applied Physics Letters 84, 4280 (2004).

Imaging Coherent Electron Flow Through Semiconductor Nanostructures
B.J. LeRoy
Ph.D. Thesis, Harvard University (2003).

Imaging Coherent Electron Flow
B.J. LeRoy, A.C. Bleszynski, M.A. Topinka, R.M. Westervelt, S.E.J. Shaw, E.J. Heller, K.D. Maranowski and A.C. Gossard
Proceedings of the International Conference on the Physics of Semiconductors (ICPS), cond-mat/0208194.

Imaging Electron Density in a Two-Dimensional Electron Gas
B.J. LeRoy, M.A. Topinka, R.M. Westervelt, K.D. Maranowski and A.C. Gossard
Applied Physics Letters 80, 4431 (2002).

Coherent Branched Flow in a Two-Dimensional Electron Gas
M.A. Topinka, B.J. LeRoy, R.M. Westervelt, S.E.J. Shaw, R. Fleischmann, E.J. Heller, K.D. Maranowski, A.C. Gossard
Nature 410, 183 (2001).

Imaging Coherent Electron Flow From a Quantum Point Contact
M.A. Topinka, B.J. LeRoy, S.E.J. Shaw, E.J. Heller, R.M. Westervelt, K.D. Maranowski, A.C. Gossard
Science 289, 2323 (2000).