Publications

• Above-Room-Temperature Ferromagnetism in Thin van der Waals Flakes of Cobalt-Substituted Fe5GeTe2
  Hang Chen*, Shahidul Asif*, Kapildeb Dolui, Yang Wang, Jeyson Tamara Isaza, V. M. L. Durga Prasad Goli, Matthew Whalen, Xinhao Wang, Zhijie Chen, Huiqin Zhang, Kai Liu, Deep Jariwala, M. Benjamin Jungfleisch, Chitraleema Chakraborty, Andrew F. May, Michael A. McGuire, Branislav K. Nikolic, John Q. Xiao, and Mark J.H. Ku,
  ACS Appl. Mater. Interfaces 15, 3287 (2023).

• Giant spin Nernst effect in a two-dimensional antiferromagnet due to magnetoelastic coupling-induced gaps and interband transitions between magnon-like bands
  D.-Q. To, C. Y. Ameyaw, A. Suresh, S. Bhatt, M. J. H. Ku, M. B. Jungfleisch, J. Q. Xiao, J. M. O. Zide, B. K. Nikolic, M. F. Doty
  arXiv:2305.06020 (2023).

• Phonon-mediated strong coupling between a three-dimensional topological insulator and a two-dimensional antiferromagnetic material
  D. Quang To, Weipeng Wu, Subhash Bhatt, Yongchen Liu, Anderson Janotti, Joshua M. O. Zide, Mark J. H. Ku, John Q. Xiao, M. Benjamin Jungfleisch, Stephanie Law, and Matthew F. Doty
  Phys. Rev. Materials 7, 045201 (2023).

• Controllable tunability of a Chern number within the electronic-nuclear spin system in diamond
  Junghyun Lee, Keigo Arai, Huiliang Zhang, Mark J. H. Ku, and Ronald L. Walsworth,
  arXiv:2211.13438 (2022).

• Dressed-state control of effective dipolar interaction between strongly-coupled solid-state spins
  Junghyun Lee, Mamiko Tatsuta, Andrew Xu, Erik Bauch, Mark J. H. Ku, and Ronald. L. Walsworth,
  arXiv:2203.07610 (2022).

• Revealing room temperature ferromagnetism in exfoliated Fe5GeTe2 flakes with quantum magnetic imaging
  Hang Chen*, Shahidul Asif*, Matthew Whalen*, Jeyson Tamara-Isaza, Brennan Luetke, Yang Wang, Xinhao Wang, Saurabh Lamsal, Millicent Ayako, Andrew F. May, Michael A. McGuire, Chitraleema Chakraborty, John Q. Xiao, and Mark J.H. Ku,
  2D Mater. 9, 025017 (2022).

• High-precision mapping of diamond crystal strain using quantum interferometry
  Mason C. Marshall, Reza Ebadi, Connor Hart, Matthew J Turner, Mark J.H. Ku, David F. Phillips, and Ronald L. Walsworth,
  Phys. Rev. Applied 17, 024041 (2021). 

• Scanning X-ray Diffraction Microscopy for Diamond Quantum Sensing
  Mason C. Marshall, David F. Phillips, Matthew J. Turner, Mark J. H. Ku, Tao Zhou, Nazar Delegan, F. Joseph Heremans, Martin V. Holt, and Ronald L. Walsworth
  Phys. Rev. Applied 16, 054032 (2021). Selected for Editors' Suggestion.

• Directional detection of dark matter with diamond
  M.C. Marshall, M.J. Turner, M.J.H. Ku, D.F. Phillips, and R.L. Walsworth,
  Quantum Sci. Technol. 6, 024011 (2021).

• Methods to accelerate high-throughput screening of atomic qubit candidates in van der Waals materials
  R. Kuate Defo, H. Nguyen, M. J. H. Ku, and T. D. Rhone,
  J. Appl. Phys. 129, 225105 (2021).

• Robustness of quantized transport through edge states of finite length: Imaging current density in Floquet topological versus quantum spin and anomalous Hall insulators
  U. Bajpai, M.J.H. Ku, and B.K. Nikolic,
  Phys. Rev. Research 2, 033438 (2020).

• Imaging Viscous Flow of the Dirac Fluid in Graphene
  M.J.H. Ku*, T.X. Zhou*, Q. Li, Y.J. Shin, J.K. Shi, C. Burch, L.E. Anderson, A.T. Pierce, Y. Xie, A. Hamo, U. Vool, H. Zhang, F. Casola, T. Taniguchi, K. Watanabe, M.M. Fogler, P. Kim, A. Yacoby, and R.L. Walsworth,
  Nature 583, 537 (2020).

• Spin-Torque Oscillation in a Magnetic Insulator Probed by a Single-Spin Sensor
  H. Zhang*, M.J.H. Ku*, F. Casola, C.H.R. Du, T. van der Sar, M.C. Onbasli, C.A. Ross, Y. Tserkovnyak, A. Yacoby, and R.L. Walsworth,
  Phys. Rev. B 102, 024404 (2020).

(* indicate equal contribution)

The following are works at MIT/UBC in the field of quantum gases

• Cascade of Solitonic Excitations in a Superfluid Fermi Gas: From Planar Solitons to Vortex Rings and Lines
  M.J.H. Ku, B. Mukherjee, T. Yefsah, and M.W. Zwierlein,
  Phys. Rev. Lett. 116, 045304 (2016).

• Motion of a Solitonic Vortex in the BEC-BCS Crossover
  M.J.H. Ku, W. Ji, B. Mukherjee, E. Guardado-Sanchez, L.W. Cheuk, T. Yefsah, and M.W. Zwierlein,
  Phys. Rev. Lett. 113, 065301 (2014).

• Heavy Solitons in a Fermionic Superfluid
  T. Yefsah, A.T. Sommer, M.J.H. Ku, L.W. Cheuk, W. Ji, W.S. Bakr, and M.W. Zwierlein,
  Nature 499, 426 (2013).

• Collective Modes in a Unitary Fermi Gas across the Superfluid Phase Transition”
  M.K. Tey, L.A. Sidorenkov, E.R. Sánchez Guajardo, R. Grimm, M.J.H. Ku, M.W. Zwierlein, Y.-H. Hou, L. Pitaevskii, and S. Stringari,
  Phys. Rev. Lett. 110, 055303 (2013).

• Strongly interacting Fermi gases
  W. Bakr, L.W. Cheuk, M.J.H. Ku, J.W. Park, A.T. Sommer, S. Will, C.-H. Wu, T. Yefsah and M.W. Zwierlein,
  EPJ Web of Conferences 57, 01002 (2013).

• Revealing the Superfluid Lambda Transition in the Universal Thermodynamics of a Unitary Fermi Gas
  M.J.H. Ku, A.T. Sommer, L.W. Cheuk, and M.W. Zwierlein,
  Science 335, 563 (2012).

• Feynman Diagrams versus Fermi-Gas Feynman Emulator
  K. Van Houcke, F. Werner, E. Kozik, N. Prokof’ev, B. Svistunov, M.J.H. Ku, A.T. Sommer, L.W. Cheuk, A. Schirotzek, and M.W. Zwierlein,
  Nature Physics 8, 366 (2012).

• Evolution of Fermion Pairing from Three to Two Dimensions
  A.T. Sommer, L.W. Cheuk, M.J.H. Ku, W.S. Bakr, and M.W. Zwierlein,
  Phys. Rev. Lett. 108, 045302 (2012).

• Universal Spin Transport in a Strongly Interacting Fermi Gas
  A. Sommer, M. Ku, G. Roati, and M.W. Zwierlein,
  Nature 472, 201 (2011).

• Spin Transport in Polaronic and Superfluid Fermi Gases
  A. Sommer, M. Ku, and M.W. Zwierlein,
  New J. Phys. 13, 055009 (2011).

• Finite-Size and Confinement Effects in Spin-Polarized Trapped Fermi Gases
  M. Ku, J. Braun and A. Schwenk,
  Phys. Rev. Lett. 102, 255301 (2009).