75 citations · 439 across the 23 of their papers we have counts for
23 papers
Helical magnetic state in the vicinity of the pressure-induced superconducting phase in MnP
S. E. Dissanayake, M. Matsuda, K. Yoshimi +10
MnP is a metal that shows successive magnetic transitions from paramagnetic to ferromagnetic and helical magnetic phases at ambient pressure with decreasing temperature. With appli…
Realization of two-sublattice exchange physics in the triangular lattice compound Ba3Er(BO3)3
Matthew Ennis, Rabindranath Bag, Chunxiao Liu +4
We have synthesized high-quality single crystal samples of the erbium-based triangular lattice compound Ba3Er(BO3)3. Thermal and magnetic measurements reveal large anisotropy and a…
Observation of Conventional Near Room Temperature Superconductivity in Carbonaceous Sulfur Hydride
Hiranya Pasan, Elliot Snider, Sasanka Munasinghe +21
The phenomenon of high temperature superconductivity, approaching room temperature, has been realized in a number of hydrogen-dominant alloy systems under high pressure conditions1…
Beyond Single Tetrahedron Physics of Breathing Pyrochlore Compound Ba3Yb2Zn5O11
Rabindranath Bag, Sachith E. Dissanayake, Han Yan +11
Recently a new class of quantum magnets, the so-called breathing pyrochlore spin systems, have attracted much attention due to their potential to host exotic emergent phenomena. He…
Pressure induced 3D strain in 2D Graphene
Nathan Dasenbrock-Gammon, Sachith Dissanayake, Ranga Dias
Two-dimensional (2D) materials such as graphene offer a variety of outstanding properties for a wide range of applications. Their transport properties in particular present a rich…
Second harmonic AC calorimetry technique within a diamond anvil cell
Nathan Dasenbrock-Gammon, Raymond McBride, Gyeongjae Yoo +2
Tuning the energy density of matter at high pressures gives rise to exotic and often unprecedented properties, e.g., structural transitions, insulator-metal transitions, valence fl…
Pressure dependence of the magnetic ground state in CePtSi2
S. E. Dissanayake, F. Ye, W. Tian +7
CePtSi2 was reported to exhibit an antiferromagnetic order below T*=1.8 K at ambient pressure, a valence state change at ~1.2 GPa, and superconductivity in the range between 1.4 an…
Realization of Quantum Dipoles in Triangular Lattice Crystal Ba3Yb(BO3)3
Rabindranath Bag, Matthew Ennis, Chunxiao Liu +5
We investigate the thermodynamic properties of the ytterbium-based triangular lattice compound Ba3Yb(BO3)3. The results demonstrate the absence of any long-range ordering down to 5…
Towards understanding the magnetic properties of the breathing pyrochlore compound Ba3Yb2Zn5O11: A single crystal study
Sachith Dissanayake, Zhenzhong Shi, Jeffrey G. Rau +10
Ba3Yb2Zn5O11 is unique among breathing pyrochlore compounds for being in the nearly decoupled limit where inter-tetrahedron interactions are weak, hosting isolated clusters or "mol…
Phase diagram of the Shastry-Sutherland Compound SrCu2(BO3)2 under extreme combined conditions of field and pressure
Zhenzhong Shi, Sachith Dissanayake, Philippe Corboz +7
Motivated by the intriguing properties of the Shastry-Sutherland compound SrCu2(BO3)2 under pressure, with a still debated intermediate plaquette phase appearing at around 20 kbar…
Phase Diagram of YbZnGaO4 in Applied Magnetic Field
William Steinhardt, P. A. Maksimov, Sachith Dissanayake +11
Recently, Yb-based triangular lattice antiferromagnets have garnered significant interest as possible quantum spin liquid candidates. One example is YbMgGaO4, which showed many pro…
Formation of short-range magnetic order and avoided ferromagnetic quantum criticality in pressurized LaCrGe
Elena Gati, John M. Wilde, Rustem Khasanov +11
LaCrGe has attracted attention as a paradigm example of the avoidance of ferromagnetic (FM) quantum criticality in an itinerant magnet. By combining thermodynamic, transport, x…
Evidence for pressure induced unconventional quantum criticality in the coupled spin ladder antiferromagnet CHNCuBr
Tao Hong, Tao Ying, Qing Huang +15
Quantum phase transitions in quantum matter occur at zero temperature between distinct ground states by tuning a nonthermal control parameter. Often, they can be accurately describ…
Incommensurate two-dimensional checkerboard charge density wave in the low dimensional superconductor Ta4Pd3Te16
Zhenzhong Shi, S. J. Kuhn, F. Flicker +9
We report the observation of a two-dimensional (2D) checkerboard charge density wave (CDW) in the low-dimensional superconductor Ta4Pd3Te16. By determining its CDW properties acros…
Frustrated magnetic interactions in an S=3/2 bilayer honeycomb lattice compound Bi3Mn4O12(NO3)
M. Matsuda, S. E. Dissanayake, D. L. Abernathy +4
Inelastic neutron scattering study has been performed in an S=3/2 bilayer honeycomb lattice compound Bi3Mn4O12(NO3) at ambient and high magnetic fields. Relatively broad and monoto…
Charge density wave with anomalous temperature dependence in UPt2Si2
Jooseop Lee, Karel Prokes, Sohee Park +11
Using single crystal neutron and x-ray diffraction, we discovered a charge density wave (CDW) below 320 K, which accounts for the long-sought origin of the heat capacity and resist…
Constraining the Parameter Space of a Quantum Spin Liquid Candidate in Applied Field with Iterative Optimization
William M. Steinhardt, Zhenzhong Shi, Anjana Samarakoon +7
The quantum spin liquid (QSL) state is an exotic state of matter featuring a high degree of entanglement and lack of long-range magnetic order in the zero-temperature limit. The tr…
Appearance of T phase across the T-1T phase boundary in Weyl semimetal MoTe
Yu Tao, John A. Schneeloch, Chunruo Duan +6
Using elastic neutron scattering on single crystals of MoTe and MoWTe (), the temperature dependence of the recently discovered T$_{d}^{*…
Direct observation of the Higgs amplitude mode in a two-dimensional quantum antiferromagnet near the quantum critical point
Tao Hong, Masashige Matsumoto, Yiming Qiu +12
Spontaneous symmetry-breaking quantum phase transitions play an essential role in condensed matter physics. The collective excitations in the broken-symmetry phase near the quantum…
Successive field-induced transitions in BiFeO around room temperature
Shiro Kawachi, Atsushi Miyake, Toshimitsu Ito +8
The effects of high magnetic fields applied perpendicular to the spontaneous ferroelectric polarization on single crystals of BiFeO were investigated through magnetization, mag…
Pressure dependence of the magnetic ground states in MnP
M. Matsuda, F. Ye, S. E. Dissanayake +11
MnP, a superconductor under pressure, exhibits a ferromagnetic order below TC~290 K followed by a helical order with the spins lying in the ab plane and the helical rotation propag…
Spin Jam: a quantum-fluctuation-induced glassy state of a frustrated magnet
Junjie Yang, Anjana Samarakoon, Sachith Dissanayake +8
Since the discovery of spin glasses in dilute magnetic systems, their study has been largely focused on understanding randomness and defects as the driving mechanism. The same para…
Magnetic field-induced instability of the cooperative paramagnetic state in ZnCo(OD)Cl
S. E. Dissanayake, C. Chan, S. Ji +9
Using elastic and inelastic neutron scattering techniques with and without application of an external magnetic field , the magnetic ground states of ZnCo(OD)Cl$_…