Publication List

(*contributed equally)

S. Budaraju, S. Feng, J. Willsher, J. Knolle, F. Pollmann, B. Federico

Emergence of a monopole phase in the J1-J2 Heisenberg model on the triangular lattice for small magnetic fields

arXiv:2607.14766 (2026)

S. Feng, N. Trivedi

Magnetic field induced phenomena in Kitaev spin liquids

arxiv:2601.14496 (2026)

T. Bader, S. Feng, S. Budaraju, B. Federico, J. Knolle, F. Pollmann

Triangular J1-J2 Heisenberg antiferromagnet in a magnetic field

Phys. Rev. B 113, L241114 (2026) [arxiv:2512.08768]

D. Kong, S. Feng, J. Xie, Y. N. Wu

FFT-accelerated auxiliary variable MCMC for fermionic lattice models: a determinant-free approach with O(N logN) complexity

arXiv:2510.13866 (2025)

S. Feng, P. Zhu, J. Knolle, M. Knap

Transient localization from fractionalization: vanishingly small energy conductivity in gapless quantum magnets

arxiv:2509.07062 (2025)

P. Belbase, A. Unnikrishnan, S. Feng, E. S. Choi, J. Knolle, A. Banerjee

Finite spinon density-of-states in triangular-lattice delafossite TlYbSe2

arxiv:2504.05436 (2025)

P. Zhu, S. Feng, Y.-M. Lu

Obstruction to broken symmetries in topological flat bands

Physical Review B 111, L161411 (2025) [arxiv:2408.14533]

P. Zhu*, S. Feng*, K. Wang*, T. Xiang, N. Trivedi

Emergent quantum Majorana metal from a chiral quantum spin liquid

Nature Communications 16, 2420 (2025) [arxiv:2405.12278]

K. Wang*, S. Feng*, P. Zhu, R. Chi, H.-J Liao, N. Trivedi, T. Xiang

Fractionalization signatures in the dynamics of quantum spin liquids

Physical Review B 111, L100402 (2025, Editor's Suggestion) [arxiv:2403.12141]

I. Lee, J. Cen, O. Molchanov, S. Feng, W. L. Huey, J. V. Tol, J. E. Goldberger, N. Trivedi, H.-Y. Kee, P. C. Hammel

Spin-orbit coupling controlled two-dimensional magnetism in chromium trihalides

Physical Review B 113, 014401 (2026) [arxiv:2405.16709]

S. Feng

Hidden subsystem symmetry protected states in competing topological orders

Physical Review B 109, 075151 (2024) [arxiv:2309.02307]

S. Feng, A. Agarwala, N. Trivedi

Dimensional reduction of Kitaev spin liquid at quantum criticality

Physical Review Research. 6, 013298 (2024) [arxiv:2308.08116]

K. Zhang, S. Feng, Y. D. Lensky, N. Trivedi, E. A. Kim

Machine learning reveals features of spinon Fermi surface

Communication Physics 7, 54 (2024) [arxiv:2306.03143]

S. Feng, D. Kong, N. Trivedi

A statistical approach to topological entanglement: Boltzmann machine representation of higher-order irreducible correlation

arXiv:2302.03212 (2023)

S. Feng, A. Agarwala, S. Bhattacharjee, N. Trivedi

Anyon dynamics in field-driven phases of the anisotropic Kitaev model

Physical Review B 108, 035149 (2023) [arxiv:2206.12990]

S. Feng, Y. He, N. Trivedi

Detection of long-range entanglement in gapped quantum spin liquids by local measurements

Physical Review A 106, 042417 (2022) [arxiv:2206.07237]

S. Feng, G. Alvarez, N. Trivedi

Gapless to gapless phase transitions in quantum spin chains

Physical Review B 105, 014435 (2022) [arxiv:2012.00700]

S. Feng, N. D. Patel, P. Kim, J. H. Han, N. Trivedi

Magnetic phase transitions in quantum spin-orbital liquids

Physical Review B 101, 155112 (2020) [arxiv:1912.09516]

T. Xiao, J. Wang, S. Yang, Y. Zhu, D. Li, Z. Wang, S. Feng, L. Bu, X. Zhan, G. Lu

Film-depth-dependent crystallinity for light transmission and charge transport in semitransparent organic solar cells

Journal of Materials Chemistry, A, 2020, 8, 401 (2020)

D. Li, S. Li, W. Lu, S. Feng, P. Wei, Y. Hu, X. Wang, G. Lu

Rapidly measuring charge carrier mobility of organic semiconductor films upon a point-contact four-probes Method

IEEE Journal of the Electron Devices Society 7, 303-308 (2019)

L. Bu, S. Gao, W. Wang, L. Zhou, S. Feng, X. Chen, D. Yu, S. Li, G. Lu

Film-depth-dependent light absorption and charge transport for polymer electronics: A Case Study on Semiconductor/Insulator Blends by Plasma Etching

Advanced Electronic Materials 2, 1600359 (2016)

Quantum Spin Liquids

Beyond solids, liquids and gas, there are numerous quantum phases of mater which lie beyond classic symmetry-breaking paradigm. Quantum spin liquids (QSLs) being among them. QSLs are exotic phases of matter that can show up in some frustrated magnetic (or qubit) systems characterized by a lack of long-range magnetic order down to extremely low temperatures (unlike with conventional magnets) due to strong quantum fluctuations.

qsl figure
Geometrically frustrated spins on a triangular lattice

In addition to this negative definition, QSLs are also characterized by some global invariant, known as topological entanglement, emergent abelian or non-abelian quasi-particles with fractionalized statistics, and ground state degeneracy connected with emergent gauge theories.

Degenercy on Torus
QSLs on 2D lattice can have distinct topologically invariant states of different gauge-equivalent classes