Title | Finite-temperature spectroscopy of dirty helical Luttinger liquids |
Publication Type | Journal Article |
Year of Publication | 2020 |
Authors | T-C. Hsieh, Y-Z. Chou, and L. Radzihovsky |
Journal | Phys. Rev. B |
Volume | 102 |
Pagination | 085152 |
Date Published | AUG 27 |
Type of Article | Article |
ISSN | 2469-9950 |
Abstract | We develop a theory of finite-temperature momentum-resolved tunneling spectroscopy (MRTS) for disordered, interacting, two-dimensional, topological-insulator edges. The MRTS complements conventional electrical transport measurement in characterizing the properties of the helical Luttinger liquid edges. Using the standard bosonization technique, we study low-energy spectral function and the MRTS tunneling current, providing a detailed description controlled by disorder, interaction, and temperature, taking into account Rashba spin-orbit coupling, interedge interaction, and distinct edge velocities. Our theory provides a systematic description of the spectroscopic signals in the MRTS measurement we hope will stimulate future experimental studies on the two-dimensional time-reversal invariant topological insulator. |
DOI | 10.1103/PhysRevB.102.085152 |