Gigantic Magnetochiral Anisotropy in the Topological Semimetal ZrTe5

Superconducting diode effect due to magnetochiral anisotropy in topological insulators and Rashba nanowires

“…Rectification is the phenomenon by which the resistance R due to a current I depends on the direction of current flow, in other words R(+I ) = R(−I ). When both inversion and timereversal symmetry are broken in a material or device, an effect known as magnetochiral anisotropy (MCA) can occur [1][2][3][4][5][6][7][8][9]. In the normal state of diffusive systems, for example, MCA of the energy spectrum can result in a correction to Ohm's law at second order in current, such that V = IR 0 (1 + γ BI ), with V the applied voltage, R 0 the reciprocal resistance, B the magnetic field strength, and γ the MCA rectification coefficient [4].…”

“…2469-9950/2022/106(10)/104501 (8) 104501-1 ©2022 American Physical Society Despite extensive efforts to achieve MBSs in Rashba nanowires, there has been no conclusive observation so far [27] and key ingredients, such as the size of the SOI energy (E so ) in the presence of the superconducting shell, the position of the chemical potential, or the values of the g factor, remain largely undetermined. In fact, it has been shown that coupling a Rashba nanowire to a superconductor can renormalize its properties away from the desirable parameter range such that, for instance, E so is reduced [44][45][46][47][48][49].…”

Superconductivity in single-crystalline ZrTe3−x (x ≤ 0.5) nanoplates

“…22 Massless Dirac fermions and negative magnetoresistance were observed in topological material candidate ZrTe 2 . 23–25 Although the topological nature of ZrTe 5 remains a puzzle, a number of interesting phenomena have been discovered in transport experiments, such as log-periodic oscillations, 26 the quantum Hall effect, 27 four-fold splitting of the non-zero Landau levels, 28 gigantic magneto-chiral anisotropy, 29 etc. Another fascinating composition is layered ZrTe 3 , which was known for decades as a CDW material.…”

Superconducting diode effect due to magnetochiral anisotropy in topological insulator and Rashba nanowires

“…Rectification is the phenomenon by which the resistance, R, due to a current, I, depends on the direction of current flow, in other words R(+I) = R(−I). When both inversion and time reversal symmetry are broken in a material or device, an effect known as magnetochiral anisotropy (MCA) can occur [1][2][3][4][5][6][7][8][9]. In the normal state of diffusive systems, for example, MCA of the energy spectrum can result in a correction to Ohm's law at second order in current, such that V = IR 0 (1 + γBI), with V the applied voltage, R 0 the reciprocal resistance, B the magnetic field strength, and γ the MCA rectification coefficient [4].…”