243 citations · 1.4k across the 39 of their papers we have counts for
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Accelerated Discovery of Topological Conductors for Nanoscale Interconnects
Alexander C. Tyner, William Rogers, Po-Hsin Shih +5
The sharp increase in resistivity of copper interconnects at ultra-scaled dimensions threatens the continued miniaturization of integrated circuits. Topological semimetals (TSMs) w…
Real Space Characterization of Nonlinear Hall Effect in Confined Directions
Sheng Luo, Chuang-Han Hsu, Guoqing Chang +3
The nonlinear Hall effect (NLHE) is a phenomenon which could produce a transverse Hall voltage in a time-reversal-invariant material. Here, we report the real space characterizatio…
Deterministic Spin-Orbit Torque Switching of Mn3Sn with the Interplay between Spin Polarization and Kagome Plane
Zhengde Xu, Xue Zhang, Yixiao Qiao +3
Previous studies have demonstrated spin-orbit torque (SOT) switching of Mn3Sn where the spin polarization lies in the kagome plane (configuration I). However, the critical current…
Efficient domain wall motion driven by the out-of-plane spin polarization
Jingwei Long, Yumeng Yang, Shuyuan Shi +3
Fast domain wall motion in systems with perpendicular magnetization is necessary for many novel applications such as the racetrack memory, domain wall logic devices and artificial…
Spatially Nonuniform Oscillations in Ferrimagnets Based on an Atomistic Model
Xue Zhang, Baofang Cai, Jie Ren +5
The ferrimagnets, such as GdxFeCo(1-x), can produce ultrafast magnetic switching and oscillation due to the strong exchange field. The two-sublattices macrospin model has been wide…
Surface-dominated conductance scaling in Weyl semimetal NbAs
Sushant Kumar, Yi-Hsin Tu, Luo Sheng +6
Protected surface states arising from non-trivial bandstructure topology in semimetals can potentially enable new device functionalities in compute, memory, interconnect, sensing,…
Unconventional Resistivity Scaling in Topological Semimetal CoSi
Shang-Wei Lien, Ion Garate, Utkarsh Bajpai +9
Nontrivial band topologies in semimetals lead to robust surface states that can contribute dominantly to the total conduction. This may result in reduced resistivity with decreasin…
Topological Semimetals for Scaled Back-End-Of-Line Interconnect Beyond Cu
Ching-Tzu Chen, Utkarsh Bajpai, Nicholas A. Lanzillo +3
The resistance bottleneck in metal-interconnect scaling calls for new interconnect materials. This paper explores topological semimetals as a potential solution. After reviewing th…
Electrical generation and detection of terahertz signal based on spin-wave emission from ferrimagnets
Zhifeng Zhu, Kaiming Cai, Jiefang Deng +4
Terahertz (THz) signals, mainly generated by photonic or electronic approaches, are being sought for various applications, whereas the development of magnetic source might be a nec…
Spin-wave mediated interactions for Majority Computation using Skyrmions and Spin-torque Nano-oscillators
Venkata Pavan Kumar Miriyala, Zhifeng Zhu, Gengchiau Liang +1
Recent progress in all-electrical nucleation, detection and manipulation of magnetic skyrmions has unlocked the tremendous potential of skyrmion-based spintronic devices. Here, we…
Electric-field-induced Three-terminal pMTJ Switching in the absence of an External Magnetic Field
Jiefang Deng, Xuanyao Fong, Gengchiau Liang
Since it is undesirable to require an external magnetic field for on-chip memory applications, we investigate the use of a Rashba effective field alternatively for assisting the el…
Ultrafast and low-energy switching in voltage-controlled elliptical pMTJ
Jiefang Deng, Gengchiau Liang, Gaurav Gupta
Switching magnetization in a perpendicular magnetic tunnel junction (pMTJ) via voltage controlled magnetic anisotropy (VCMA) has shown the potential to markedly reduce the switchin…
Electrically tunable valley polarization in Weyl semimetals with tilted energy dispersion
Can Yesilyurt, Zhuo Bin Siu, Seng Ghee Tan +3
Tunneling transport across the p-n-p junction of Weyl semimetal with tilted energy dispersion is investigated. We report that the electrons around different valleys experience oppo…
Conductance modulation in Weyl semimetals with tilted energy dispersion without a band gap
Can Yesilyurt, Seng Ghee Tan, Gengchiau Liang +1
We investigate the tunneling conductance of Weyl semimetal with tilted energy dispersion by considering electron transmission through a p-n-p junction with one-dimensional electric…
Switching based Spin Transfer Torque Oscillator with zero-bias field and large tuning-ratio
Gaurav Gupta, Zhifeng Zhu, Gengchiau Liang
We propose a novel concept of obtaining oscillations with frequencies in very-high frequency (VHF) and ultra-high frequency (UHF) bands. A traditional spin torque nano-oscillator (…
Anomalous tunneling characteristic of Weyl semimetals with tilted energy dispersion
Can Yesilyurt, Seng Ghee Tan, Gengchiau Liang +2
Weyl semimetal is a recently discovered state of quantum matter, which generally possesses tilted energy dispersion. Here, we investigate the electron tunneling through a Weyl semi…
Klein tunneling in Weyl semimetals under the influence of magnetic field
Can Yesilyurt, Seng Ghee Tan, Gengchiau Liang +1
Klein tunneling refers to the absence of normal backscattering of electrons even under the case of high potential barriers. At the barrier interface, the perfect matching of electr…
Perfect valley filter in strained graphene with single barrier region
Can Yesilyurt, Seng Ghee Tan, Gengchiau Liang +1
We present a single barrier system to generate pure valley-polarized current in monolayer graphene. A uniaxial strain is applied within the barrier region, which is delineated by l…
Efficient Dual Spin-Valley Filter In Strained Silicene
Can Yesilyurt, Seng Ghee Tan, Gengchiau Liang +1
We propose a highly efficient silicene device for dual spin and valley filtering. The device consists of two different barrier regions: the first is a region under uniaxial strain,…
High magnetoresistance at room temperature in p-i-n graphene nanoribbons due to band-to-band tunneling effects
Gengchiau Liang, S. Bala kumar, M. B. A. Jalil +1
A large magnetoresistance effect is obtained at room-temperature by using p-i-n armchair-graphene-nanoribbon (GNR) heterostructures. The key advantage is the virtual elimination of…
Time-dependent quantum transport and power-law decay of the transient current in a nano-relay and nano-oscillator
Eduardo C. Cuansing, Gengchiau Liang
Time-dependent nonequilibrium Green's functions are used to study electron transport properties in a device consisting of two linear chain leads and a time-dependent interleads cou…
Ambipolar bistable switching effect of graphene
Young Jun Shin, Jae Hyun Kwon, Gopinadhan Kalon +4
Reproducible current hysteresis is observed in graphene with a back gate structure in a two-terminal configuration. By applying a back gate bias to tune the Fermi level, an opposit…
Tunneling characteristics of graphene
Young Jun Shin, Gopinadhan Kalon, Jaesung Son +5
Negative differential conductance and tunneling characteristics of two-terminal graphene devices are observed before and after electric breakdown, respectively. The former is cause…
Conductance modulation in graphene nanoribbon under transver-se asymmetric electric potential
S. Bala Kumar, T. Fujita, Gengchiau Liang
We theoretically study the effect of transverse electric potentials on the transport properties of armchair graphene nanoribbons (AGNRs), formed by pairs of asymme-tric gates place…