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Tunable wavevector filtering in borophane based normal metal-barrier-normal metal junctions
Prasun Das1, Sangita De Sarkar2, Asim Kumar Ghosh1
1Department of Physics, Jadavpur University, 188 Raja Subodh Chandra Mallick Road, Kolkata 700032, India.
Researchers investigated electron transport in monolayer borophane, finding a tunable transmission gap. This discovery enables the development of novel borophane-based nano-electronic devices and tunable wavevector filters.
Area of Science:
- Condensed Matter Physics
- Materials Science
Background:
- Monolayer borophane exhibits unique Dirac electron properties.
- Understanding electron transport is crucial for novel electronic devices.
Purpose of the Study:
- To analyze Dirac electron transport across a normal metal-barrier-normal metal interface in monolayer borophane.
- To investigate the influence of barrier width, incident energy, and transverse momentum on transmission probability and conductance.
Main Methods:
- Theoretical analysis of transmission probability.
- Calculation of ballistic tunneling conductance.
- Examination of propagating and evanescent modes within the barrier.
Main Results:
- A tunable transmission gap was identified in the spectrum.
- Conductance behavior (oscillatory or decaying) depends on propagating/evanescent modes, controlled by energy and barrier strength.
- A minimum in conductance occurs when incident energy matches barrier height due to evanescent modes.
Conclusions:
- Monolayer borophane can host a tunable wavevector filter.
- Findings have potential applications in borophane-based nano-electronic devices.
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